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Re: 1pps signal level requirements on Ultimate QRSS Beacon

Stephen Farthing
 

Hi Tony,

The way to find out if the 1PPS is working is to select TEST mode and
wait a little time. You should see a frequency counter display which
uses the 1pps as a timebase.

However, with GPS ON, the beacon gets the time for the real time clock
and derives the LOCATION from the NMEA string passed to it from the
GPS. The 1PPS is not used to provide time for the real time clock. So
if you only have a 1PPS input the RTC and the Location will not be
valid.

Hope this explains things. I guess hans might consider a change to the
firmware at some stage to allow you to select a 1 PPS source separate
from a GPS, e.g. a DCF77 long wave clock, or for the well heeled with
a taste for precision, a Rubidium frequency standard.

73s Steve

--
Please Mr Coe, I cannot attend sports day for the next two weeks. My
mum says too much advertising is bad for me ;-)
1pps signal level requirements on Ultimate QRSS Beacon

"TONY_VOLPE"
 

I've been experimenting with other means of inputting a clock signal to the MCU on the Ultimate QRSS Beacon without using GPS. I have a couple of questions for Hans or Stephen, if they have time.

If a user wanted to input a 1pps clock signal derived from a source other than GPS -

1. Does the 'GPS ON' option need to be enabled for the signal to be used by the MCU, or is any 1 htz signal automatically taken account of on the 1pps connection regardless of the GPS option being enabled?

2. What voltage level is required on the 1pps for it to be taken notice of by the MCU?

I have presented a 1htz pulse at the 1pps connection, but it is not having any impact. If I enable the GPS ON option, the kit just sits and does nothing.

Many thanks for any hints you can give me.

G0BZB op Tony
Re: Ultimate QRSS kit firmware update

"G1IVG"
 

I'm also on V. 1.00, it's built and just needs to be boxed and GPS added as I have found the standard internal clock loses about 2 seconds every 12 hours so for WSPR it will benefit from the addition of GPS. I'm also more than happy to pay towards the postage etc.

73 de Colin G1IVG

--- In QRPLabs@..., "Philip" <pcteee@...> wrote:

Great news guys thank you...

I've ordered one, mine has version 1.00 showing on the display..
I put ?3 on the Paypal amount to cover the postage as I still think
we all have a real bargain here troubles aside..
Hope it doesn't hit you too badly and thanks for your continued
supply of excellent kits...

Philip G4JVF

--- In QRPLabs@..., Hans Summers <hans.summers@> wrote:

Hello all Ultimate QRSS kit builders,

As many of you know, unfortunately a few bugs crept into the original
firmware version on the chip. Steve G0XAR and Hans G0UPL were mortified
that these bugs escaped our testing and apologise for the inconvenience. On
the other hand it's a complex piece of firmware, there's a lot of
functionality in there which can be used in different ways. So perhaps we
were too optimistic to expect it to go smoothly. Lessons learned. We have
now corrected and tested all the known bugs and are ready to rectify your
problems.

There were actually TWO serious bugs:

1) bug where the beacon could stop transmitting after 1 hour in WSPR mode
or QRSS modes using stacking
2) bug where the on/off keying was in some cases routed to pin 16 instead
of pin 14 of the processor, so the kit was always in key-down state

All the other changes are either minor enhancements or cosmetic
improvements.

v1.00 was the original version. The new versions are v1.01, v1.02 and
v1.03. The changes are identified as below. Since the bugs were being
discovered and corrected as we went along, the version you have could be
any of these versions. You will know what version you have, if you watch
the LCD display in the first few seconds after powering the board.

v1.01: bug fix to the "Frame" parameter (beacon can sometimes stop
transmitting after 1 hour in WSPR mode and "frame" QRSS modes)
v1.01: Lowered the minimum frequency from 1,000,000 Hz to 450,000 Hz
v1.02: bug fix correcting the operation of the on/off keying in some modes
v1.03: Added ability to choose different cursor types on the display
v1.03: improved GPS stabilisation algorithm
v1.03: cosmetic bug fix for baud rate setting so it only accepts numeric
characters
v1.03: cosmetic bug fix with the display when waiting for the start of the
transmission in "frame" mode – the

For anybody who has been affected by a bug, we will send an updated chip
(version 1.03) free of charge. You can have a free upgrade if you have
v1.00 or v1.01 and have been affected by a bug (the changes in v1.03 being
cosmetic only).

