Search found 20 matches

by ultravista
Fri Jul 21, 2017 1:37 am
Forum: General
Topic: RSP2 Frequency is Incorrect
Replies: 4
Views: 2513

RSP2 Frequency is Incorrect

I just bought a 2nd hand RSP 2 on eBay (from a HAM operator). With SDRUno, SDR#, and HDSDR, the frequency is off a bit compared to a known signal. For example, in SDRuno, my local Las Vegas WWV frequency is 162.555.000 but the applications above don't 'center' with the signal @ 162.555.000 but 162.5...
by ultravista
Fri Jul 14, 2017 2:26 pm
Forum: SDRplay related
Topic: Using SDR# to drive the SDRplay RSP
Replies: 53
Views: 38929

Re: Using SDR# to drive the SDRplay RSP

>> New version of the SDR# plugin is now available on the http://www.sdrplay.com/downloads.html page (V1.2) please report any bugs/issues here.

Where can I get v1.2 or similar that works with the RSP2?
by ultravista
Mon Jun 26, 2017 1:32 pm
Forum: SDR Antennas
Topic: Long Wire Antenna Performance Questions
Replies: 7
Views: 6349

Re: Long Wire Antenna Performance Questions

This is the balun: http://www.nooelec.com/store/media/catalog/product/cache/1/image/1200x/040ec09b1e35df139433887a97daa66f/b/a/balun-1.jpg When one wire of the twisted pair is connected to the upper terminal, the signal strength is good. When the second wire in the pair is connected to the lower ter...
by ultravista
Sun Jun 25, 2017 8:38 pm
Forum: SDR Antennas
Topic: Great experience with PAR Electronics EF-SWL
Replies: 23
Views: 24331

Re: Great experience with PAR Electronics EF-SWL

A 45 foot radiator and 9:1 balun, shouldn't this be easy to make @ home?

Is there something special about 45 feet?
by ultravista
Sun Jun 25, 2017 3:30 pm
Forum: SDR Antennas
Topic: Long Wire Antenna Performance Questions
Replies: 7
Views: 6349

Long Wire Antenna Performance Questions

Hoping someone can explain why this is happening, so that I may understand, learn, and make a better antenna. A few weeks ago I ran a 60 foot long wire antenna, 25 feet vertical and 35 feet sloping from the pole to a terminating point in the yard. The mast is ~18 feet of galvanized fence post - the ...
by ultravista
Sun Jun 25, 2017 2:46 pm
Forum: SDR Antennas
Topic: RA0SMS Miniwhip bad performance on SDRPlay
Replies: 36
Views: 24783

Re: RA0SMS Miniwhip bad performance on SDRPlay

Thank you Heinrich.
by ultravista
Sat Jun 24, 2017 10:24 pm
Forum: SDR Antennas
Topic: RA0SMS Miniwhip bad performance on SDRPlay
Replies: 36
Views: 24783

Re: RA0SMS Miniwhip bad performance on SDRPlay

Heinrich - thank you. I am in the US. I have three power supplies. http://i.imgur.com/f7Uh3hD.jpg and http://i.imgur.com/J7Zz0mA.jpg All three are approximately the same. To keep noise down, do you recommend wrapping through a toroid (if yes, which and how many turns)?
by ultravista
Sat Jun 24, 2017 3:21 pm
Forum: SDR Antennas
Topic: RA0SMS Miniwhip bad performance on SDRPlay
Replies: 36
Views: 24783

Re: RA0SMS Miniwhip bad performance on SDRPlay

The ra0sms mini whip antenna requires a 12-15V 100-150ma power supply. Around the house, I have many power supplies that are labeled as 12-15V and 100-150ma but when measured, are nowhere near the printed output. All are over voltage and current. Not one was true to the label. Not one was under volt...
by ultravista
Sat Jun 24, 2017 3:14 pm
Forum: SDR Antennas
Topic: Longwire antenna question
Replies: 7
Views: 4901

Re: Longwire antenna question

Paul - what are you using as a power supply for the ra0sms? Around the house, I have many power supplies that are labeled as 12-15V and 100-150ma but when measured, are nowhere near the printed output. All are over voltage and current. Not one was true to the label. Not one was under voltage or curr...
by ultravista
Thu Jun 22, 2017 3:46 pm
Forum: SDR Antennas
Topic: Longwire antenna question
Replies: 7
Views: 4901

Re: Longwire antenna question

Paul - I too have the ra0sms antenna. It is producing noise everywhere in the HF region, so much so that it is entirely unusable. The mast is ~ 25 feet, the bottom 15 feet is metal and the top is PVC. The mast is portable and rests on concrete - there is no real ground. The ra0sms is mounted @ the t...

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