On Sep 10, 2005, at 10:40 AM, Ashhar Farhan wrote: the tins at my convenience store were the mini box variety.
it can be done. you will have to shift to a VCO and probably decrease the
power level to a watt or thereabouts. Hmm, some of us cheat, and place our heatsinks on the outside on the bottom of the tin, and extend control shafts outside the can as well. C'mon, your mic, key, and antenna are on the outside of the tin! I may try winding the transformers on toroids rather than binocular balun cores -- that'll save me a lot of room if I can get something close to the same impedance. (Hint -- put one winding at the specified number of turns on the balun core and measure its inductance, then match that inductance on the toroid with one winding. Then go bifilar or trifilar. This works about half the time in lo-power networks.) And those faucet washers? More toroids, because I have a deep junkbox thanks to junk computers and telecom gear. Dead-bug and Manhattan-style construction, with pieces of tin snipped from other Altoids cans, should make this fit. But it might get be drummed out of the local QRP group, because an Altoid BITX is still phone. Jim N6OTQ
|
go, man, go!
the tins at my convenience store were the mini box variety.
it can be done. you will have to shift to a VCO and probably decrease the power level to a watt or thereabouts.
- farhan
- farhan
toggle quoted message
Show quoted text
On Sat, 10 Sep 2005, Arv Evans K7HKL wrote: Jim N6OTQ
You might want to be thinking about 4 to 6 of the larger Altoids tins.
However, this is not a bad idea because that way each section could be
adequately sheilded.
Altoids tin housed equipment usually means simple DC receivers and CW only
transmitters. The BITX is much more than that. It is a full
superheterodyne SSB design with ladder crystal filter, and a fairly hefty
RF PA. It can be made quite compact by building it in modules, but I'm
afraid it will still take several Altoids tins to house it.
That doesn't mean that you cannot try though. Good luck, and please let
the group know your results.
73's
Arv K7HKL
On Sat, 10 Sep 2005 09:40:15 -0600, Jim Strohm <jstrohm@...> wrote:
Has anybody been able to fit a BITX into an Altoids tin yet? If so,
I'd like to ask a few questions about it, either on- or off-list.
Among my QRP friends, our rule of thumb is that if the loose parts
fit in an Altoids, the completed circuit will fit. And my parts kit
fits.
Thanx
Jim N6OTQ
YAHOO! GROUPS LINKS
Visit your group "BITX20" on the web.
To unsubscribe from this group, send an email to:
BITX20-unsubscribe@...
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|
Has anybody been able to fit a BITX into an Altoids tin yet? If so, I'd like to ask a few questions about it, either on- or off-list.
Among my QRP friends, our rule of thumb is that if the loose parts fit in an Altoids, the completed circuit will fit. And my parts kit fits.
Thanx
Jim N6OTQ
|
Re: get ticket after long wait?????
My congratulations to you both, I'll look for you on 20m.
73 Mike G8NXD
--
toggle quoted message
Show quoted text
On 10 Sep 2005 at 15:54, kumar gautam wrote: Hi all,
i and my brother get the ticket after long waiting of one year, thanks to MR.
IRSHAD AHMAD. KUMAR GAUTAM VU3KGL KUMAR UTTAM VU3KUL with 73's de kumar gautam
---------------------------------
Yahoo! India Matrimony: Find your partner now.
|
get ticket after long wait?????
Hi all,
i and my brother get the ticket after long waiting of one year, thanks to MR. IRSHAD AHMAD.
KUMAR GAUTAM VU3KGL
KUMAR UTTAM VU3KUL
with 73's
de kumar gautam
: Find your partner now.
|
Jim N6OTQ
You might want to be thinking about 4 to 6 of the larger Altoids tins. However, this is not a bad idea because that way each section could be adequately sheilded.
Altoids tin housed equipment usually means simple DC receivers and CW only transmitters. The BITX is much more than that. It is a full superheterodyne SSB design with ladder crystal filter, and a fairly hefty RF PA. It can be made quite compact by building it in modules, but I'm afraid it will still take several Altoids tins to house it.
That doesn't mean that you cannot try though. Good luck, and please let the group know your results.
73's
Arv K7HKL
toggle quoted message
Show quoted text
On Sat, 10 Sep 2005 09:40:15 -0600, Jim Strohm <jstrohm@...> wrote: Has anybody been able to fit a BITX into an Altoids tin yet? If so,
I'd like to ask a few questions about it, either on- or off-list.
Among my QRP friends, our rule of thumb is that if the loose parts
fit in an Altoids, the completed circuit will fit. And my parts kit
fits.
Thanx
Jim N6OTQ
YAHOO! GROUPS LINKS
Visit your group "BITX20" on the web.
