开云体育

:

OK Hans, ain't that something! Microwatt levels and still
detectable... I learned a lot about beacons from the KNIGHTS. Very
interesting propagation experiments. Plenty of new ideas for the
future! Nice software tools as well.
I downloaded ARGO a while a go but never installed and used it.
Should do that. It's a pity one has to go to the office each day. Too
few time left for the radiohobby:-)
Bye for now and do not bother for the Schnappie song Hans. If you are
lucky, it will skip the United Kingdom !

Ron

Hi Ron

100mW! These guys go down to 10uW levels sometimes! I think on 30m

when

condx are good, a very low power can get through. My beacon is

250mW and I

have had reports from ON and PA that when propagation permits, I am

easily

audible with a standard CW filter (i.e. not just "visible" on the

spectogram

display). But usually, ON an PA are too close. Just occasional

unusual condx

permit a short window to open up, which can close in a matter of

seconds.

Propagation effects are very interesting. If sunset is occuring

between the

two stations' QTH, a doppler effect is often visible on the signal,

it

splits in the spectrogram into two lines separated by a Hz or so.

This is

due to the rapid movement of the ionosphere at sunset.

I am not familiar with the Schnappie song, but I admit to not being

an

expert!

73 from nr London where we have some sunshine today

Hans G0UPL

-----Original Message-----
From: Ron [mailto:pa2rf@y...]
Sent: 14 February 2005 14:37
To: BITX20@...
Subject: [BITX20] Re: Recycling monitors




Nice website of the qrp beacon knights! Tnx for that. Nice picts.
Impressive what can be achieved with 100 mW. What do you guess

which

will be the minimum to work with CW on e.g. 30m ??
Compared with this milliwatt festival i do not think 70 qso's over
2days during a contest is a real achievement...

Has the Schnappie-song also invaded England?? (Schnappie das kleine
Krokodil)

Greetings from Holland
Ron
pa2rf

--- In BITX20@..., Hans Summers <Hans.Summers@t...>

wrote:

Hello Ron

Congrats on the Dutch contest. 70 QSO's is a lot (for me,

anyway!).

If you

are interested in low power QRSS beacons, there is a mailing list

you might

not be aware of. The QRSS Knights webpage is
and if you want to subscribe to

the mailing

list, send an email to on5ex@p... . Most activity is in Europe

but

there are also some experimenters in VK with regular reception

reports EU -

VK on 30m.

This weekend I looked at the monitor PCB some more and made a

complete list

of all the resistors and capacitors. You know, there are a huge

number of

components there. But certain parts of a receiver require very

specific

component values! That makes it a real challenge if one decides to

build the

rig from ONLY parts in the monitor.

73 Hans G0UPL

-----Original Message-----
From: Ron [mailto:pa2rf@y...]
Sent: 14 February 2005 07:23
To: BITX20@...
Subject: [BITX20] Re: Recycling monitors




Hi there Hans,
Nice story about the tuning cap. Your vfo looks fine. If CW goes

ok,

drift should be less than 100 Hz or so. Congratulations.
My components for the huf&puf circuitry arrived but i did not

touch

the soldering equipment this weekend. I decided to participate in

my

first HF contest the 50th Dutch PACC. This had nothing to do with

QRP

and homebrew equipment!. Made about 70 contacts with old Kenwood
transceiver from 1972 with tubes (plenty of pwr)...
The more I think of the beacon project, the more i like it.
How about a qrp 250mW TX on 18.0xy MHz calling CW using a PIC
generating the cw code...
Bye for now
ron

--- In BITX20@..., Hans Summers <Hans.Summers@t...>

wrote:

Hello Ron

My VFO uses just a simple 74LS04 inverter, and it's surprisingly

stable even

at 10MHz, after some warm-up time. Perfectly adequate for a CW

QSO.

The main

problem with it is that I did not gear the tuning knob, so the

tuning rate

is very fast! By the way, speaking of recycling - that tuning

capacitor came

out of a 1970's radio tuner which I dismantled. I found it at

the

rubbish

dump a year ago. I had a car full of garden waste which I was

dumping there.

I saw this thing on the ground next to the door where you pour

the

waste in.

The strangest thing happened! All by itself, it just jumped off

the

ground

and into the boot of my car!

All I know about the Tweenies and Teletubbies is that in both

cases, they

wear ridiculous suits in bright colours, have silly names, and

dance around

singing funny songs. My daughter is the expert ;-)

73 Hans G0UPL


-----Original Message-----
From: Ron [mailto:pa2rf@y...]
Sent: 11 February 2005 07:20
To: BITX20@...
Subject: [BITX20] Re: Recycling monitors




Good morning OM
Nice 30m rx Hans!
Similar to the dc rx i built, altough i used an old so41p (which

are

not produced anymore). And i have used to x-tals for the

oscillator

instead of a free vfo. Ordered them from Funk Amateur a magazin

in

Germany. The complete trscvr is in an old CD-player housing now.

