Re: QRSS TX Mod and Japanese QRSS situation

"Yannick"

Hide,

I can turn on a grabber on 30m if you want tonight from around 1500z to 0000z monday.
Drop me a direct e-mail if you are ok.

73,
Yan - XV4TUJ

Show quoted text

--- In QRPLabs@..., "Hide" <qrper72@...> wrote:

Hi friends,

I've uploaded my mod. of the QRSS TX kit.
I added the BCD Switch to select the 8-transmitting mode.
It works fine without adding the pull down resisters.
Please see the photos into "Photos -> JA9MAT".

BTW...

I use the small 5V-DC Switching Power Module and got about 200mW
at peak but now down to 100mW.A 2N700 has a little hot but seems
no problem for 24hours work.

My antenna is G5RV tuned to 30m band with tuner.
I QRV last night but no grabber response to me...

A 100mW is so small to be received in Europe and even in Oceania.
No JA or Asian station QRV on QRSS mode here so it seems difficult
to confirm my signal.I must confirm my signal by myself.

I'm envious with European QRSS staions.
So many QRSS signals appears into the grabber display.
I wish if I were you. hi.

I have another QRSS transmitter it's out power is 1.5W and
also 5W with adding the IRF510 linear amplifier.
But it's not suitable for continuous carrier transmission.
It used for QRSS3,6 and DFCW mode.

Thanks for nice kit supply,73.

ja9mat Hidehiko.

QRSS TX Mod and Japanese QRSS situation

"Hide"

#177

Hi friends,

I've uploaded my mod. of the QRSS TX kit.
I added the BCD Switch to select the 8-transmitting mode.
It works fine without adding the pull down resisters.
Please see the photos into "Photos -> JA9MAT".

BTW...

I use the small 5V-DC Switching Power Module and got about 200mW
at peak but now down to 100mW.A 2N700 has a little hot but seems
no problem for 24hours work.

My antenna is G5RV tuned to 30m band with tuner.
I QRV last night but no grabber response to me...

A 100mW is so small to be received in Europe and even in Oceania.
No JA or Asian station QRV on QRSS mode here so it seems difficult
to confirm my signal.I must confirm my signal by myself.

I'm envious with European QRSS staions.
So many QRSS signals appears into the grabber display.
I wish if I were you. hi.

I have another QRSS transmitter it's out power is 1.5W and
also 5W with adding the IRF510 linear amplifier.
But it's not suitable for continuous carrier transmission.
It used for QRSS3,6 and DFCW mode.

Thanks for nice kit supply,73.

ja9mat Hidehiko.

Re: Supply current question

"Yannick"

#176

Hi.

Thanks for the references you gave.
I measure my DC consumption and it is around 137mA at 5,5V with 100mW RF out.
That confirm my 2N7000 could draw more than expected and why it is hotter than I'd like it to be...

73,
Yan.

Show quoted text

--- In QRPLabs@..., "g4ilo" <julian.g4ilo@...> wrote:

Mine draws 65 - 70mA at 5V for 50mW out. When I increased the power to just below 100mW (which was the peak in my case) it increased to 120mA. Increasing the bias voltage beyond that it was more current for less power out. I settled for 50mW output to get better battery life.

Julian, G4ILO

--- In QRPLabs@..., "Neil" <g7aqk.uk@> wrote:

I have now managed to complete my 30m QRSS kit and was wondering how much current they should draw from the supply. Mine pulls roughly 100mA from 4 x AA batteries in series. Does that sound about right?

Neil

Re: Supply current question

"g4ilo"

#175

Mine draws 65 - 70mA at 5V for 50mW out. When I increased the power to just below 100mW (which was the peak in my case) it increased to 120mA. Increasing the bias voltage beyond that it was more current for less power out. I settled for 50mW output to get better battery life.

Julian, G4ILO

Show quoted text

--- In QRPLabs@..., "Neil" <g7aqk.uk@...> wrote:

I have now managed to complete my 30m QRSS kit and was wondering how much current they should draw from the supply. Mine pulls roughly 100mA from 4 x AA batteries in series. Does that sound about right?