In order to get the free upgrade please go to the shop page


If you want to order other products at the same time, then please choose
"v1.03 FREE upgrade", it costs ?0.00. Then you pay for your other products
and shipping as normal. Please enter your original order number in the
comment field of the order form.

If you want to just get the free upgrade chip (no other products from the
shop), then please choose "v1.03 FREE upgrade + FREE shipping", and proceed
to checkout. The shipping cost is ?0.01 (the lowest the shop software would
allow!) for any location worldwide. If the ?0.01 bothers you please let us
know, Steve will refund your ?0.01 PayPal amount. Please enter your
original order number in the comment field of the order form.

Notes:

a) Some people have noticed that the keying appears on the microcontroller
and have cut the trace to pin 14, adding instead a wire to pin 16. If you
order the v1.03 upgrade to fix a different issue, then you'll need to
connect it back to pin 14 again, sorry.

b) Hans is going to write a page with a lot more information about
connecting and using a GPS module next. Steve has successfully used a
Sparkfun GPS so we are able to recommend that, and we will also list other
GPS modules that we have heard that others have used successfully. The page
will list the communications settings to use for each GPS module and will
also provide details of the GPS frequency correcting algorithm being used.

Thanks for your patience

73 Hans G0UPL & Steve G0XAR
Re: GPS recommendations

Tony Volpe
 

LOL - only joking. ?:)

I've been messing about with a 'poor man's' time reference, just for a lark. I took an old cheapo quartz analogue clock apart and combined the coil outputs to make a 1 htz reference pulse. I'm not sure what level it is at because the pulse is too short for my multimeter to measure it, but it flashes an led at 1htz. I have fed that into the 1pps connection on the board and linked the two earths. It has got to be more accurate than the clock on the qrss kit as it keeps time to about a second or so a week, whereas the kit loses time to about three seconds a day. It is a truly horrible lash up with a couple of transistors with full lead lengths and resistors likewise connected to the electronic clock module...... Not like yours at all, but it is after all a prototype. :))


We shall see if it works. I am not sure whether the kit will only take notice of that 1pps input if GPS is enabled. I have no idea. The level might be too low as well.

Cheers

Tony


On 31 July 2012 17:08, Philip <pcteee@...> wrote:
?

Can't do yours Tony, I've run out of coffee jar lids ;)

Philip G4JVF



--- In QRPLabs@..., "TONY_VOLPE" wrote:
>
> Oh htat looks the business Philip. Very nicely done. Mine is a total 'lash up' by comparison. You really thought about how it would be boxed before you started making that. Next time I am going to 'build' a kit, I'll send it to you and when it's done, you can send it back to me. :)
>
> Tony G0BZB
>
> --- In QRPLabs@..., "Philip" wrote:
> >
> >
> > Pictures of my test rig in Photos under G4JVF album
> >
> > Philip G4JVF
> >
> >
> > --- In QRPLabs@..., "Philip" wrote:
> > >
> > > Tested my module yesterday for a few hours on 30 and it worked fine,
> > > FSKCW GPS locked.
> > >
> > > One of these :-
> > >
> > >
> > > Settings match the QRSS kit's default GPS values..
> > > Has an SMA connector for an external GPS antenna..
> > > It's 3.3volts so needs a regulator on the kit's 5volt line.
> > > 22 pin socket is a tad small but hookup wire can be pushed into
> > > the pin holes.
> > >
> > > Pretty sensitive, works indoors and fairly quick to lock in..
> > >
> > >
> > > Philip G4JVF
> > >
> > > --- In QRPLabs@..., "Stephen" wrote:
> > > >
> > > > Guys,
> > > >
> > > > FWIW I used an EM-406A for testing the GPS functionality. See for details. They are widely available from Sparkfun and their distributors.
> > > >
> > > > In the UK they are stocked by Proto-pic
> > > >
> > > > You will need 1 k ohm pull up resistors between the TX and Vcc and the PPS and Vcc.
> > > >
> > > > Regards Steve G0XAR
> > > >
> > >
> >
>
Delays to orders for Ultimate Beacons

"Stephen"
 