With

a nice Aluminium plate on the front, it looks brand-new (Where

did

you buy that ...) Sometimes there is some broadcast breaktrough

but

not often. I discovered that around 11 o-clock in the morning

and 4

o-clock in

the

afternoon i get the best results. Stations seems to be around

the

corner. I worked with 5 watt station from Poland which was

awfully

loud. If condx are there it is a great band.
During evening the band seems dead last couple of weeks. I think

G -

PA is too short distance for 30m but we can try if you like. I

only

have 10,108 and 10,118 on cw available...OK, i asked my son

about

Tweenies. He said they are similar to the Tubbies and further

refused

to talk about it :-((
He is into Yu-kiyo, Spongebob Squarepants and The Karate Kid

these

days... bye
ron

--- In BITX20@..., Hans Summers <Hans.Summers@t...>

wrote:

Hi Ron

I like 30m too. One of my other projects is a miniature CW

transceiver for

30m. Nice job on the 30m rig, I hadn't seen that on your site

before, I

think it is newer than when I previously visited. I have a 30m

direct

conversion receiver see

<> but it

suffers

from plenty

of broadcast breakthrough. Nevertheless I had some nice QSO's

on

it

including my first Italian station. Perhaps when I am next

able

to

get my

station QRV again on 30m we can try a QSO! PA might be a

little

too

close

for 30m though, except under unusual band condx.

Hmm so you have teletubbies too. My daughter loves them.

She's 2

on

1st

April. Only problem is, she gets very angry when the programme

finishes and

blames it on me. What does she want me to do? Telephone the

BBC

and

ask them

to play it again? Ah well, guess I shouldn't have dismantled

the

video

recorder ;-)

73 Hans G0UPL

> .

_____





_____

Do you Yahoo!?
Yahoo! Search presents - Jib

<

ure/ji

bjabinaugural.html> Jab's 'Second Term'

*** eSafe detected hostile content in this email and removed

it.

***

&#92;HTML Active Content: Objects Removed: 2 - Invalid IMG Tag






_____

Do you Yahoo!?
Yahoo! Search presents - Jib

<

ure/ji

bjabinaugural.html> Jab's 'Second Term'

Yahoo! Groups Sponsor

ADVERTISEMENT

<

6/D=gr

oups/S=1705063108:HM/EXP=1108130267/A=2532114/R=2/SIG=12kg7r4ig/*http:

//clk.

atdmt.com/NFX/go/yhxxxnfx0020000014nfx/direct/01/&time=110804386715136

4>

_____

Yahoo! Groups Links


* To visit your group on the web, go to:

<>


* To unsubscribe from this group, send an email to:
BITX20-unsubscribe@...
<mailto:BITX20-unsubscribe@...?

subject=Unsubscribe>

* Your use of Yahoo! Groups is subject to the Yahoo!

Terms of

Service

<> .



*** eSafe detected hostile content in this email and removed

it.

***

&#92;HTML Active Content: Objects Removed: 2 - Invalid IMG Tag

Yahoo! Groups Links

Yahoo! Groups Links

Yahoo! Groups Links

OK tomorrow 17feb05, 4 o-clock local i'll be qrv at 10.118 with cw.
I will look for your signals and give cq to you as well. I have a
limited tuning range of about 400 Hz around 10.118 centre frequency.
I will use cwget and cwtype on my pc. if your signals come tru i can
make a copy/paste action and show you the received message by e-mail
as well.
Hope we will meet by radio!
ciao
Ron

--- In BITX20@..., "I0SKK - Alessandro Santucci"
<I0SKK@f...> wrote:

OK Ron,
well I propose next thursday at 4 o'clock,on 10.118. I'll call

slowly (use a

bug) adn we'll try condx. Hope to be able to make this...

Today it's raining and on mountains not so far fm Rome it's snowing

(my

daughetr called by phone happy for the snow, she's there!...), but

not wind!

Best 73 Ron, we'll meet on email next days!

Alex I0SKK





-----Messaggio originale-----
Da: Ron [mailto:pa2rf@y...]
Inviato: lunedì 14 febbraio 2005 9.54
A: BITX20@...
Oggetto: R: [BITX20] Re: Recycling monitors and 30m tests.....




Sure we can try to setup a qso Alessandro.
Would be great to make a scheduled qso on 10.108 or 10.118
But of course condx must be there. My experience is condx are best

in

the morning abt 11-12 o?lock and afternoon 4 o?lock.
By the way I used CWget and CWtype since I do not 'speak' morse...
next thursday, friday, saturday or sunday.
Mention a day and a time dr Alex and i will try to be there.
Ciao ciao from a windy Holland
ron pa2rf

--- In BITX20@..., "I0SKK - Alessandro Santucci"
<I0SKK@f...> wrote:

Hallo Ron,
I'm reading about your 30 m test and I'd like to join....
In this last period I'0m testing a simple but effective vert

antenna

(someone calls Rybakov....boh!), and I'm using 10 MHz quite often.

Yesterday

I had a good 2xqrp qso with a DJ station so I'd like to try a

2xqrp

qso with

you, from PA. Moreover I'm looking for a 2xqrp DXCC challenge so I

need PA

qso and it would be good to be able to make this qso.On yor two

frequencies

I've quite free band so is possible to try both, maybe the 10.118

could be

better without DX calls. So if you are intersted we can tray, tell

me at

what time.
I use a K2 Elecraft and this 7.5 m vertical on my roof.

Anyway have my best 73's and thanks for reading about your very

intersting

tests. Apart in past (and now also...) I used to do the same as

Hans,

getting all I found on the street, by old TV equipments...., but

today I've

too much in my house.....(by the way the power supply I still use,

with 2.5

A out, has a transformer got on and old TV on my street.....hi!).

