Re: [dxatlas] Skimmer on VHF/UHF
- Alex, VE3NEA wrote:
> Hi Dave,Thanks for the explanation Alex,
> The bandwidth of the input signal in the 3-kHz mode must be 3 kHz. If it is
> less than that, the sensitivity of the decoder drops significantly. Your
> signal has only about 1500 Hz BW - at this bandwidth, CW Skimmer can decode
> only very strong signals. Please see if you can use a wider filter in your
> 73 Alex VE3NEA
I guess that's because I was using the 'CW' setting on my TS2000X, the
width setting was 2000Hz.
I will try again using USB, as that allows me to go up to 50000Hz.
Although your point about needing a stronger signal is born out by the
fact that the stronger signal from the beacon today was being decoded.
I've been using the SDR-IQ on 20M with CWSkimmer today, and have got the
aggregator running now. However, I have noticed some errors coming up
on the aggregator DOS window.
One says "error:cannot send spot - http://skimmer.dxwatch.com/rx.php -
500 server closed connection without sending any data back" and the
other says "500 cant connect to skimmer.dxwatch.com:80 (connect: Unknown
error)" then the next time it goes through OK for quite a long time
until the next error message comes up.
I thought I'd mention these errors in case they mean something to the
operation of the aggregator.
Cheers - Dave (G0DJA)
- David Ackrill wrote:
> I will try again using USB, as that allows me to go up to 50000Hz.Ooops, that's a typo of course. The maximum width, with the TS2000X in
USB, is 5000Hz.
- Thinking ahead a little...
Is there a way to use the SDR-IQ/14 as a transverter IF, but have the
Skimmer log the spots on a different frequency?
For instance, in Europe the 4M band (70MHz) is becoming available in
more countries to Amateurs but many/most commercial radios don't cover
the band. Or, even if they do the resultant signals and receivers are
poor. Therefore, many people use a transverter for that band.
Similarly, on the higher microwave bands it's not uncommon to use
transverters from bands such as 10m/2m or even 70cm.