Guys,

I have been holding back on shipping orders because of the firmware issues mentioned in previous posts. I'll be spending the next few days sending them out now that we have squashed the known bugs. Thanks for your patience,

73 Steve
Re: GPS recommendations

"Philip"
 

Can't do yours Tony, I've run out of coffee jar lids ;)


Philip G4JVF

--- In QRPLabs@..., "TONY_VOLPE" <tony.volpe.1951@...> wrote:

Oh htat looks the business Philip. Very nicely done. Mine is a total 'lash up' by comparison. You really thought about how it would be boxed before you started making that. Next time I am going to 'build' a kit, I'll send it to you and when it's done, you can send it back to me. :)

Tony G0BZB

--- In QRPLabs@..., "Philip" <pcteee@> wrote:


Pictures of my test rig in Photos under G4JVF album

Philip G4JVF


--- In QRPLabs@..., "Philip" <pcteee@> wrote:

Tested my module yesterday for a few hours on 30 and it worked fine,
FSKCW GPS locked.

One of these :-


Settings match the QRSS kit's default GPS values..
Has an SMA connector for an external GPS antenna..
It's 3.3volts so needs a regulator on the kit's 5volt line.
22 pin socket is a tad small but hookup wire can be pushed into
the pin holes.

Pretty sensitive, works indoors and fairly quick to lock in..


Philip G4JVF

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

Guys,

FWIW I used an EM-406A for testing the GPS functionality. See for details. They are widely available from Sparkfun and their distributors.

In the UK they are stocked by Proto-pic .

You will need 1 k ohm pull up resistors between the TX and Vcc and the PPS and Vcc.

Regards Steve G0XAR
Re: Ultimate QRSS kit firmware update

"Philip"
 

Great news guys thank you...

I've ordered one, mine has version 1.00 showing on the display..
I put ?3 on the Paypal amount to cover the postage as I still think
we all have a real bargain here troubles aside..
Hope it doesn't hit you too badly and thanks for your continued
supply of excellent kits...

Philip G4JVF

--- In QRPLabs@..., Hans Summers <hans.summers@...> wrote:

Hello all Ultimate QRSS kit builders,

As many of you know, unfortunately a few bugs crept into the original
firmware version on the chip. Steve G0XAR and Hans G0UPL were mortified
that these bugs escaped our testing and apologise for the inconvenience. On
the other hand it's a complex piece of firmware, there's a lot of
functionality in there which can be used in different ways. So perhaps we
were too optimistic to expect it to go smoothly. Lessons learned. We have
now corrected and tested all the known bugs and are ready to rectify your
problems.

There were actually TWO serious bugs:

1) bug where the beacon could stop transmitting after 1 hour in WSPR mode
or QRSS modes using stacking
2) bug where the on/off keying was in some cases routed to pin 16 instead
of pin 14 of the processor, so the kit was always in key-down state

All the other changes are either minor enhancements or cosmetic
improvements.

v1.00 was the original version. The new versions are v1.01, v1.02 and
v1.03. The changes are identified as below. Since the bugs were being
discovered and corrected as we went along, the version you have could be
any of these versions. You will know what version you have, if you watch
the LCD display in the first few seconds after powering the board.

v1.01: bug fix to the "Frame" parameter (beacon can sometimes stop
transmitting after 1 hour in WSPR mode and "frame" QRSS modes)
v1.01: Lowered the minimum frequency from 1,000,000 Hz to 450,000 Hz
v1.02: bug fix correcting the operation of the on/off keying in some modes
v1.03: Added ability to choose different cursor types on the display
v1.03: improved GPS stabilisation algorithm
v1.03: cosmetic bug fix for baud rate setting so it only accepts numeric
characters
v1.03: cosmetic bug fix with the display when waiting for the start of the
transmission in "frame" mode – the

For anybody who has been affected by a bug, we will send an updated chip
(version 1.03) free of charge. You can have a free upgrade if you have
v1.00 or v1.01 and have been affected by a bug (the changes in v1.03 being
cosmetic only).

In order to get the free upgrade please go to the shop page


If you want to order other products at the same time, then please choose
"v1.03 FREE upgrade", it costs ?0.00. Then you pay for your other products
and shipping as normal. Please enter your original order number in the
comment field of the order form.