Regards Ron



73 Alex I0SKK



--
Internal Virus Database is out-of-date.
Checked by AVG Anti-Virus.
Version: 7.0.300 / Virus Database: 265.8.6 - Release Date:

07/02/05

Yahoo! Groups Links







--
Internal Virus Database is out-of-date.
Checked by AVG Anti-Virus.
Version: 7.0.300 / Virus Database: 265.8.6 - Release Date: 07/02/05

--
Internal Virus Database is out-of-date.
Checked by AVG Anti-Virus.
Version: 7.0.300 / Virus Database: 265.8.6 - Release Date: 07/02/05

Hi Ron

100mW! These guys go down to 10uW levels sometimes! I think on 30m when
condx are good, a very low power can get through. My beacon is 250mW and I
have had reports from ON and PA that when propagation permits, I am easily
audible with a standard CW filter (i.e. not just "visible" on the spectogram
display). But usually, ON an PA are too close. Just occasional unusual condx
permit a short window to open up, which can close in a matter of seconds.
Propagation effects are very interesting. If sunset is occuring between the
two stations' QTH, a doppler effect is often visible on the signal, it
splits in the spectrogram into two lines separated by a Hz or so. This is
due to the rapid movement of the ionosphere at sunset.

I am not familiar with the Schnappie song, but I admit to not being an
expert!

73 from nr London where we have some sunshine today

Hans G0UPL

Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the BITX20
group.

File : /4.1 Mhz VFO/bitx-vfo screen shots2.pdf
Uploaded by : ad5jo <dwarden2@...>
Description : Spectrum analyzer and o-scope shots

You can access this file at the URL:


To learn more about file sharing for your group, please visit:


Regards,

ad5jo <dwarden2@...>

Hi Chris,

- The schema of the "VXO" I use for 24MHz is in the photobox. As you
can see I didn't use an inductive in serie with the crystals. The
shift is 4 KHz. That is enough for the PSK frequency. For CW I want
more shift. Can you give me some advice about the inductive?

- You were right about the impedance and shape of the filter changing
when I put the crystalfilter in the RX. I made a new shape picture
with the noise source on the antenna and the filter in the RX. The
best shape I got was with 100 pF on both ends but still 0 pF in the
middle of the filter. (See schema and screen picture in the picture
box). I do not understand this.

73,

Ruud
PE2BS

--- In BITX20@..., "vdberghak" <vdberghak@z...> wrote:

Hi Ruud,
there is something wrong with your VXO. With a 13 MHz VXO that I

and

an other ham use, a frequency shift of about 60 kHz can be reached!
I think you can only shift so less because you do have the VXO
directly on 24 MHz. Because that is an overtone x-tal, it will not
work as a VXO. What you can do is make the VXO with that x-tal on 8
MHz, then tripling it. Likely you will have then more then hundred
KHz shift possibility.
Good luck,
Chris.

- The oscilator in my BITX20 will (if possible) be a VXO on

24MHz.

The reason for this is simple: lots of cristals in the junkbox

and

a

good supression of the signal by the Pi-filter. I can vary tot 5

kHz

when I use three crystals. But the frequency of the oscilator

also

goes about 5 Kc up when a crystal is added!
The VXO is not ready yet. I still have to work for enough output

for

the balance mixer.

Press Release

At the initiative of VU2IIT (Ham Radio Club IIT Kanpur) a Hamfest
was organized from February 4 - 6.2005. at Kanpur IIT campus which
coincided with International Conference & Exposition on
Communications & Computing. During this event seminars and practical
workshop on Ham Radio communications and Foxhunt was held under the
leadership of OM Rahul Srivastava VU3WJM.

VU2UKR OM Sunil UK (moderator and owner of CQ_VU groups and
www.cqindia.com ) VU3FUN OM Rajesh Bakshi (Owner of
www.indiahams.com portal) and OM Jyoti Chakravartty VU3BGI (Founder
and moderator of VUQRP Amature Radio Group) assisted OM Rahul VU3WJM
in various capacities.

Some of the highlights during this event was

The first VUQRP core group met together and several important
decisions were made TO Promote VUQRP group and qrp activities in
Indian subcontinent.

Lectures on Ham Radio Communications were well attended by the
students as well as few staffs.

a practical workshop and hands on event was also part of this
programme. Where low cost 25 PIXIE transreciver were assembled by
the participants in three hours suprisingly all 25 of them were
working.

Several participants took a keen interest to appear in the ASOC exam
to become Ham Radio operator. There are already several students who
have already appeared in the ASOC exam and waiting for the results.

Mr. Abhinav Agarwal Co ordinator VU2IIT did an excllent job in
arranging this event.

Photogaraphs of this event can be seen at various websites like
(please click section "I" at the top and go
to IIT Kanpur photos)

Also at the photo section of CQ_VU yahoo groups and VUQRP YAHOO
GROUP.




Jyoti P. Chakravartty VU3BGI
HANDEL - JOE

Nice website of the qrp beacon knights! Tnx for that. Nice picts.
Impressive what can be achieved with 100 mW. What do you guess which
will be the minimum to work with CW on e.g. 30m ??
Compared with this milliwatt festival i do not think 70 qso's over
2days during a contest is a real achievement...

Has the Schnappie-song also invaded England?? (Schnappie das kleine
Krokodil)

Greetings from Holland
Ron
pa2rf

--- In BITX20@..., Hans Summers <Hans.Summers@t...> wrote:

Hello Ron

Congrats on the Dutch contest. 70 QSO's is a lot (for me, anyway!).

If you

are interested in low power QRSS beacons, there is a mailing list

you might

not be aware of. The QRSS Knights webpage is
and if you want to subscribe to

the mailing

list, send an email to on5ex@p... . Most activity is in Europe but
there are also some experimenters in VK with regular reception

reports EU -

VK on 30m.

This weekend I looked at the monitor PCB some more and made a

complete list

of all the resistors and capacitors. You know, there are a huge

number of

components there. But certain parts of a receiver require very

specific

component values! That makes it a real challenge if one decides to

build the

rig from ONLY parts in the monitor.

