Messages

241

SDR - Software Defined Radio / intermod weirdness

« on: November 19, 2017, 2205 UTC »

So I'm sitting here monitoring the 43m band for this evening's entertainment....everything is nice and quiet until BLAM.  I see a carrier pop up on 6935kHz which rapidly develops into severe intermod (local AM station, sounds like).  It lasted a couple of minutes, and then died down to a barely visible carrier signal.  I didn't touch a thing....

242

North American Shortwave Pirate / Re: RFW 6965 USB 2135 UTC 19 Nov 2017

« on: November 19, 2017, 2143 UTC »

Argh I need a better antenna.  I saw the carrier, but just briefly....

243

North American Shortwave Pirate / Re: UNID 6950.5 AM 2123 UTC 19 NOV 2017

« on: November 19, 2017, 2126 UTC »

seeing the carrier here in MD, but no joy on the music.  Seemed to drift up toward 6950.6 toward the end of the broadcast

244

Utility / OTHR 60m 0158Z 18 NOV 2017

« on: November 18, 2017, 0202 UTC »

Seeing OTHR on 60m...two distinct signals, a strong signal centered at ~ 4750kHz, and a weaker signal centered at ~4820kHz.

245

North American Shortwave Pirate / UNID 6935 kHz AM 2240 UTC 05 Nov 2017-suspect Radio Appalachia?

« on: November 05, 2017, 2242 UTC »

S7 with some strong fades, good sound quality otherwise.  Also hearing another signal mixed in, not sure if that's on my end or in the broadcast. 

246

North American Shortwave Pirate / Re: UNID 6945 USB 2124 UTC 5 Nov 2017

« on: November 05, 2017, 2130 UTC »

S5-6 in central MD

247

North American Shortwave Pirate / Re: UNID 6925 USB 1923 UTC 5 Nov 2017

« on: November 05, 2017, 1941 UTC »

Just barely above noise floor of ~S4 in MD.

248

Equipment / Re: Electronic Dog Fence Wire as Antenna

« on: November 05, 2017, 1618 UTC »

I always wondered about using electric fence wire...or even better, the stuff that's got wire woven into a nylon rope.  I have had some success with temporary antennas using magnet wire and plastic thumbtacks....

249

Shortwave Broadcast / Adventist World Radio-India? 15150 kHz AM 1525 UTC 5 Nov 2017

« on: November 05, 2017, 1537 UTC »

~ S5 or so.  Caught what sounded like 'Punjab' when they were signing off at around 1528.  Had a few very sharp nulls while listening....carrier and all. 

250

Utility / COMEX 17-4 5330.5 khz USB 0300 UTC 05 NOV 2017

« on: November 05, 2017, 0349 UTC »

AAM3 (plus another station that I didn't catch the callsign for) giving out frequencies for military/amateur interoperability infrastructure reporting exercise COMEX 17-4:

5346.5 kHz SE US
5337 kHz NW US
5371.5 kHz(?) SW US
5403.5 kHz Central US
5330.5 kHz NE US

Followed up by reports coming in on 5330.5 kHz.

(edited....damn analog UTC clock)

251

SDR - Software Defined Radio / SDR-setting I/R gain?

« on: November 05, 2017, 0328 UTC »

Could someone explain the difference between the gain settings in SdrDx for an AFEDRI SDR?  You can apparently set the RF gain at the SDR itself (in the SDR setup menu), but there's also a slider for I/R gain in the main software window.  How does one go about finding the optimal gain settings?
Thanks,
Robert

252

Other / Re: Unknown 9140 AM 1829Z 31 JUL

« on: July 31, 2016, 2220 UTC »

Hmm, could be an image but didn't sound like broadcast am...I tuned out after a few minutes anyway.  Chris, were you running SDR recording that you could check back against?

253

Other / Unknown 9140 AM 1829Z 31 JUL

« on: July 31, 2016, 1831 UTC »

Music, perhaps Spanish lyrics?  Weak w deep fades into central MD.  Posted here because I didn't see anything on the normal software schedules at this freq.

254

Software / Re: MultiMode updated to version 6.7.2

« on: July 25, 2016, 0202 UTC »

I noticed something shortly after posting...apparently there's an option for AFEDRI-net audio now....

255

Software / Re: MultiMode updated to version 6.7.2

« on: July 23, 2016, 0236 UTC »

This might be a silly question, but how does one pipe the audio stream from a SDR to multimode?  Soundflower or the like?