That's good to know. I was trying very hard to think of something that I'd done wrong and I just couldn't think of anything.
I still have a small problem with the unit being a bit funny about powering up and I think the transistor is getting a little hot so there is some experimenting that need to be done there.
Many thanks for your help, apologies to the album owner I put it in by mistake. I had assumed it was a general use one.
Much appreciated.
Alex
toggle quoted message
Show quoted text
--- In QRPLabs@..., Hans Summers <hans.summers@...> wrote:
Hi Alex,
There have been a number of firmware versions since v1.02, the full list is
here , but I do not think
that any of the bug fixes are applicable to your case.
I did find the photo you uploaded eventually, you put it in someone else's
folder I think ;-) In case anyone else couldn't find it, it's here in
woodiescbj's folder:
That photo shows message "TEST" in QRSS mode. I do not think there is a
problem here. You can see the strong line when the transmission is on. The
much weaker line when the keying is off, is just your sensitive receiver
picking up the signal from the oscillator, un-amplified. It's normal I
think, no problem. Receiving stations will not pick up the signal from your
crystal oscillator. It's just that you're right next to it.
In the Test mode you should see an FSK square wave as in the manual at
section 9. If you do not - then you need to check what settings you have in
the "FSK (Hz)" setting and the "FSK Adj." setting. Try 5 and 01,000
respectively. If you still see no shift in TEST mode, then I think some
checking of the circuit around the LED is needed.
73 Hans G0UPL
--- In QRPLabs@..., "g7kse" <g7kse@> wrote:
Thanks for the quick response Hans,
hope this helps better diagnose if there is a problem
The software version is 1.02
Kit bought in August
Receiver is connected to PC running Argo
Mode selected (nominally) CW
RF load on kit 20dBm
Rx RF Gain backed off
Powering up is a bit hit and miss - Occasionally it doesn't start up,
sometimes it'll start up with what I assume is a corrupted set of
characters on the LCD. Sometimes its fine. I can't find a fault with wiring
here although any pointers would be helpful
In test mode I was expecting to see the frequency shift every second
(Speed set to 01)with an output on Argo pretty much as per the build
instructions section 7. What I actually get is what looks and sounds like a
carrier without any frequency shift. Or nothing at all.
In CW mode I get a similar situation where I get a constant carrier heard
through the receiver speaker and shown on Argo. The output looks like the
carrier is on and keying produces the correct code but he carrier never
drops off. I'll put a capture from Argo into the photos folder.
Hope this is enough. I will keep on experimenting here and hopefully will
get it sorted out.
Alex, g7kse
--- In QRPLabs@..., Hans Summers <hans.summers@> wrote:
Hi Alex,
I'm sorry but it's not quite clear to me what you're seeing here, and
what
you're expecting to see.
Please can you confirm your version is v1.02? Versions before that had
an
on/off keying problem but that was fixed in v1.02. FYI the full version
history is here: .
You mention the "Test" mode - in this mode the signal should be constant
carrier, with a frequency shift every N seconds where N is the speed
setting you have entered.
How are you monitoring the signal and what load are you using at the RF
output of the kit? Are you using Argo to monitor, or just listening on
the
receiver audio?
I think more information is necessary, to help to either diagnose the
problem, or even if there IS an actual problem :-)
73 Hans G0UPL
--- In QRPLabs@..., "Alex" <g7kse@> wrote:
I've got a little problem that I think isn't a result of my mistake. I
get a constant carrier and can not see anything whilst in test mode. I
don't have sophisticated test gear just a reiver and dmm.
the kit powers up and if I use the cw mode for example there is a
constant carrier on just about the right frequency and the cw dit and
dahs
will go on nicely but the carrier doesn't drop off. Its making the PA
quite
hot and I'm sure (well fairly) it not something I've done. the software
version is 1.2
Any clues?
Alex, g7kse