If you want to just get the free upgrade chip (no other products from the
shop), then please choose "v1.03 FREE upgrade + FREE shipping", and proceed
to checkout. The shipping cost is ?0.01 (the lowest the shop software would
allow!) for any location worldwide. If the ?0.01 bothers you please let us
know, Steve will refund your ?0.01 PayPal amount. Please enter your
original order number in the comment field of the order form.

Notes:

a) Some people have noticed that the keying appears on the microcontroller
and have cut the trace to pin 14, adding instead a wire to pin 16. If you
order the v1.03 upgrade to fix a different issue, then you'll need to
connect it back to pin 14 again, sorry.

b) Hans is going to write a page with a lot more information about
connecting and using a GPS module next. Steve has successfully used a
Sparkfun GPS so we are able to recommend that, and we will also list other
GPS modules that we have heard that others have used successfully. The page
will list the communications settings to use for each GPS module and will
also provide details of the GPS frequency correcting algorithm being used.

Thanks for your patience

73 Hans G0UPL & Steve G0XAR
Ultimate QRSS kit firmware update

Hans Summers
 


Hello all Ultimate QRSS kit builders,

As many of you know, unfortunately a few bugs crept into the original firmware version on the chip. Steve G0XAR and Hans G0UPL were mortified that these bugs escaped our testing and apologise for the inconvenience. On the other hand it's a complex piece of firmware, there's a lot of functionality in there which can be used in different ways. So perhaps we were too optimistic to expect it to go smoothly. Lessons learned. We have now corrected and tested all the known bugs and are ready to rectify your problems.

There were actually TWO serious bugs:

1) bug where the beacon could stop transmitting after 1 hour in WSPR mode or QRSS modes using stacking
2) bug where the on/off keying was in some cases routed to pin 16 instead of pin 14 of the processor, so the kit was always in key-down state

All the other changes are either minor enhancements or cosmetic improvements.

v1.00 was the original version. The new versions are v1.01, v1.02 and v1.03. The changes are identified as below. Since the bugs were being discovered and corrected as we went along, the version you have could be any of these versions. You will know what version you have, if you watch the LCD display in the first few seconds after powering the board.

v1.01: bug fix to the “Frame” parameter (beacon can sometimes stop transmitting after 1 hour in WSPR mode and "frame" QRSS modes)
v1.01: Lowered the minimum frequency from 1,000,000 Hz to 450,000 Hz
v1.02: bug fix correcting the operation of the on/off keying in some modes
v1.03: Added ability to choose different cursor types on the display
v1.03: improved GPS stabilisation algorithm
v1.03: cosmetic bug fix for baud rate setting so it only accepts numeric characters
v1.03: cosmetic bug fix with the display when waiting for the start of the transmission in “frame” mode – the?

For anybody who has been affected by a bug, we will send an updated chip (version 1.03) free of charge. You can have a free upgrade if you have v1.00 or v1.01 and have been affected by a bug (the changes in v1.03 being cosmetic only).

In order to get the free upgrade please go to the shop page???

If you want to order other products at the same time, then please choose "v1.03 FREE upgrade", it costs ?0.00. Then you pay for your other products and shipping as normal. Please enter your original order number in the comment field of the order form.

If you want to just get the free upgrade chip (no other products from the shop), then please choose "v1.03 FREE upgrade + FREE shipping", and proceed to checkout. The shipping cost is ?0.01 (the lowest the shop software would allow!) for any location worldwide. If the ?0.01 bothers you please let us know, Steve will refund your ?0.01 PayPal amount.?Please enter your original order number in the comment field of the order form.

Notes:

a) Some people have noticed that the keying appears on the microcontroller and have cut the trace to pin 14, adding instead a wire to pin 16. If you order the v1.03 upgrade to fix a different issue, then you'll need to connect it back to pin 14 again, sorry.

b) Hans is going to write a page with a lot more information about connecting and using a GPS module next. Steve has successfully used a Sparkfun GPS so we are able to recommend that, and we will also list other GPS modules that we have heard that others have used successfully. The page will list the communications settings to use for each GPS module and will also provide details of the GPS frequency correcting algorithm being used.?