Neil

Re: Final amplifier Bias

"Yannick"

#174

Hi Stephen,

Yes I checked R6 already and it is 6k8.
R8 is closer to 1,8K than the stated 2,2k in the schematic.
The closer potentiometer I have in my spare box is 5k.

I tried to had 1k to R6 but without success.
Then I realised that potentiometer is turned all the way down to 0V.
I tried to disconnect R6 and as expected no change.
Measure rectified voltage with my RF probe is around 3V and the FET is getting hot...
Perhaps my probe is not accurate but I am sure the power does not exceed 200mW since it is the lowest power I can measure with my Wattmeter and the needle is not moving at all.

Thanks for your help.
73, Yan -XV4TUJ.

Show quoted text

--- In QRPLabs@..., Stephen Farthing <squirrox@...> wrote:

Hi Yan,

Can you check that R6 is 6K8 please.

Regards,

Steve

--
It is vain to do with more that which can be done with less.

Re: Supply current question

"Mike"

#173

Mine draw around 85 mA at 5 volts.
Since you are at 6+ volts, I'd say your current is normal.
Mike  n0qbh

Show quoted text

--- In QRPLabs@..., "Neil" <g7aqk.uk@...> wrote:

I have now managed to complete my 30m QRSS kit and was wondering how much current they should draw from the supply. Mine pulls roughly 100mA from 4 x AA batteries in series. Does that sound about right?

Neil

Supply current question

"Neil"

#172

I have now managed to complete my 30m QRSS kit and was wondering how much current they should draw from the supply. Mine pulls roughly 100mA from 4 x AA batteries in series. Does that sound about right?

Neil

Final amplifier Bias

Stephen Farthing

#171

Hi Yan,

Can you check that R6 is 6K8 please.

Regards,

Steve

--
It is vain to do with more that which can be done with less.

Re: [Knightsqrss] 80M SV beacon

Arv Evans

#170

开云体育

Hans...& others

These QRSS beacons (and the grabbers) seem to be popping up on many bands
and on many frequencies.? This seems to suggest that we each need QRSS Beacon
transmitters for all bands, and for many frequencies.

That then suggests that the Keyer chip could be installed in a separate chassis
and used as a controller for any, or all, of several different QRSS transmitters.

Arv K7HKL
_._

Show quoted text

-------- Original Message --------

 On 10/20/2010 4:13 AM, EMMANOUIL MANTZARAS wrote:
> Hallo Knights
>
> 500 mw at 3.500863Mhz precision carrier and QRSS 6 "BKE" every 30 min.
> QRSS 6 also at 7000863Mhz beacon
> Details on the clipboard
> 73 de sv1bke
>
>
>
>
>
> _______________________________________________
> Knightsqrss mailing list
> Knightsqrss@...
> 
> Knightsqrss clipboard 
> Knightsqrss blog 
>
I'll start listening for you around your sunrise.  I also plan to be 
active on 80 in about 1 month with my QRS Labs kit which still needs to 
be soldered up.

73 bill w4hbk



_______________________________________________
Knightsqrss mailing list
Knightsqrss@...

Knightsqrss clipboard 
Knightsqrss blog

Keyer chip clarification

Stephen Farthing

#169

Hi all,

I lied about the pull ups....i really meant pull downs...sorry.

Steve

--
It is vain to do with more that which can be done with less.

Keyer chip clarification

"hanssummers2000"

#168

Hi all

Just some comments regarding the recent keyer chip thread:

1) Do NOT use 10K pull-ups! It won't work! You need pull-DOWN's! Not up! If you see this problem, then you can connect a 10K resistor between each of pins 5, 6, 7 and ground. Alternatively, if you wish you can ground each of the pins 5, 6 and 7 which you have not linked to Vcc.

2) Regarding the 12wpm: The intended function of the keyer is that you will get a 12wpm callsign once when you power up, followed by QRSS (at whatever speed you have selected). You then get the 12wpm callsign again once every approximately 10 minutes. This was intended as a full speed callsign identifier every 10 minutes, but only really useful if the keyer is used in a plain on/off keyed QRSS system rather than an FSK/CW system. So don't get alarmed when you see the 12wpm ident at switch on! This is entirely normal!