73 Hans G0UPL

-----Original Message-----
From: Ron [mailto:pa2rf@y...]
Sent: 14 February 2005 07:23
To: BITX20@...
Subject: [BITX20] Re: Recycling monitors




Hi there Hans,
Nice story about the tuning cap. Your vfo looks fine. If CW goes

ok,

drift should be less than 100 Hz or so. Congratulations.
My components for the huf&puf circuitry arrived but i did not touch
the soldering equipment this weekend. I decided to participate in

my

first HF contest the 50th Dutch PACC. This had nothing to do with

QRP

and homebrew equipment!. Made about 70 contacts with old Kenwood
transceiver from 1972 with tubes (plenty of pwr)...
The more I think of the beacon project, the more i like it.
How about a qrp 250mW TX on 18.0xy MHz calling CW using a PIC
generating the cw code...
Bye for now
ron

--- In BITX20@..., Hans Summers <Hans.Summers@t...>

wrote:

Hello Ron

My VFO uses just a simple 74LS04 inverter, and it's surprisingly

stable even

at 10MHz, after some warm-up time. Perfectly adequate for a CW

QSO.

The main

problem with it is that I did not gear the tuning knob, so the

tuning rate

is very fast! By the way, speaking of recycling - that tuning

capacitor came

out of a 1970's radio tuner which I dismantled. I found it at the

rubbish

dump a year ago. I had a car full of garden waste which I was

dumping there.

I saw this thing on the ground next to the door where you pour the

waste in.

The strangest thing happened! All by itself, it just jumped off

the

ground

and into the boot of my car!

All I know about the Tweenies and Teletubbies is that in both

cases, they

wear ridiculous suits in bright colours, have silly names, and

dance around

singing funny songs. My daughter is the expert ;-)

73 Hans G0UPL


-----Original Message-----
From: Ron [mailto:pa2rf@y...]
Sent: 11 February 2005 07:20
To: BITX20@...
Subject: [BITX20] Re: Recycling monitors




Good morning OM
Nice 30m rx Hans!
Similar to the dc rx i built, altough i used an old so41p (which

are

not produced anymore). And i have used to x-tals for the

oscillator

instead of a free vfo. Ordered them from Funk Amateur a magazin

in

Germany. The complete trscvr is in an old CD-player housing now.

With

a nice Aluminium plate on the front, it looks brand-new (Where did
you buy that ...)
Sometimes there is some broadcast breaktrough but not often. I
discovered that around 11 o-clock in the morning and 4 o-clock in

the

afternoon i get the best results. Stations seems to be around the
corner. I worked with 5 watt station from Poland which was

awfully

loud. If condx are there it is a great band.
During evening the band seems dead last couple of weeks. I think

G -

PA is too short distance for 30m but we can try if you like. I

only

have 10,108 and 10,118 on cw available...OK, i asked my son about
Tweenies. He said they are similar to the Tubbies and further

refused

to talk about it :-((
He is into Yu-kiyo, Spongebob Squarepants and The Karate Kid these
days...
bye
ron

--- In BITX20@..., Hans Summers <Hans.Summers@t...>

wrote:

Hi Ron

I like 30m too. One of my other projects is a miniature CW

transceiver for

30m. Nice job on the 30m rig, I hadn't seen that on your site

before, I

think it is newer than when I previously visited. I have a 30m

direct

conversion receiver see

<> but it suffers

from plenty

of broadcast breakthrough. Nevertheless I had some nice QSO's on

it

including my first Italian station. Perhaps when I am next able

to

get my

station QRV again on 30m we can try a QSO! PA might be a little

too

close

for 30m though, except under unusual band condx.

Hmm so you have teletubbies too. My daughter loves them. She's 2

on

1st

April. Only problem is, she gets very angry when the programme

finishes and

blames it on me. What does she want me to do? Telephone the BBC

and

ask them

to play it again? Ah well, guess I shouldn't have dismantled the

video

recorder ;-)

73 Hans G0UPL

> .

_____





_____

Do you Yahoo!?
Yahoo! Search presents - Jib

<

ure/ji

bjabinaugural.html> Jab's 'Second Term'

*** eSafe detected hostile content in this email and removed it.

***

&#92;HTML Active Content: Objects Removed: 2 - Invalid IMG Tag






_____

Do you Yahoo!?
Yahoo! Search presents - Jib

<

ure/ji

bjabinaugural.html> Jab's 'Second Term'

Yahoo! Groups Sponsor

ADVERTISEMENT

<

6/D=gr

oups/S=1705063108:HM/EXP=1108130267/A=2532114/R=2/SIG=12kg7r4ig/*http:

//clk.

atdmt.com/NFX/go/yhxxxnfx0020000014nfx/direct/01/&time=110804386715136

4>

_____

Yahoo! Groups Links


* To visit your group on the web, go to:

<>


* To unsubscribe from this group, send an email to:
BITX20-unsubscribe@...
<mailto:BITX20-unsubscribe@...?subject=Unsubscribe>


* Your use of Yahoo! Groups is subject to the Yahoo! Terms of

Service

<> .



*** eSafe detected hostile content in this email and removed it.

***

&#92;HTML Active Content: Objects Removed: 2 - Invalid IMG Tag

Yahoo! Groups Links

Yahoo! Groups Links

Hello Ron

Congrats on the Dutch contest. 70 QSO's is a lot (for me, anyway!). If you
are interested in low power QRSS beacons, there is a mailing list you might
not be aware of. The QRSS Knights webpage is
and if you want to subscribe to the mailing
list, send an email to on5ex@... . Most activity is in Europe but
there are also some experimenters in VK with regular reception reports EU -
VK on 30m.