To unsubscribe from this group, send an email to:
BITX20-unsubscribe@...
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
--
Life is too short to be serious. 8-)
|
Re: various squeak flutes that about it do not hear +- 4mhz +-4.2 mhz +-4.3?
OK Arjan,
Thanks!
Dank voor de complimenten. Vind jouw artikel over de BITX hardstikke goed. Fraaie website !
73
Ron
Arjan wrote:
Hello Rahul, Farhan, Ron, thanks for the nice? reactions over my
home page.
Rahul I will change the mixer yet to double balanced and will
replace? also the resistance by Q11 for a wire thread. thanks for
the information.?
Faran I presented not is activated my home page well by Google
only.? Altavista and Yahoo works seek well on pe1abe.? I want to go
place the 2 meters plans on my home page.?
Ron Ik kijk regelmatig op jou site is ook erg mooi ook met van alles
bezich.Ik heb een link naar jou site bij bitx staan .
73. Arjan
--- In BITX20@..., Ron Brink wrote:
> Nice article on your website Arjan ! I like the pictures, it gives
a good impression of the building proces.
> If you like you can visit my website on which I wrote an
article
about the BITX17 .? Click on " zenders (tx) " --> HF ---> BITX17
> Enjoy reading!
> My HF Homebrew website:
>?
>
>?
> Vriendelijke groet en goede DX toegewenst
>?
> 73 de Ron
> PA2RF
>?
>
> Arjan wrote:
>
> Hello Rahul problem has been solved.? I have placed extra
> condensators.? And have shots between bfo xtal filter and round
> amplifier Q3 coplaced.? The reception is become better.? Have
alone
> on 4 mhz yet that tone reflect (mirror) frequency 10mhz -4 mhz =
> 6mhz I go the vfo also foresee of shots.? Photograph my website
>
>
>
>
>
>
>
>
>
>
>
> --- In BITX20@..., Rahul Srivastava
wrote:
> > Hi,
> >?
> > The beat at 4Mhz is normal due to whole number freq of IF and
VFO
> interacting. Other spurrs have not been encountered here in any of
> the 10 boards made till date.
> >?
> > This indicates probably over driving of mixers possibly due to
> better devices giving a higher gain in your case.
> >?
> > 73
> >?
> > Rahul VU3WJM
> >
> > Arjan wrote:
> >
> > Hello Rahul thank? your answer. I will soon check the vfo and
the
> > bfo signals.? I have tries made various things the antenna
> entrance
> > short circuit to earth or love want to remain tune connected
> remains
> > works the mixer to earth tones bee. also I an external
vfo this
> > problem. Further as reception rx excellently of the bitx
> >
> > 73 Arjan
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > --- In BITX20@..., Rahul Srivastava
> wrote:
> > > Hi!
> > >?
> > > Check VFO and BFO injection levels. It should be aroung 1.5V
Pk
> to
> > Pk. Also note that Q1 as per V3 layout is 2SC2570A or similar
high
> > Ft device having a different pin out. Rest all are BC547s.
> > >?
> > > 73
> > >?
> > > Rahul VU3WJM
> > >
> > > Arjan wrote:
> > > help
> > > Hello all sorry my engels? is not so good. only I have a
problem
> > and I
> > > know not how I this on must discharge. I have now my BITX20
> built
> > on
> > > the pcb ver3.the rx is excellent but I have as I tune various
> > squeak
> > > flutes that about it do not hear +- 4mhz +-4.2 mhz +-4.3??? Who
> can
> > me
> > > help whit this problem ?????
> > > Arjan
> > >
> > >
> > >
> > >
> > > SPONSORED LINKS
> > > Ham radio antenna Ham radio Ham radio sales Asian tsunami
> disaster
> > Ham radio store
> > >
> > > ---------------------------------
> > > YAHOO! GROUPS LINKS
> > >
> > >
> > >???? Visit your group "BITX20" on the web.
> > >??
> > >???? To unsubscribe from this group, send
an email to:
> > >? BITX20-unsubscribe@...
> > >??
> > >???? Your use of Yahoo! Groups is subject to the Yahoo! Terms
of
> > Service.
> > >
> > >
> > > ---------------------------------
> > >
> > >
> > >
> > > Send instant messages to your online friends
> >
> >
> >
> >
> >
> >
> > ---------------------------------
> > YAHOO! GROUPS LINKS
> >
> >
> >???? Visit your group "BITX20" on the web.
> >??
> >???? To unsubscribe from this group, send an email to:
> >? BITX20-unsubscribe@...
> >??
>
>???? Your use of Yahoo! Groups is subject to the Yahoo! Terms of
> Service.