Thanks for your patience

73 Hans G0UPL & Steve G0XAR
?
Re: GPS recommendations

"TONY_VOLPE"
 

Oh htat looks the business Philip. Very nicely done. Mine is a total 'lash up' by comparison. You really thought about how it would be boxed before you started making that. Next time I am going to 'build' a kit, I'll send it to you and when it's done, you can send it back to me. :)

Tony G0BZB

--- In QRPLabs@..., "Philip" <pcteee@...> wrote:


Pictures of my test rig in Photos under G4JVF album

Philip G4JVF


--- In QRPLabs@..., "Philip" <pcteee@> wrote:

Tested my module yesterday for a few hours on 30 and it worked fine,
FSKCW GPS locked.

One of these :-


Settings match the QRSS kit's default GPS values..
Has an SMA connector for an external GPS antenna..
It's 3.3volts so needs a regulator on the kit's 5volt line.
22 pin socket is a tad small but hookup wire can be pushed into
the pin holes.

Pretty sensitive, works indoors and fairly quick to lock in..


Philip G4JVF

--- In [email protected], "Stephen" <squirrox@> wrote:

Guys,

FWIW I used an EM-406A for testing the GPS functionality. See for details. They are widely available from Sparkfun and their distributors.

In the UK they are stocked by Proto-pic .

You will need 1 k ohm pull up resistors between the TX and Vcc and the PPS and Vcc.

Regards Steve G0XAR
Re: Grabber set-up 7mhz

"skipratpack"
 

Dick

Thanks for the info I am in a position in 2 weeks time to really get stuck in and have go with the PI as a grabber.

Andy
2E0CLY

--- In QRPLabs@..., "ferrymanr" <g4bbh@...> wrote:

I now have WSPR running on the Raspberry Pi with the latest raspbian wheezy on my SD card. WSPR works but I have problems with using a CAT cable as the RPi USB doesn't seem to like the load of the sound dongle and CAT cable at once. I suspect this is a firmware/software driver problem that may be resolved. G3WKW had posted a page on his original installation using an early armhf image at and now updated to
I had a few headaches at first but it now runs stably on my RPi, both decoding and transmitting using VOX instead of PTT. This proves that not only WSPR but other similar applications should also be possible on this machine. I suggest you go to and search for WSPR.
Dick G4BBH
Ultimate QRSS kit Built but not working ish...

"skipratpack"
 

Hi

I have finished my Ultimate QRSS kit and it kind of works.. The display works fine I can set my call etc. But when the unit's switched on I get a lovely 7mz CW for 30sec or so and it dies away and I am left with a horrid buzzing sound while tuned to 7mhz with a receiver. I am presuming it's the PA q1. I guess I can remove the PA Q1 and check the Osc with the scope to see if it keeps going or dies away as well?

I was running via a 7805 reg for the PA and pic supply. I switched to 6v for both and still got the same result.

Any thoughts gratefully received.

Andy
2E0CLY
Re: GPS recommendations

"Philip"
 

Pictures of my test rig in Photos under G4JVF album

Philip G4JVF

--- In QRPLabs@..., "Philip" <pcteee@...> wrote:

Tested my module yesterday for a few hours on 30 and it worked fine,
FSKCW GPS locked.

One of these :-


Settings match the QRSS kit's default GPS values..
Has an SMA connector for an external GPS antenna..
It's 3.3volts so needs a regulator on the kit's 5volt line.
22 pin socket is a tad small but hookup wire can be pushed into
the pin holes.

Pretty sensitive, works indoors and fairly quick to lock in..


Philip G4JVF

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

Guys,

FWIW I used an EM-406A for testing the GPS functionality. See for details. They are widely available from Sparkfun and their distributors.

In the UK they are stocked by Proto-pic .

You will need 1 k ohm pull up resistors between the TX and Vcc and the PPS and Vcc.

Regards Steve G0XAR
Re: GPS recommendations

"Philip"
 

Tested my module yesterday for a few hours on 30 and it worked fine,
FSKCW GPS locked.

One of these :-


Settings match the QRSS kit's default GPS values..
Has an SMA connector for an external GPS antenna..
It's 3.3volts so needs a regulator on the kit's 5volt line.
22 pin socket is a tad small but hookup wire can be pushed into
the pin holes.

Pretty sensitive, works indoors and fairly quick to lock in..