This weekend I looked at the monitor PCB some more and made a complete list
of all the resistors and capacitors. You know, there are a huge number of
components there. But certain parts of a receiver require very specific
component values! That makes it a real challenge if one decides to build the
rig from ONLY parts in the monitor.

73 Hans G0UPL

OK Alex,
Fine with me.ok 10.118 cw. I'll give some calls as well. I hope 4 o-
clock in Italy = 4 o-clock in Holland. I think so; its is 15:00 UTC...
I worked with I on 30m with a station near milano once. Snow in Rome
ain't that something. The only thing we have here is windforce 9 !!
SKED placed in agenda!!
Bye ron
PA2RF

--- In BITX20@..., "I0SKK - Alessandro Santucci"
<I0SKK@f...> wrote:

OK Ron,
well I propose next thursday at 4 o'clock,on 10.118. I'll call

slowly (use a

bug) adn we'll try condx. Hope to be able to make this...

Today it's raining and on mountains not so far fm Rome it's snowing

(my

daughetr called by phone happy for the snow, she's there!...), but

not wind!

Best 73 Ron, we'll meet on email next days!

Alex I0SKK





-----Messaggio originale-----
Da: Ron [mailto:pa2rf@y...]
Inviato: lunedì 14 febbraio 2005 9.54
A: BITX20@...
Oggetto: R: [BITX20] Re: Recycling monitors and 30m tests.....




Sure we can try to setup a qso Alessandro.
Would be great to make a scheduled qso on 10.108 or 10.118
But of course condx must be there. My experience is condx are best

in

the morning abt 11-12 o?lock and afternoon 4 o?lock.
By the way I used CWget and CWtype since I do not 'speak' morse...
next thursday, friday, saturday or sunday.
Mention a day and a time dr Alex and i will try to be there.
Ciao ciao from a windy Holland
ron pa2rf

--- In BITX20@..., "I0SKK - Alessandro Santucci"
<I0SKK@f...> wrote:

Hallo Ron,
I'm reading about your 30 m test and I'd like to join....
In this last period I'0m testing a simple but effective vert

antenna

(someone calls Rybakov....boh!), and I'm using 10 MHz quite often.

Yesterday

I had a good 2xqrp qso with a DJ station so I'd like to try a

2xqrp

qso with

you, from PA. Moreover I'm looking for a 2xqrp DXCC challenge so I

need PA

qso and it would be good to be able to make this qso.On yor two

frequencies

I've quite free band so is possible to try both, maybe the 10.118

could be

better without DX calls. So if you are intersted we can tray, tell

me at

what time.
I use a K2 Elecraft and this 7.5 m vertical on my roof.

Anyway have my best 73's and thanks for reading about your very

intersting

tests. Apart in past (and now also...) I used to do the same as

Hans,

getting all I found on the street, by old TV equipments...., but

today I've

too much in my house.....(by the way the power supply I still use,

with 2.5

A out, has a transformer got on and old TV on my street.....hi!).

Regards Ron



73 Alex I0SKK



--
Internal Virus Database is out-of-date.
Checked by AVG Anti-Virus.
Version: 7.0.300 / Virus Database: 265.8.6 - Release Date:

07/02/05

Yahoo! Groups Links







--
Internal Virus Database is out-of-date.
Checked by AVG Anti-Virus.
Version: 7.0.300 / Virus Database: 265.8.6 - Release Date: 07/02/05

--
Internal Virus Database is out-of-date.
Checked by AVG Anti-Virus.
Version: 7.0.300 / Virus Database: 265.8.6 - Release Date: 07/02/05

OK Ron,
well I propose next thursday at 4 o'clock,on 10.118. I'll call slowly (use a
bug) adn we'll try condx. Hope to be able to make this...

Today it's raining and on mountains not so far fm Rome it's snowing (my
daughetr called by phone happy for the snow, she's there!...), but not wind!

Best 73 Ron, we'll meet on email next days!

Alex I0SKK





-----Messaggio originale-----
Da: Ron [mailto:pa2rf@...]
Inviato: luned??? 14 febbraio 2005 9.54
A: BITX20@...
Oggetto: R: [BITX20] Re: Recycling monitors and 30m tests.....




Sure we can try to setup a qso Alessandro.
Would be great to make a scheduled qso on 10.108 or 10.118
But of course condx must be there. My experience is condx are best in
the morning abt 11-12 o???lock and afternoon 4 o???lock.
By the way I used CWget and CWtype since I do not 'speak' morse...
next thursday, friday, saturday or sunday.
Mention a day and a time dr Alex and i will try to be there.
Ciao ciao from a windy Holland
ron pa2rf

--- In BITX20@..., "I0SKK - Alessandro Santucci"
<I0SKK@f...> wrote:

Hallo Ron,
I'm reading about your 30 m test and I'd like to join....
In this last period I'0m testing a simple but effective vert antenna
(someone calls Rybakov....boh!), and I'm using 10 MHz quite often.

Yesterday

I had a good 2xqrp qso with a DJ station so I'd like to try a 2xqrp

qso with

you, from PA. Moreover I'm looking for a 2xqrp DXCC challenge so I

need PA

qso and it would be good to be able to make this qso.On yor two

frequencies

I've quite free band so is possible to try both, maybe the 10.118

could be

better without DX calls. So if you are intersted we can tray, tell

me at

what time.
I use a K2 Elecraft and this 7.5 m vertical on my roof.