> >
> >
> > ---------------------------------
> >
> >
> >
> >????????????
> > ---------------------------------
> > To help you stay safe and secure online, we've developed the all
> new Yahoo! Security Centre.
>
>
>
>
> SPONSORED LINKS
> Ham radio antenna Ham radio Ham radio sales Asian tsunami disaster
Ham radio store
>
> ---------------------------------
> YAHOO! GROUPS LINKS
>
>
>???? Visit your group "BITX20" on the web.
>??
>???? To unsubscribe from this group, send an email to:
>? BITX20-unsubscribe@...
>??
>???? Your use of Yahoo! Groups is subject to the Yahoo! Terms of
Service.
>
>
> ---------------------------------
>
>
>
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|
Re: various squeak flutes that about it do not hear +- 4mhz +-4.2 mhz +-4.3…
Hello Rahul, Farhan, Ron, thanks for the nice reactions over my home page. Rahul I will change the mixer yet to double balanced and will replace also the resistance by Q11 for a wire thread. thanks for the information. Faran I presented not is activated my home page well by Google only. Altavista and Yahoo works seek well on pe1abe. I want to go place the 2 meters plans on my home page. Ron Ik kijk regelmatig op jou site is ook erg mooi ook met van alles bezich.Ik heb een link naar jou site bij bitx staan . 73. Arjan --- In BITX20@..., Ron Brink <pa2rf@y...> wrote: Nice article on your website Arjan ! I like the pictures, it gives a good impression of the building proces. If you like you can visit my website on which I wrote an article about the BITX17 . Click on " zenders (tx) " --> HF ---> BITX17 Enjoy reading!
My HF Homebrew website:
Vriendelijke groet en goede DX toegewenst
73 de Ron
PA2RF
Arjan <arjan_holland@y...> wrote:
Hello Rahul problem has been solved. I have placed extra
condensators. And have shots between bfo xtal filter and round
amplifier Q3 coplaced. The reception is become better. Have alone on 4 mhz yet that tone reflect (mirror) frequency 10mhz -4 mhz =
6mhz I go the vfo also foresee of shots. Photograph my website
--- In BITX20@..., Rahul Srivastava <vu3wjm@y...> wrote: Hi,
The beat at 4Mhz is normal due to whole number freq of IF and
VFO interacting. Other spurrs have not been encountered here in any of
the 10 boards made till date.
This indicates probably over driving of mixers possibly due to
better devices giving a higher gain in your case.
73
Rahul VU3WJM
Arjan <arjan_holland@y...> wrote:
Hello Rahul thank your answer. I will soon check the vfo and
the bfo signals. I have tries made various things the antenna entrance
short circuit to earth or love want to remain tune connected remains
works the mixer to earth tones bee. also I an external vfo this
problem. Further as reception rx excellently of the bitx
73 Arjan
--- In BITX20@..., Rahul Srivastava <vu3wjm@y...> wrote:
Hi!
Check VFO and BFO injection levels. It should be aroung 1.5V
Pk to
Pk. Also note that Q1 as per V3 layout is 2SC2570A or similar high Ft device having a different pin out. Rest all are BC547s.
73
Rahul VU3WJM
Arjan <arjan_holland@y...> wrote:
help
Hello all sorry my engels is not so good. only I have a
problem and I
know not how I this on must discharge. I have now my BITX20 built
on
the pcb ver3.the rx is excellent but I have as I tune various squeak
flutes that about it do not hear +- 4mhz +-4.2 mhz +-4.3… Who can
me
help whit this problem ????
Arjan
SPONSORED LINKS
Ham radio antenna Ham radio Ham radio sales Asian tsunami disaster
Ham radio store
---------------------------------
YAHOO! GROUPS LINKS
Visit your group "BITX20" on the web.
To unsubscribe from this group, send an email to:
BITX20-unsubscribe@...
Your use of Yahoo! Groups is subject to the Yahoo! Terms
of Service.
---------------------------------
Send instant messages to your online friends
---------------------------------
YAHOO! GROUPS LINKS
Visit your group "BITX20" on the web.
To unsubscribe from this group, send an email to:
BITX20-unsubscribe@...
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
---------------------------------
---------------------------------
To help you stay safe and secure online, we've developed the all
new Yahoo! Security Centre.
SPONSORED LINKS
Ham radio antenna Ham radio Ham radio sales Asian tsunami disaster
Ham radio store
---------------------------------
YAHOO! GROUPS LINKS
Visit your group "BITX20" on the web.
To unsubscribe from this group, send an email to:
BITX20-unsubscribe@...
Your use of Yahoo! Groups is subject to the Yahoo! Terms of
Service.
