Search found 103 matches

by Paul
Thu Jul 06, 2017 1:33 pm
Forum: SDR Antennas
Topic: Bias T and active mini-whip
Replies: 15
Views: 2737

Re: Bias T and active mini-whip

Thanks again for your time and interest Heinrich - I will do just that. And just by the way, the mini-whip now compares very favourably with my 20M simple longwire .
I'm beginning to think that antennae can become an addictive obsession.
Best Wishes
Paul
by Paul
Wed Jul 05, 2017 7:39 am
Forum: SDR Antennas
Topic: Bias T and active mini-whip
Replies: 15
Views: 2737

Re: Bias T and active mini-whip

And one very last thing Heinrich (if you have the time) Now that all is hopefully in order, would you consider that there is any advantage from moving from my serviceable (switched) 12v/1200ma half-brick to the 13.8V/5-7Amp more sophisticated unit? It does seem like a no-brainer, but what you said a...
by Paul
Tue Jul 04, 2017 8:50 pm
Forum: SDR Antennas
Topic: Bias T and active mini-whip
Replies: 15
Views: 2737

Re: Bias T and active mini-whip

For Heinrich and Andy Thanks for the support and advice with regard to my active mini-whip antenna problems. I have isolated the problem to an intermittent short (I think) in the RG58 cable (an old run). I have replaced this in part and the problem appears to have gone away. All power supplies and a...
by Paul
Sun Jul 02, 2017 5:58 pm
Forum: SDR Antennas
Topic: Bias T and active mini-whip
Replies: 15
Views: 2737

Re: Bias T and active mini-whip

It's pretty surely a sporadic power fault - having opened the RF isolating transformer, from it's appearance I suspect that it has very likely overheated and I would guess that what I have been experiencing have been random short circuits. At least the RSP is still delivering the goods and I must sa...
by Paul
Sun Jul 02, 2017 9:42 am
Forum: SDR Antennas
Topic: Bias T and active mini-whip
Replies: 15
Views: 2737

Re: Bias T and active mini-whip

Thanks for your no doubt good advice (again) Heinrich - at the moment it's back on the 12V/1200ma (switched) brick, which I suspect may be problematic. It was great for 2 hours or so yesterday evening and again this morning, equaling or better than the 20M longwire, then the power level very obvious...
by Paul
Sat Jul 01, 2017 8:10 pm
Forum: General
Topic: SDRConsole and SDRplay
Replies: 5
Views: 1318

Re: SDRConsole and SDRplay

Thanks - didn't think of that - I'll have a looksee..
by Paul
Sat Jul 01, 2017 8:08 pm
Forum: SDR Antennas
Topic: Bias T and active mini-whip
Replies: 15
Views: 2737

Re: Bias T and active mini-whip

Thanks for your time yet again Heinrich. The try with the Bias T was inspired as I said by the really impressive performance of Kevin Loughlin's commercial assembly. His RSP2's Bias T sounded incredibly clear and crisp - I can't really speak for my own (RSP2) as there does seem to be a problem (the ...
by Paul
Sat Jul 01, 2017 6:59 am
Forum: SDR Antennas
Topic: Bias T and active mini-whip
Replies: 15
Views: 2737

Re: Bias T and active mini-whip

I hadn't noticed that Andy - but it did come back and disappear again - don't know why at the moment, but I'll give it a whirl and see if it does the same here.
Thanks for your time and reply.
Cheers
Paul
by Paul
Fri Jun 30, 2017 10:49 am
Forum: SDR Antennas
Topic: Bias T and active mini-whip
Replies: 15
Views: 2737

Bias T and active mini-whip

Having watched Kevin Loughlin's video (https://www.youtube.com/watch?v=F0MD51FqPPY&t=979s) building an active mini-hip from kit and hearing the audio quality produced when powered by his RSP2 Bias T, I was encouraged to try this and was pleased with the result, obtaining a very clear and clean s...
by Paul
Thu Jun 29, 2017 10:27 am
Forum: General
Topic: SDRConsole and SDRplay
Replies: 5
Views: 1318

Re: SDRConsole and SDRplay

Hi Andy Seems to be sort of consistent - exemplified by these examples: Input: 125.550 output: 125.500 Input: 5.505 output: 5.500 Input: 0.995 output: 990.000 Input:175.250 output: 125.200 In the panel on the rhs where the input "box" appears the frequency appears correctly, but the actual...

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