Anyway have my best 73's and thanks for reading about your very

intersting

tests. Apart in past (and now also...) I used to do the same as

Hans,

getting all I found on the street, by old TV equipments...., but

today I've

too much in my house.....(by the way the power supply I still use,

with 2.5

A out, has a transformer got on and old TV on my street.....hi!).

Regards Ron



73 Alex I0SKK



--
Internal Virus Database is out-of-date.
Checked by AVG Anti-Virus.
Version: 7.0.300 / Virus Database: 265.8.6 - Release Date: 07/02/05

Yahoo! Groups Links







--
Internal Virus Database is out-of-date.
Checked by AVG Anti-Virus.
Version: 7.0.300 / Virus Database: 265.8.6 - Release Date: 07/02/05

--
Internal Virus Database is out-of-date.
Checked by AVG Anti-Virus.
Version: 7.0.300 / Virus Database: 265.8.6 - Release Date: 07/02/05

Sure we can try to setup a qso Alessandro.
Would be great to make a scheduled qso on 10.108 or 10.118
But of course condx must be there. My experience is condx are best in
the morning abt 11-12 o?lock and afternoon 4 o?lock.
By the way I used CWget and CWtype since I do not 'speak' morse...
next thursday, friday, saturday or sunday.
Mention a day and a time dr Alex and i will try to be there.
Ciao ciao from a windy Holland
ron pa2rf

--- In BITX20@..., "I0SKK - Alessandro Santucci"
<I0SKK@f...> wrote:

Hallo Ron,
I'm reading about your 30 m test and I'd like to join....
In this last period I'0m testing a simple but effective vert antenna
(someone calls Rybakov....boh!), and I'm using 10 MHz quite often.

Yesterday

I had a good 2xqrp qso with a DJ station so I'd like to try a 2xqrp

qso with

you, from PA. Moreover I'm looking for a 2xqrp DXCC challenge so I

need PA

qso and it would be good to be able to make this qso.On yor two

frequencies

I've quite free band so is possible to try both, maybe the 10.118

could be

better without DX calls. So if you are intersted we can tray, tell

me at

what time.
I use a K2 Elecraft and this 7.5 m vertical on my roof.

Anyway have my best 73's and thanks for reading about your very

intersting

tests. Apart in past (and now also...) I used to do the same as

Hans,

getting all I found on the street, by old TV equipments...., but

today I've

too much in my house.....(by the way the power supply I still use,

with 2.5

A out, has a transformer got on and old TV on my street.....hi!).

Regards Ron



73 Alex I0SKK



--
Internal Virus Database is out-of-date.
Checked by AVG Anti-Virus.
Version: 7.0.300 / Virus Database: 265.8.6 - Release Date: 07/02/05

Hallo Ron,
I'm reading about your 30 m test and I'd like to join....
In this last period I'0m testing a simple but effective vert antenna
(someone calls Rybakov....boh!), and I'm using 10 MHz quite often. Yesterday
I had a good 2xqrp qso with a DJ station so I'd like to try a 2xqrp qso with
you, from PA. Moreover I'm looking for a 2xqrp DXCC challenge so I need PA
qso and it would be good to be able to make this qso.On yor two frequencies
I've quite free band so is possible to try both, maybe the 10.118 could be
better without DX calls. So if you are intersted we can tray, tell me at
what time.
I use a K2 Elecraft and this 7.5 m vertical on my roof.

Anyway have my best 73's and thanks for reading about your very intersting
tests. Apart in past (and now also...) I used to do the same as Hans,
getting all I found on the street, by old TV equipments...., but today I've
too much in my house.....(by the way the power supply I still use, with 2.5
A out, has a transformer got on and old TV on my street.....hi!).

Regards Ron



73 Alex I0SKK



--
Internal Virus Database is out-of-date.
Checked by AVG Anti-Virus.
Version: 7.0.300 / Virus Database: 265.8.6 - Release Date: 07/02/05

Hi there Hans,
Nice story about the tuning cap. Your vfo looks fine. If CW goes ok,
drift should be less than 100 Hz or so. Congratulations.
My components for the huf&puf circuitry arrived but i did not touch
the soldering equipment this weekend. I decided to participate in my
first HF contest the 50th Dutch PACC. This had nothing to do with QRP
and homebrew equipment!. Made about 70 contacts with old Kenwood
transceiver from 1972 with tubes (plenty of pwr)...
The more I think of the beacon project, the more i like it.
How about a qrp 250mW TX on 18.0xy MHz calling CW using a PIC
generating the cw code...
Bye for now
ron

--- In BITX20@..., Hans Summers <Hans.Summers@t...> wrote:

Hello Ron

My VFO uses just a simple 74LS04 inverter, and it's surprisingly

stable even

at 10MHz, after some warm-up time. Perfectly adequate for a CW QSO.

The main

problem with it is that I did not gear the tuning knob, so the

tuning rate

is very fast! By the way, speaking of recycling - that tuning

capacitor came

out of a 1970's radio tuner which I dismantled. I found it at the

rubbish

dump a year ago. I had a car full of garden waste which I was

dumping there.

I saw this thing on the ground next to the door where you pour the

waste in.

The strangest thing happened! All by itself, it just jumped off the

ground

and into the boot of my car!

All I know about the Tweenies and Teletubbies is that in both

cases, they

wear ridiculous suits in bright colours, have silly names, and

dance around

singing funny songs. My daughter is the expert ;-)

73 Hans G0UPL


-----Original Message-----
From: Ron [mailto:pa2rf@y...]
Sent: 11 February 2005 07:20
To: BITX20@...
Subject: [BITX20] Re: Recycling monitors




Good morning OM
Nice 30m rx Hans!
Similar to the dc rx i built, altough i used an old so41p (which

are

not produced anymore). And i have used to x-tals for the oscillator
instead of a free vfo. Ordered them from Funk Amateur a magazin in
Germany. The complete trscvr is in an old CD-player housing now.