---------------------------------
__________________________________________________
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Tired of spam? Yahoo! Mail has the best spam protection around
|
Re: various squeak flutes that about it do not hear +- 4mhz +-4.2 mhz +-4.3?
Nice article on your website Arjan ! I like the pictures, it gives a good impression of the building proces.
If you like you can visit my website on which I wrote an article about the BITX17 .? Click on " zenders (tx) " --> HF ---> BITX17
Enjoy reading!
My HF Homebrew?website:
?
?
Vriendelijke groet en goede DX toegewenst
?
73 de Ron
PA2RF
?
Arjan wrote:
Hello Rahul problem has been solved.? I have placed extra
condensators.? And have shots between bfo xtal filter and round
amplifier Q3 coplaced.? The reception is become better.? Have alone
on 4 mhz yet that tone reflect (mirror) frequency 10mhz -4 mhz =
6mhz I go the vfo also foresee of shots.? Photograph my website
--- In BITX20@..., Rahul Srivastava wrote:
> Hi,
>?
> The beat at 4Mhz is normal due to whole number freq of IF and VFO
interacting. Other spurrs have not been encountered here in any of
the 10 boards made till date.
>?
> This indicates probably over driving of mixers possibly due to
better devices giving a higher
gain in your case.
>?
> 73
>?
> Rahul VU3WJM
>
> Arjan wrote:
>
> Hello Rahul thank? your answer. I will soon check the vfo and the
> bfo signals.? I have tries made various things the antenna
entrance
> short circuit to earth or love want to remain tune connected
remains
> works the mixer to earth tones bee. also I an external vfo this
> problem. Further as reception rx excellently of the bitx
>
> 73 Arjan
>
>
>
>
>
>
>
>
>
>
>
>
>
> --- In BITX20@..., Rahul Srivastava
wrote:
> > Hi!
> >?
> > Check VFO and BFO injection levels. It should be aroung 1.5V Pk
to
> Pk. Also note that Q1 as per V3 layout is 2SC2570A or similar high
> Ft device having a different
pin out. Rest all are BC547s.
> >?
> > 73
> >?
> > Rahul VU3WJM
> >
> > Arjan wrote:
> > help
> > Hello all sorry my engels? is not so good. only I have a problem
> and I
> > know not how I this on must discharge. I have now my BITX20
built
> on
> > the pcb ver3.the rx is excellent but I have as I tune various
> squeak
> > flutes that about it do not hear +- 4mhz +-4.2 mhz +-4.3??? Who
can
> me
> > help whit this problem ?????
> > Arjan
> >
> >
> >
> >
> > SPONSORED LINKS
> > Ham radio antenna Ham radio Ham radio sales Asian tsunami
disaster
> Ham radio store
> >
> > ---------------------------------
> > YAHOO! GROUPS LINKS
> >
> >
>
>???? Visit your group "BITX20" on the web.
> >??
> >???? To unsubscribe from this group, send an email to:
> >? BITX20-unsubscribe@...
> >??
> >???? Your use of Yahoo! Groups is subject to the Yahoo! Terms of
> Service.
> >
> >
> > ---------------------------------
> >
> >
> >
> > Send instant messages to your online friends
>
>
>
>
>
>
> ---------------------------------
> YAHOO! GROUPS LINKS
>
>
>???? Visit your group "BITX20" on the web.
>??
>???? To unsubscribe from this group, send an email to:
>?
BITX20-unsubscribe@...
>??
>???? Your use of Yahoo! Groups is subject to the Yahoo! Terms of
Service.
>
>
> ---------------------------------
>
>
>
> ????? ?????
> ---------------------------------
> To help you stay safe and secure online, we've developed the all
new Yahoo! Security Centre.
__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com
|
Re: various squeak flutes that about it do not hear +- 4mhz +-4.2 mhz +-4.3…
Arjan? one more thing I see you have repeated the 100E resistor on Q11 collector, a mistake on my V3 layout kindly correct and replace?one by a wire link.
?
73
?
Arjan wrote:
Hello Rahul problem has been solved.? I have placed extra
condensators.? And have shots between bfo xtal filter and round
amplifier Q3 coplaced.? The reception is become better.? Have alone
on 4 mhz yet that tone reflect (mirror) frequency 10mhz -4 mhz =
6mhz I go the vfo also foresee of shots.? Photograph my website
--- In BITX20@..., Rahul Srivastava wrote:
> Hi,
>?
> The beat at 4Mhz is normal due to whole number freq of IF and VFO
interacting. Other spurrs have not been encountered here in any of
the 10 boards made till date.
>?
> This indicates probably over driving of mixers possibly due to
better devices giving a higher
gain in your case.