3) The variation in audio tone of a few 10's of Hz which Steve mentioned, is because the AVR is clocked only using its internal RC-based system clock at 9.6MHz. The stability of this clock source, and the variation between devices, is several percent. So both the audio tone, and the precise timing, can vary by a few percent.

Any other questions please shout!

73 Hans G0UPL

Re: Funny thing happening to keyer chip

Paul Maciel

#167

Hello Neil and Paul,

I had the same problem. Once I grounded the unused pins as Hans suggested all was fine.

73,
---Paul AK1P

Show quoted text

From: PaulG
To: QRPLabs@...
Sent: Sun, October 17, 2010 8:10:24 PM
Subject: [QRPLabs] Re: Funny thing happening to keyer chip

Neil

I have gotten the same thing with my PIC keyer chip. Hans suggested grounding all the unused pins on the PIC. With the jumper for 3Sec dots it seems to send the call at 12 WPM once every few min then goes back to QRSS. I have not grounded the unsed pins yet.

Paul K3PG 10.140.070

--- In QRPLabs@..., "Neil" wrote:
>
> I just finished putting my 30m QRSS kit together yesterday evening (certainly more interesting than X Factor) and every thing seems to be functioning. I have run the keyer in its default 12 WPM setting and it rattles through my callsign once at the selected speed. After that it reverts to the 6 second dit rate. This is just an observation as I do not intend to run at 12WPM but was wondering if there may be a bug in the program. I will try it at other speeds to see what happens and will also try another chip that Hans prepared earlier this year.
>
> Neil
> G7AQK
>

Re: Funny thing happening to keyer chip

"PaulG"

#166

Neil

I have gotten the same thing with my PIC keyer chip.  Hans suggested grounding all the unused pins on the PIC.  With the jumper for 3Sec dots it seems to send the call at 12 WPM once every few min then goes back to QRSS.  I have not grounded the unsed pins yet.

Paul K3PG 10.140.070

Show quoted text

--- In QRPLabs@..., "Neil" <g7aqk.uk@...> wrote:

I just finished putting my 30m QRSS kit together yesterday evening (certainly more interesting than X Factor) and every thing seems to be functioning. I have run the keyer in its default 12 WPM setting and it rattles through my callsign once at the selected speed. After that it reverts to the 6 second dit rate. This is just an observation as I do not intend to run at 12WPM but was wondering if there may be a bug in the program. I will try it at other speeds to see what happens and will also try another chip that Hans prepared earlier this year.

Neil
G7AQK

Re: Funny thing happening to keyer chip

Stephen Farthing

#165

Hi guys,

I think there is some variation in the ATTiny13 keyer chips. having programmed over 150 of them with the software using exactly the same programming arrangement I would say 1 in 10 chips exhibits this behaviour (and as an aside the AF frequency in 12wpm mode also varies by some 10s of Hz between chips). Some builders have also experienced the same issue when using homebrew PSUs rather than the mobile phone (Nokia) chargers that Hans and I use...the 10k pullups should solve the issue.

Regards,

Steve

Show quoted text

On 17 October 2010 19:53, Nigel Evans <nigel.m0nde@...> wrote:

?

All,

?

This is very interesting because I had same issue.? I was also just monitoring my signal and mine just set the NDE of M0NDE fast then carried on ate qrss.? Please confirm connection you made Arv, did you just put a resistor in place of a single link?

73 Nigel M0NDE

?

?

On 17 October 2010 19:45, Arv Evans <arvid.evans@...> wrote:

?

Neil G7AQK

I had to add 10K pull-up resistors to the speed selection jumpers.? This solved my
problems with unreliable setting of speed, and other strange behavior.

Arv K7HKL
_._

On 10/17/2010 02:22 AM, Neil wrote:
?

I just finished putting my 30m QRSS kit together yesterday evening (certainly more interesting than X Factor) and every thing seems to be functioning. I have run the keyer in its default 12 WPM setting and it rattles through my callsign once at the selected speed. After that it reverts to the 6 second dit rate. This is just an observation as I do not intend to run at 12WPM but was wondering if there may be a bug in the program. I will try it at other speeds to see what happens and will also try another chip that Hans prepared earlier this year.