Philip G4JVF

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

Guys,

FWIW I used an EM-406A for testing the GPS functionality. See for details. They are widely available from Sparkfun and their distributors.

In the UK they are stocked by Proto-pic .

You will need 1 k ohm pull up resistors between the TX and Vcc and the PPS and Vcc.

Regards Steve G0XAR
Re: GPS recommendations

Stephen Farthing
 

Hi Arv,

Thanks for the post. Very useful contribution.?

We have discussed deriving the 1pps by taking the time from the arrival of NMEA sentences from the GPS, which in some cases is done every second. But at the moment it is only a thought.?

73s Steve


On 30 July 2012 22:49, Arv Evans <arvid.evans@...> wrote:
Hello

In addition to GPS, there are several other ways to obtain a 1 PPS clock signal.

??? ???

??? ???

??? ???

??? ???

I am not totally sure of this, but if your GPS receiver just puts out the textual NMEA
sentences, you might try adding a missing-pulse detector circuit with timing to emit a
pulse at the start of each data stanza.? On at least some GPS receivers this start of
stanza may occur at precise 1 second intervals.? Of course if you configure too much
data output for a stanza to complete in less than 1 second, this idea will not work.

??? ???

You also may have Differential GPS beacons located in your area.? These broadcast
GPS correction data in the 285 to 325 KHz frequency range.? Their transmitter clocks
are usually GPS locked for frequency stability.?

??? ???

Rubidium signal source modules show up frequently on Ebay.? These are surplus
and salvage from older cell phone sites.? Most will output a 10.0 MHz signal which
could be divided down to 1-PPS.? See Ebay item 270467211671 for a presently
available example.

Arv K7HKL
_._


On 07/30/2012 02:03 PM, Stephen wrote:
?

Guys,

FWIW I used an EM-406A for testing the GPS functionality. See for details. They are widely available from Sparkfun and their distributors.

In the UK they are stocked by Proto-pic

You will need 1 k ohm pull up resistors between the TX and Vcc and the PPS and Vcc.

Regards Steve G0XAR





--
Please Mr Coe, I cannot attend sports day for the next two weeks. My mum says too much advertising is bad for me ;-)
Re: GPS recommendations

Arv Evans
 

开云体育

Hello

In addition to GPS, there are several other ways to obtain a 1 PPS clock signal.

??? ???

??? ???

??? ???

??? ???

I am not totally sure of this, but if your GPS receiver just puts out the textual NMEA
sentences, you might try adding a missing-pulse detector circuit with timing to emit a
pulse at the start of each data stanza.? On at least some GPS receivers this start of
stanza may occur at precise 1 second intervals.? Of course if you configure too much
data output for a stanza to complete in less than 1 second, this idea will not work.

??? ???

You also may have Differential GPS beacons located in your area.? These broadcast
GPS correction data in the 285 to 325 KHz frequency range.? Their transmitter clocks
are usually GPS locked for frequency stability.?

??? ???

Rubidium signal source modules show up frequently on Ebay.? These are surplus
and salvage from older cell phone sites.? Most will output a 10.0 MHz signal which
could be divided down to 1-PPS.? See Ebay item 270467211671 for a presently
available example.

Arv K7HKL
_._

On 07/30/2012 02:03 PM, Stephen wrote:

?

Guys,

FWIW I used an EM-406A for testing the GPS functionality. See for details. They are widely available from Sparkfun and their distributors.

In the UK they are stocked by Proto-pic

You will need 1 k ohm pull up resistors between the TX and Vcc and the PPS and Vcc.

Regards Steve G0XAR
GPS recommendations

"Stephen"
 

Guys,

FWIW I used an EM-406A for testing the GPS functionality. See for details. They are widely available from Sparkfun and their distributors.

In the UK they are stocked by Proto-pic .

You will need 1 k ohm pull up resistors between the TX and Vcc and the PPS and Vcc.

Regards Steve G0XAR
Re: Experiments on PA voltage, Output Power of Ultimate QRSS Beacon for WSPR

"TONY_VOLPE"
 

My pleasure Philip,

Well done on getting the GPS sorted. I will be doing something of the sort, just to make sure the timing stays dead on. I spent some time trying to work out how to make use of a four year old Bluetooth GPS receiver that I have lying around, but I don't think I can work it out. I am sure that somewhere in among the bluetooth chips and all the surface mount stuff on the little board, there will be a 1pps output, but I can't find it with my multimeter. Of course all technical documents relating to the chipset have vanished from the web as it is obsolete. Looks like I will by having to buy a new one like the rest of you.