>?
> 73
>?
> Rahul VU3WJM
>
> Arjan wrote:
>
> Hello Rahul thank? your answer. I will soon check the vfo and the
> bfo signals.? I have tries made various things the antenna
entrance
> short circuit to earth or love want to remain tune connected
remains
> works the mixer to earth tones bee. also I an external vfo this
> problem. Further as reception rx excellently of the bitx
>
> 73 Arjan
>
>
>
>
>
>
>
>
>
>
>
>
>
> --- In BITX20@..., Rahul Srivastava
wrote:
> > Hi!
> >?
> > Check VFO and BFO injection levels. It should be aroung 1.5V Pk
to
> Pk. Also note that Q1 as per V3 layout is 2SC2570A or similar high
> Ft device having a different
pin out. Rest all are BC547s.
> >?
> > 73
> >?
> > Rahul VU3WJM
> >
> > Arjan wrote:
> > help
> > Hello all sorry my engels? is not so good. only I have a problem
> and I
> > know not how I this on must discharge. I have now my BITX20
built
> on
> > the pcb ver3.the rx is excellent but I have as I tune various
> squeak
> > flutes that about it do not hear +- 4mhz +-4.2 mhz +-4.3??? Who
can
> me
> > help whit this problem ?????
> > Arjan
> >
> >
> >
> >
> > SPONSORED LINKS
> > Ham radio antenna Ham radio Ham radio sales Asian tsunami
disaster
> Ham radio store
> >
> > ---------------------------------
> > YAHOO! GROUPS LINKS
> >
> >
>
>???? Visit your group "BITX20" on the web.
> >??
> >???? To unsubscribe from this group, send an email to:
> >? BITX20-unsubscribe@...
> >??
> >???? Your use of Yahoo! Groups is subject to the Yahoo! Terms of
> Service.
> >
> >
> > ---------------------------------
> >
> >
> >
> > Send instant messages to your online friends
>
>
>
>
>
>
> ---------------------------------
> YAHOO! GROUPS LINKS
>
>
>???? Visit your group "BITX20" on the web.
>??
>???? To unsubscribe from this group, send an email to:
>?
BITX20-unsubscribe@...
>??
>???? Your use of Yahoo! Groups is subject to the Yahoo! Terms of
Service.
>
>
> ---------------------------------
>
>
>
> ????? ?????
> ---------------------------------
> To help you stay safe and secure online, we've developed the all
new Yahoo! Security Centre.
How much free photo storage do you get? Store your holiday snaps for FREE with Yahoo! Photos.
|
Re: various squeak flutes that about it do not hear +- 4mhz +-4.2 mhz +-4.3…
HI! Arjan,
?
I am very happy to have had a look at your wonderful site. It is a nice feeling to see a borad being made by some one else.
?
However I noticed that the complete board shows that is is not ver3 but Ver2 with only a balanced mixer. The second coil is lacking in mixer stage. I too experienced a bit higher level of spurii in balanced mixer config. The ver?3 with a?doubly balanced mixer is nevertheless a better performer. Since you have already come this far just add another balun/ binocular coil to mixer.
?
Let us know how it turns out.
?
73
?
Rahul VU3WJM
?
?
?
Arjan wrote:
Hello Rahul problem has been solved.? I have placed extra
condensators.? And have shots between bfo xtal filter and round
amplifier Q3 coplaced.? The reception is become better.? Have alone
on 4 mhz yet that tone reflect (mirror) frequency 10mhz -4 mhz =
6mhz I go the vfo also foresee of shots.? Photograph my website
NEW - crystal clear PC to PC
|
Re: various squeak flutes that about it do not hear +- 4mhz +-4.2 mhz +-4.3…
Hello Rahul problem has been solved. I have placed extra condensators. And have shots between bfo xtal filter and round amplifier Q3 coplaced. The reception is become better. Have alone on 4 mhz yet that tone reflect (mirror) frequency 10mhz -4 mhz = 6mhz I go the vfo also foresee of shots. Photograph my website --- In BITX20@..., Rahul Srivastava <vu3wjm@y...> wrote: Hi,
The beat at 4Mhz is normal due to whole number freq of IF and VFO interacting. Other spurrs have not been encountered here in any of the 10 boards made till date.
This indicates probably over driving of mixers possibly due to
better devices giving a higher gain in your case.
73
Rahul VU3WJM
Arjan <arjan_holland@y...> wrote:
Hello Rahul thank your answer. I will soon check the vfo and the
bfo signals. I have tries made various things the antenna
entrance short circuit to earth or love want to remain tune connected remains works the mixer to earth tones bee. also I an external vfo this
problem. Further as reception rx excellently of the bitx
73 Arjan
--- In BITX20@..., Rahul Srivastava <vu3wjm@y...> wrote: Hi!