Neil
G7AQK

--
73 de Nigel Evans
M0NDE QTH Dover

Check out details of the Dover Radio Rally 2011

Whitfield Village Hall

--
It is vain to do with more that which can be done with less.

Re: Funny thing happening to keyer chip

Nigel Evans

#164

All,

?

This is very interesting because I had same issue.? I was also just monitoring my signal and mine just set the NDE of M0NDE fast then carried on ate qrss.? Please confirm connection you made Arv, did you just put a resistor in place of a single link?

73 Nigel M0NDE

?

On 17 October 2010 19:45, Arv Evans <arvid.evans@...> wrote:

Show quoted text

?

Neil G7AQK

I had to add 10K pull-up resistors to the speed selection jumpers.? This solved my
problems with unreliable setting of speed, and other strange behavior.

Arv K7HKL
_._

On 10/17/2010 02:22 AM, Neil wrote:
?

I just finished putting my 30m QRSS kit together yesterday evening (certainly more interesting than X Factor) and every thing seems to be functioning. I have run the keyer in its default 12 WPM setting and it rattles through my callsign once at the selected speed. After that it reverts to the 6 second dit rate. This is just an observation as I do not intend to run at 12WPM but was wondering if there may be a bug in the program. I will try it at other speeds to see what happens and will also try another chip that Hans prepared earlier this year.

Neil
G7AQK

--
73 de Nigel Evans
M0NDE QTH Dover

Check out details of the Dover Radio Rally 2011

Whitfield Village Hall

Re: Funny thing happening to keyer chip

Arv Evans

#163

开云体育

Neil G7AQK

I had to add 10K pull-up resistors to the speed selection jumpers.? This solved my
problems with unreliable setting of speed, and other strange behavior.

Arv K7HKL
_._

On 10/17/2010 02:22 AM, Neil wrote:

Show quoted text

?

I just finished putting my 30m QRSS kit together yesterday evening (certainly more interesting than X Factor) and every thing seems to be functioning. I have run the keyer in its default 12 WPM setting and it rattles through my callsign once at the selected speed. After that it reverts to the 6 second dit rate. This is just an observation as I do not intend to run at 12WPM but was wondering if there may be a bug in the program. I will try it at other speeds to see what happens and will also try another chip that Hans prepared earlier this year.

Neil
G7AQK

Funny thing happening to keyer chip

"Neil"

#162

I just finished putting my 30m QRSS kit together yesterday evening (certainly more interesting than X Factor) and every thing seems to be functioning. I have run the keyer in its default 12 WPM setting and it rattles through my callsign once at the selected speed. After that it reverts to the 6 second dit rate. This is just an observation as I do not intend to run at 12WPM but was wondering if there may be a bug in the program. I will try it at other speeds to see what happens and will also try another chip that Hans prepared earlier this year.

Neil
G7AQK

Re: Low power SWR measurement

"Neil"

#161

Thanks for the links Arv. The current indicator certainly looks simple enough.

Neil

Show quoted text

--- In QRPLabs@..., Arv Evans <arvid.evans@...> wrote:

Neil G7AQK

These URLs might help:

<>

<>

Arv K7HKL

On 10/13/2010 03:33 PM, Neil wrote:

Does anyone have an easy method of matching your antenna to the 30m
QRSS beacon? My SWR meter is not sensitive enough to work with the
beacon kit and my QRO rig does not do 30m, but I do have a 30m receiver.

Neil
G7AQK

Re: Low power SWR measurement

Arv Evans

#160

开云体育

Neil G7AQK

These URLs might help:

??? ???

??? ???

Arv K7HKL

On 10/13/2010 03:33 PM, Neil wrote:

Show quoted text

?

Does anyone have an easy method of matching your antenna to the 30m QRSS beacon? My SWR meter is not sensitive enough to work with the beacon kit and my QRO rig does not do 30m, but I do have a 30m receiver.

Neil
G7AQK

Low power SWR measurement

"Neil"

#159

Does anyone have an easy method of matching your antenna to the 30m QRSS beacon? My SWR meter is not sensitive enough to work with the beacon kit and my QRO rig does not do 30m, but I do have a 30m receiver.


Neil
G7AQK