73s

de G0BZB op Tony

--- In QRPLabs@..., "Philip" <pcteee@...> wrote:

Excellent write up and information Tony..
Thank you

I've been testing mine on FSK QRSS today with a GPS module fitted..
Everything working fine..

Just got to sort the continuous carrier problem before I go on the other modes....

Philip G4JVF

--- In QRPLabs@..., "TONY_VOLPE" <tony.volpe.1951@> wrote:
gldi56x4
Re: Experiments on PA voltage, Output Power of Ultimate QRSS Beacon for WSPR

"Philip"
 

Excellent write up and information Tony..
Thank you

I've been testing mine on FSK QRSS today with a GPS module fitted..
Everything working fine..

Just got to sort the continuous carrier problem before I go on the other modes....

Philip G4JVF

--- In QRPLabs@..., "TONY_VOLPE" <tony.volpe.1951@...> wrote:
gldi56x4
Re: Problems with Ulimate QRSS kit

"woodiescbj"
 

Hi Toni,
Thanks for your reply, yes I have checked every thing twice and three times, it now seems there is a software issue on the programmed chip, a solution has been posted (not by Steve or Hans) which involves cutting the track at pin 14 and reconnecting the track then to pin 16, I will have to think about this.
Vy 73 de Colin DD5CF / G1ZOS

--- In QRPLabs@..., HG4FC, Tóni <hg4fc@...> wrote:

Hi Colin,

A lot of things can cause trouble.
Soldering defects, reversed parts, wrong parts installed position.

Unfortunately, the people of your own mistake is difficult to discover.

I suggest you check out point by point the affected part.

My QRSS KIT-em worked well at first, but other construction equipment at the
time I went I was like you.



If you manage to find out what caused the error, you can publish your hile
they learn.


Good luck!

73 'Toni



From: QRPLabs@... [mailto:QRPLabs@...] On Behalf Of
woodiescbj
Sent: 2012. July 30. 13:18
To: QRPLabs@...
Subject: [QRPLabs] Problems with Ulimate QRSS kit





Having just read Tony's post "Experiments on PA voltage, Output Power of
Ultimate QRSS Beacon" and although I have only the one transistor supplied
with the kit I have connected the PA bridge as in 5.2 connection for basic
operation.

As in my previous post connected the kit to 4 accu type batteries at 4.8
volts I now have a constant 4.58 volts instead of constant 78 mV on the DMM
meter with the RF probe, the transistor is getting hot but still no drop in
voltage after the WSPR transmission is finished, I cannot work out what I
have done wrong.

Anyone any ideas.

Many thanks for the replys.

73 de Colin
Re: Problems with Ulimate QRSS kit

HG4FC, Tóni
 

开云体育

Hi Colin,

A lot of things can cause trouble.
Soldering defects, reversed parts, wrong parts installed position.

Unfortunately, the people of your own mistake is difficult to discover.

I suggest you check out point by point the affected part.

My QRSS KIT-em worked well at first, but other construction equipment at the time I went I was like you.

If you manage to find out what caused the error, you can publish your hile they learn.


Good luck!

73 'Toni

?

From: QRPLabs@... [mailto:QRPLabs@...] On Behalf Of woodiescbj
Sent: 2012. July 30. 13:18
To: QRPLabs@...
Subject: [QRPLabs] Problems with Ulimate QRSS kit

?

?

Having just read Tony's post "Experiments on PA voltage, Output Power of Ultimate QRSS Beacon" and although I have only the one transistor supplied with the kit I have connected the PA bridge as in 5.2 connection for basic operation.

As in my previous post connected the kit to 4 accu type batteries at 4.8 volts I now have a constant 4.58 volts instead of constant 78 mV on the DMM meter with the RF probe, the transistor is getting hot but still no drop in voltage after the WSPR transmission is finished, I cannot work out what I have done wrong.

Anyone any ideas.

Many thanks for the replys.

73 de Colin
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