With

a nice Aluminium plate on the front, it looks brand-new (Where did
you buy that ...)
Sometimes there is some broadcast breaktrough but not often. I
discovered that around 11 o-clock in the morning and 4 o-clock in

the

afternoon i get the best results. Stations seems to be around the
corner. I worked with 5 watt station from Poland which was awfully
loud. If condx are there it is a great band.
During evening the band seems dead last couple of weeks. I think G -

PA is too short distance for 30m but we can try if you like. I only
have 10,108 and 10,118 on cw available...OK, i asked my son about
Tweenies. He said they are similar to the Tubbies and further

refused

to talk about it :-((
He is into Yu-kiyo, Spongebob Squarepants and The Karate Kid these
days...
bye
ron

--- In BITX20@..., Hans Summers <Hans.Summers@t...>

wrote:

Hi Ron

I like 30m too. One of my other projects is a miniature CW

transceiver for

30m. Nice job on the 30m rig, I hadn't seen that on your site

before, I

think it is newer than when I previously visited. I have a 30m

direct

conversion receiver see

<> but it suffers

from plenty

of broadcast breakthrough. Nevertheless I had some nice QSO's on

it

including my first Italian station. Perhaps when I am next able to

get my

station QRV again on 30m we can try a QSO! PA might be a little

too

close

for 30m though, except under unusual band condx.

Hmm so you have teletubbies too. My daughter loves them. She's 2

on

1st

April. Only problem is, she gets very angry when the programme

finishes and

blames it on me. What does she want me to do? Telephone the BBC

and

ask them

to play it again? Ah well, guess I shouldn't have dismantled the

video

recorder ;-)

73 Hans G0UPL

> .

_____





_____

Do you Yahoo!?
Yahoo! Search presents - Jib

<

ure/ji

bjabinaugural.html> Jab's 'Second Term'

*** eSafe detected hostile content in this email and removed it.

***

&#92;HTML Active Content: Objects Removed: 2 - Invalid IMG Tag






_____

Do you Yahoo!?
Yahoo! Search presents - Jib

<

ure/ji

bjabinaugural.html> Jab's 'Second Term'

Yahoo! Groups Sponsor

ADVERTISEMENT

<

6/D=gr

oups/S=1705063108:HM/EXP=1108130267/A=2532114/R=2/SIG=12kg7r4ig/*http:

//clk.

atdmt.com/NFX/go/yhxxxnfx0020000014nfx/direct/01/&time=110804386715136

4>

_____

Yahoo! Groups Links


* To visit your group on the web, go to:

<>


* To unsubscribe from this group, send an email to:
BITX20-unsubscribe@...
<mailto:BITX20-unsubscribe@...?subject=Unsubscribe>


* Your use of Yahoo! Groups is subject to the Yahoo! Terms of

Service

<> .



*** eSafe detected hostile content in this email and removed it.

***

&#92;HTML Active Content: Objects Removed: 2 - Invalid IMG Tag

Yahoo! Groups Links

On Feb 11, 2005, at 9:12 AM, Hans Summers wrote:

Sounds like a nice brain-teaser project. What band are you making it for?

I haven't decided yet, but it'll have to be a little higher than 160M, because it'll be difficult enough winding toroids for 10m.

I think I've got "dead bug" construction figured out for the larger surface-mount ICs. But for it to be easy I have to develop a home-made spotwelder that can tack a #30 wire onto an SOIC lead and not melt any transistors inside the chip.

Half the fun may be developing my own micromanipulators.

Jim N6OTQ

Absolutely agreed Jim

I recycle anything and everything! The older the equipment, the better,
since it will have more "normal" sized components and less SMD ones. Also,
older equipment had less IC integration so more components were required to
perform the same function. If it's so old it contains VALVES (tubes to you),
then all the better!

Sounds like a nice brain-teaser project. What band are you making it for?

I think it's a brain teaser trying to make a transceiver out of the parts in
that monitor. Of course, there are no variable capacitors. But plenty of
diodes which can be pressed into service as varicaps! Perhaps you could do
the same and get away without adding variable capacitors from "outside"?

73 Hans G0UPL

Hello Ron

My VFO uses just a simple 74LS04 inverter, and it's surprisingly stable even
at 10MHz, after some warm-up time. Perfectly adequate for a CW QSO. The main
problem with it is that I did not gear the tuning knob, so the tuning rate
is very fast! By the way, speaking of recycling - that tuning capacitor came
out of a 1970's radio tuner which I dismantled. I found it at the rubbish
dump a year ago. I had a car full of garden waste which I was dumping there.
I saw this thing on the ground next to the door where you pour the waste in.
The strangest thing happened! All by itself, it just jumped off the ground
and into the boot of my car!

All I know about the Tweenies and Teletubbies is that in both cases, they
wear ridiculous suits in bright colours, have silly names, and dance around
singing funny songs. My daughter is the expert ;-)

73 Hans G0UPL

Hi Chris,

Thanks for your info. I guess you're right about the overtone
crystal. I am gonna try 8Mhz and triple it.
73
Ruud.