Check VFO and BFO injection levels. It should be aroung 1.5V Pk
to Pk. Also note that Q1 as per V3 layout is 2SC2570A or similar high
Ft device having a different pin out. Rest all are BC547s.
73
Rahul VU3WJM
Arjan <arjan_holland@y...> wrote:
help
Hello all sorry my engels is not so good. only I have a problem
and I
know not how I this on must discharge. I have now my BITX20 built on
the pcb ver3.the rx is excellent but I have as I tune various squeak
flutes that about it do not hear +- 4mhz +-4.2 mhz +-4.3… Who can me
help whit this problem ????
Arjan
SPONSORED LINKS
Ham radio antenna Ham radio Ham radio sales Asian tsunami disaster Ham radio store
---------------------------------
YAHOO! GROUPS LINKS
Visit your group "BITX20" on the web.
To unsubscribe from this group, send an email to:
BITX20-unsubscribe@...
Your use of Yahoo! Groups is subject to the Yahoo! Terms of
Service.
---------------------------------
Send instant messages to your online friends
---------------------------------
YAHOO! GROUPS LINKS
Visit your group "BITX20" on the web.
To unsubscribe from this group, send an email to:
BITX20-unsubscribe@...
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
---------------------------------
---------------------------------
To help you stay safe and secure online, we've developed the all
new Yahoo! Security Centre.
|
Re: various squeak flutes that about it do not hear +- 4mhz +-4.2 mhz +-4.3…
very nice site, arjan. i see that you have updated the bitx20 page. why dont you add your site to google dirctory? it is no searchable as of now.
do you have a schematic for the 2meter transceiver? i can only follow broken swedish. i could, though, follow most of the text on your site.
- farhan
toggle quoted message
Show quoted text
On Thu, 8 Sep 2005, Rahul Srivastava wrote: Arjan one more thing I see you have repeated the 100E resistor on Q11 collector, a mistake on my V3 layout kindly correct and replace one by a wire link.
73
Arjan <arjan_holland@...> wrote:
Hello Rahul problem has been solved. I have placed extra
condensators. And have shots between bfo xtal filter and round
amplifier Q3 coplaced. The reception is become better. Have alone
on 4 mhz yet that tone reflect (mirror) frequency 10mhz -4 mhz =
6mhz I go the vfo also foresee of shots. Photograph my website
--- In BITX20@..., Rahul Srivastava <vu3wjm@y...> wrote:
Hi,
The beat at 4Mhz is normal due to whole number freq of IF and VFO interacting. Other spurrs have not been encountered here in any of
the 10 boards made till date.
This indicates probably over driving of mixers possibly due to
better devices giving a higher gain in your case.
73
Rahul VU3WJM
Arjan <arjan_holland@y...> wrote:
Hello Rahul thank your answer. I will soon check the vfo and the
bfo signals. I have tries made various things the antenna
entrance
short circuit to earth or love want to remain tune connected remains
works the mixer to earth tones bee. also I an external vfo this
problem. Further as reception rx excellently of the bitx
73 Arjan
--- In BITX20@..., Rahul Srivastava <vu3wjm@y...> wrote:
Hi!
Check VFO and BFO injection levels. It should be aroung 1.5V Pk
to
Pk. Also note that Q1 as per V3 layout is 2SC2570A or similar high
Ft device having a different pin out. Rest all are BC547s.
73
Rahul VU3WJM
Arjan <arjan_holland@y...> wrote:
help
Hello all sorry my engels is not so good. only I have a problem
and I
know not how I this on must discharge. I have now my BITX20 built
on
the pcb ver3.the rx is excellent but I have as I tune various squeak
flutes that about it do not hear +- 4mhz +-4.2 mhz +-4.3??? Who can
me
help whit this problem ????
Arjan
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Re: various squeak flutes that about it do not hear +- 4mhz +-4.2 mhz +-4.3…
Hi,
?
The beat at 4Mhz is normal due to whole number freq of IF and VFO interacting. Other spurrs have not been encountered here in any of the 10 boards made till date.
?
This indicates probably over driving of mixers possibly due to better devices giving a higher gain in your case.
?
73
?
Rahul VU3WJM
Arjan wrote:
Hello Rahul thank? your answer. I will soon check the vfo and the
bfo signals.? I have tries made various things the antenna entrance
short circuit to earth or love want to remain tune connected remains
works the mixer to earth tones bee. also I an external vfo this
problem. Further as reception rx excellently of the bitx
73 Arjan
--- In BITX20@..., Rahul Srivastava wrote:
> Hi!