--- In BITX20@..., "vdberghak" <vdberghak@z...> wrote:

Hi Ruud,
there is something wrong with your VXO. With a 13 MHz VXO that I

and

an other ham use, a frequency shift of about 60 kHz can be reached!
I think you can only shift so less because you do have the VXO
directly on 24 MHz. Because that is an overtone x-tal, it will not
work as a VXO. What you can do is make the VXO with that x-tal on 8
MHz, then tripling it. Likely you will have then more then hundred
KHz shift possibility.
Good luck,
Chris.

- The oscilator in my BITX20 will (if possible) be a VXO on

24MHz.

The reason for this is simple: lots of cristals in the junkbox

and

a

good supression of the signal by the Pi-filter. I can vary tot 5

kHz

when I use three crystals. But the frequency of the oscilator

also

goes about 5 Kc up when a crystal is added!
The VXO is not ready yet. I still have to work for enough output

for

the balance mixer.

Good morning OM
Nice 30m rx Hans!
Similar to the dc rx i built, altough i used an old so41p (which are
not produced anymore). And i have used to x-tals for the oscillator
instead of a free vfo. Ordered them from Funk Amateur a magazin in
Germany. The complete trscvr is in an old CD-player housing now. With
a nice Aluminium plate on the front, it looks brand-new (Where did
you buy that ...)
Sometimes there is some broadcast breaktrough but not often. I
discovered that around 11 o-clock in the morning and 4 o-clock in the
afternoon i get the best results. Stations seems to be around the
corner. I worked with 5 watt station from Poland which was awfully
loud. If condx are there it is a great band.
During evening the band seems dead last couple of weeks. I think G -
PA is too short distance for 30m but we can try if you like. I only
have 10,108 and 10,118 on cw available...OK, i asked my son about
Tweenies. He said they are similar to the Tubbies and further refused
to talk about it :-((
He is into Yu-kiyo, Spongebob Squarepants and The Karate Kid these
days...
bye
ron

--- In BITX20@..., Hans Summers <Hans.Summers@t...> wrote:

Hi Ron

I like 30m too. One of my other projects is a miniature CW

transceiver for

30m. Nice job on the 30m rig, I hadn't seen that on your site

before, I

think it is newer than when I previously visited. I have a 30m

direct

conversion receiver see

<> but it suffers

from plenty

of broadcast breakthrough. Nevertheless I had some nice QSO's on it
including my first Italian station. Perhaps when I am next able to

get my

station QRV again on 30m we can try a QSO! PA might be a little too

close

for 30m though, except under unusual band condx.

Hmm so you have teletubbies too. My daughter loves them. She's 2 on

1st

April. Only problem is, she gets very angry when the programme

finishes and

blames it on me. What does she want me to do? Telephone the BBC and

ask them

to play it again? Ah well, guess I shouldn't have dismantled the

video

recorder ;-)

73 Hans G0UPL

> .

_____





_____

Do you Yahoo!?
Yahoo! Search presents - Jib

<
ure/ji

bjabinaugural.html> Jab's 'Second Term'

*** eSafe detected hostile content in this email and removed it. ***

&#92;HTML Active Content: Objects Removed: 2 - Invalid IMG Tag






_____

Do you Yahoo!?
Yahoo! Search presents - Jib

<
ure/ji

bjabinaugural.html> Jab's 'Second Term'

Yahoo! Groups Sponsor

ADVERTISEMENT

<
6/D=gr

oups/S=1705063108:HM/EXP=1108130267/A=2532114/R=2/SIG=12kg7r4ig/*http:
//clk.

atdmt.com/NFX/go/yhxxxnfx0020000014nfx/direct/01/&time=110804386715136
4>

_____

Yahoo! Groups Links


* To visit your group on the web, go to:

<>


* To unsubscribe from this group, send an email to:
BITX20-unsubscribe@...
<mailto:BITX20-unsubscribe@...?subject=Unsubscribe>


* Your use of Yahoo! Groups is subject to the Yahoo! Terms of

Service

<> .



*** eSafe detected hostile content in this email and removed it. ***

&#92;HTML Active Content: Objects Removed: 2 - Invalid IMG Tag

You don't have to stop at monitors.

I always comb the swapfests and dumpsters (dustbins to most of you) for outdated computer slot cards. My favorite find is always an IDE 2400 baud modem. They always have a speaker, an LM386, at least one voltage regulator, and a relay or two. Plus many usable passive components like the DAA transformer and a crystal or two. Second best? An external 2400 baud modem -- unless it's in a case you can re-use. That's a big plus.

And I don't turn down unspecified but nicely priced junk -- at least where I live, we see some awfully high-tech near-microwave stuff being thrown away.

My current brain-teaser is to put a single-band tunable CW transceiver into a round candy tin 13 mm tall by about 45 mm in diameter, not counting battery or speaker. Made from computer junk. With calibrated separate TX / RX tuner dials inside.

Well, I may have to get variable capacitors and resistors from non-computer sources.

Jim N6OTQ

Hi Ruud,
there is something wrong with your VXO. With a 13 MHz VXO that I and
an other ham use, a frequency shift of about 60 kHz can be reached!
I think you can only shift so less because you do have the VXO
directly on 24 MHz. Because that is an overtone x-tal, it will not
work as a VXO. What you can do is make the VXO with that x-tal on 8
MHz, then tripling it. Likely you will have then more then hundred
KHz shift possibility.
Good luck,
Chris.

- The oscilator in my BITX20 will (if possible) be a VXO on 24MHz.
The reason for this is simple: lots of cristals in the junkbox and

a

good supression of the signal by the Pi-filter. I can vary tot 5

kHz

when I use three crystals. But the frequency of the oscilator also
goes about 5 Kc up when a crystal is added!
The VXO is not ready yet. I still have to work for enough output

for

the balance mixer.