>?
> Check VFO and BFO injection levels. It should be aroung 1.5V Pk to
Pk. Also note that Q1 as per V3 layout is 2SC2570A or similar high
Ft device having a different pin out. Rest all are BC547s.
>?
> 73
>?
> Rahul VU3WJM
>
> Arjan wrote:
> help
> Hello all sorry
my engels? is not so good. only I have a problem
and I
> know not how I this on must discharge. I have now my BITX20 built
on
> the pcb ver3.the rx is excellent but I have as I tune various
squeak
> flutes that about it do not hear +- 4mhz +-4.2 mhz +-4.3??? Who can
me
> help whit this problem ?????
> Arjan
>
>
>
>
> SPONSORED LINKS
> Ham radio antenna Ham radio Ham radio sales Asian tsunami disaster
Ham radio store
>
> ---------------------------------
> YAHOO! GROUPS LINKS
>
>
>???? Visit your group "BITX20" on the web.
>??
>???? To unsubscribe from this group, send an email to:
>? BITX20-unsubscribe@...
>??
>???? Your use of Yahoo! Groups is subject to the Yahoo! Terms of
Service.
>
>
>
---------------------------------
>
>
>
> Send instant messages to your online friends
To help you stay safe and secure online, we've developed the all new .
|
Re: various squeak flutes that about it do not hear +- 4mhz +-4.2 mhz +-4.3…
Hello Rahul thank your answer. I will soon check the vfo and the bfo signals. I have tries made various things the antenna entrance short circuit to earth or love want to remain tune connected remains works the mixer to earth tones bee. also I an external vfo this problem. Further as reception rx excellently of the bitx 73 Arjan --- In BITX20@..., Rahul Srivastava <vu3wjm@y...> wrote: Hi!
Check VFO and BFO injection levels. It should be aroung 1.5V Pk to Pk. Also note that Q1 as per V3 layout is 2SC2570A or similar high Ft device having a different pin out. Rest all are BC547s.
73
Rahul VU3WJM
Arjan <arjan_holland@y...> wrote:
help
Hello all sorry my engels is not so good. only I have a problem
and I know not how I this on must discharge. I have now my BITX20 built on the pcb ver3.the rx is excellent but I have as I tune various squeak flutes that about it do not hear +- 4mhz +-4.2 mhz +-4.3… Who can me help whit this problem ????
Arjan
SPONSORED LINKS
Ham radio antenna Ham radio Ham radio sales Asian tsunami disaster Ham radio store
---------------------------------
YAHOO! GROUPS LINKS
Visit your group "BITX20" on the web.
To unsubscribe from this group, send an email to:
BITX20-unsubscribe@...
Your use of Yahoo! Groups is subject to the Yahoo! Terms of
Service.
---------------------------------
Send instant messages to your online friends
|
Re: various squeak flutes that about it do not hear +- 4mhz +-4.2 mhz +-4.3…
Hi!
?
Check VFO and BFO injection levels. It should be aroung 1.5V Pk to Pk. Also note that Q1 as per V3 layout is 2SC2570A or similar high Ft device having a different pin out. Rest all are BC547s.
?
73
?
Rahul VU3WJM
Arjan wrote:
help
Hello all sorry my engels? is not so good. only I have a problem and I
know not how I this on must discharge. I have now my BITX20 built on
the pcb ver3.the rx is excellent but I have as I tune various squeak
flutes that about it do not hear +- 4mhz +-4.2 mhz +-4.3??? Who can me
help whit this problem ?????
Arjan
Send instant messages to your online friends http://uk.messenger.yahoo.com
|
Re: FA: Matched SSB/CW sets of 10.7 Mhz IF crystals.
Lee Dakin wrote:
I am interested in a set for SSB at 10.7MHz.
Is apersonal check O.K.? or would you like a postal money order?
73
Lee? WA1CQN
Hi,
I just won on Ebay a large lot of 10.7 Mhz Crystals.? If anyone wants
to use this intermediate frequency I can provide a matched set of 4
plus a 5th for BFO.?? This IF would be useful primarly in ITU region
2, where WWB makes it impossible to use 10 Mhz as the IF.
I am willing to sell matched sets on the following terms:
1)? I will only sell to people in North or South America, exclusive of
Cuba and other countries that US citizens are forbidden to sell to.
2)? You will be getting 4 matched crystals, plus a fifth unmatched
crystal for BFO.
3)? Before you send money I will send you an invoice containing exact
measurements for each crystal, including the BFO crystal.?? This
invoice also contains the exact cost of postage to your destination
depending on available carrier.? You are responsible for your own
customs duties, import fees, and excise taxes.
4)? Each crystal in the package of 5 will be packed in its own bag
marked with its frequency measurement.
5)? SSB matching will be within 100 hz of average frequency for
matched set of 4 where each crystal is measured in series with a 33 pF
silver mica capacitor having 20% tolerance.
6)? CW matching will be withing 30 hz of average frequency for matched
set of 4 where each crystal is measured in series with a 33 pF silver
mica capacitor having 20% tolerance.
7)? Each crystal matched to SSB specifications would cost $2.00 USD,
so a set of 4 will cost you $8.00 USD.
8)? Each crystal matched to CW specifications would cost $5.00 USD, so
a set of 4 will cost you $20.00 USD.?
9)? Your unmatched BFO crystal comes at no extra cost.
10) Payment shall be made by PayPal, US postal money order, or
International Reply Coupons.? Personal checks not accepted.? No
exceptions.
I don't believe this is an unreasonable cost for my time and labor to
handmatch crystals, to spare somebody else the same effort of having
to buy a lot and sift through them with a test oscillator and
frequency counter.
If the majority of you disagree, please tell me and I will reconsider.?
Thanks,
The Eternal Squire
__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
Just got back from Labor Day vacation, I'll get back to you.? Hold off
on payment till
I get you a set measured for you and will post a set of numbers peer
reviewed by this forum.
The Eternal Squire
|
various squeak flutes that about it do not hear +- 4mhz +-4.2 mhz +-4.3…
help
Hello all sorry my engels is not so good. only I have a problem and I
know not how I this on must discharge. I have now my BITX20 built on
the pcb ver3.the rx is excellent but I have as I tune various squeak
flutes that about it do not hear +- 4mhz +-4.2 mhz +-4.3… Who can me
help whit this problem ????
Arjan
|
Re: FA: Matched SSB/CW sets of 10.7 Mhz IF crystals.
I am interested in a set for SSB at 10.7MHz.
Is apersonal check O.K.? or would you like a postal money order?
73
Lee? WA1CQN
eternalesquire wrote:
Hi,
I just won on Ebay a large lot of 10.7 Mhz Crystals.? If anyone wants
to use this intermediate frequency I can provide a matched set of 4
plus a 5th for BFO.?? This IF would be useful primarly in ITU region
2, where WWB makes it impossible to use 10 Mhz as the IF.
I am willing to sell matched sets on the following terms:
1)? I will only sell to people in North or South America, exclusive of
Cuba and other countries that US citizens are forbidden to sell to.
2)? You will be getting 4 matched crystals, plus a fifth unmatched
crystal for BFO.
3)? Before you send money I will send you an invoice containing exact
measurements for each crystal, including the BFO crystal.?? This
invoice also contains the exact cost of postage to your destination
depending on available carrier.? You
are responsible for your own
customs duties, import fees, and excise taxes.
4)? Each crystal in the package of 5 will be packed in its own bag
marked with its frequency measurement.
5)? SSB matching will be within 100 hz of average frequency for
matched set of 4 where each crystal is measured in series with a 33 pF
silver mica capacitor having 20% tolerance.
6)? CW matching will be withing 30 hz of average frequency for matched
set of 4 where each crystal is measured in series with a 33 pF silver
mica capacitor having 20% tolerance.
7)? Each crystal matched to SSB specifications would cost $2.00 USD,
so a set of 4 will cost you $8.00 USD.
8)? Each crystal matched to CW specifications would cost $5.00 USD, so
a set of 4 will cost you $20.00 USD.?
9)? Your unmatched BFO crystal comes at no extra cost.
10) Payment shall be made by PayPal, US postal money order,
or
International Reply Coupons.? Personal checks not accepted.? No
exceptions.
I don't believe this is an unreasonable cost for my time and labor to
handmatch crystals, to spare somebody else the same effort of having
to buy a lot and sift through them with a test oscillator and
frequency counter.
If the majority of you disagree, please tell me and I will reconsider.?
Thanks,
The Eternal Squire
__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com
|
Re: BITX Control software final version
Just the sort
of?opinion?that?enhances amateur radio......
You must let everyone know what it
is like to be clever.
I'm surprised you actually
condescend to use a PC for communicating to the outside world.
?
Terry
?
G3VMT
toggle quoted message
Show quoted text
----- Original Message -----
Sent: Tuesday, August 30, 2005 10:06
PM
Subject: Re: [BITX20] BITX Control
software final version
In my opinion the finest?software for
controlling QRP or
any other radio equipment?costs nothing and
was developed thousands of years ago - its called the human
brain!
No wonder computer programs are called
"soft"ware,
most?render the users' brain
soft!
?
Theo
?
|
