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Author Topic: Aviation weather on 6950 USB?  (Read 5037 times)

Offline Lex

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Aviation weather on 6950 USB?
« on: April 23, 2012, 0222 UTC »
4/23/12, 6950 USB, 0215z: Aviation weather, Trenton military, seems identical to 6604 and 6754 aviation weather reports.  Fair via east coast remote SDR, inaudible here at home.

First time I've heard this on 6950.
That li'l ol' DXer from Texas
Unpleasant Frequencies Crew
Al: Palstar R30C & various antennae
Snoopy: Sony ICF-2010
Roger: Magnavox D2935
(Off-air recordings.)
Email=my name at hotmail dot com

Offline ChrisSmolinski

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Re: Aviation weather on 6950 USB?
« Reply #1 on: April 23, 2012, 1135 UTC »
Very interesting, I checked the SDR recording at 0215z, and nothing heard here in MD.
Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
NRD 545 / netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 670 ft horizontal loop / 500 ft northeast beverage / 270 ft west-south-west beverage / 300 ft south beverage / 43m / 20m / 10m  dipoles / Crossed Parallel Loop

cmradio

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Re: Aviation weather on 6950 USB?
« Reply #2 on: April 24, 2012, 0318 UTC »
Possibly a heterodyne image from something rusty and a local carrier?
(when my gutters in Winnipeg oxidized, CFB Shilo in MB would come in all over the band)

Peace!

Offline ChrisSmolinski

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Re: Aviation weather on 6950 USB?
« Reply #3 on: April 24, 2012, 1120 UTC »
Hmm... you had it on the SDR-14, Lex? Curious that I didn't have it on the netSDR. I do wonder if i was some sort of mixing product or image, as cmradio suggested?

I notice a spur/image/whatever from WWCR in the evenings on 6970, but I get it on both the netSDR and the NRD 545, so it seems to be "real" vs just heard on one radio.
Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
NRD 545 / netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 670 ft horizontal loop / 500 ft northeast beverage / 270 ft west-south-west beverage / 300 ft south beverage / 43m / 20m / 10m  dipoles / Crossed Parallel Loop

Offline Lex

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Re: Aviation weather on 6950 USB?
« Reply #4 on: April 26, 2012, 0132 UTC »
Hmm... you had it on the SDR-14, Lex? Curious that I didn't have it on the netSDR. I do wonder if i was some sort of mixing product or image, as cmradio suggested?

I notice a spur/image/whatever from WWCR in the evenings on 6970, but I get it on both the netSDR and the NRD 545, so it seems to be "real" vs just heard on one radio.

Yup, via the SDR-14.  Didn't seem to be an image - that SDR seems bulletproof.  I did wonder whether it was a spur.  Haven't heard it on 6950 since that log the other day.
That li'l ol' DXer from Texas
Unpleasant Frequencies Crew
Al: Palstar R30C & various antennae
Snoopy: Sony ICF-2010
Roger: Magnavox D2935
(Off-air recordings.)
Email=my name at hotmail dot com

Offline ChrisSmolinski

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Re: Aviation weather on 6950 USB?
« Reply #5 on: April 28, 2012, 1440 UTC »
As it turns out... this is a receiver image in the SDR-14.  I decided to write up a short blog post about it:  http://www.hfunderpants.com/?p=882
Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
NRD 545 / netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 670 ft horizontal loop / 500 ft northeast beverage / 270 ft west-south-west beverage / 300 ft south beverage / 43m / 20m / 10m  dipoles / Crossed Parallel Loop

cmradio

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Re: Aviation weather on 6950 USB?
« Reply #6 on: April 29, 2012, 0321 UTC »
Solved! ;D

Offline ChrisSmolinski

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Re: Aviation weather on 6950 USB?
« Reply #7 on: April 29, 2012, 1521 UTC »
Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
NRD 545 / netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 670 ft horizontal loop / 500 ft northeast beverage / 270 ft west-south-west beverage / 300 ft south beverage / 43m / 20m / 10m  dipoles / Crossed Parallel Loop

Offline Lex

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Re: Aviation weather on 6950 USB?
« Reply #8 on: May 18, 2012, 0726 UTC »
Via SDR-14, same image from aviation weather audible on 6950 overnight while listening to the TIMIT phrase loops (logged elsewhere as "aggressive policeman", although I prefer to think of it as the greasy wash water station.  Or maybe the oily rag station.  ???)
That li'l ol' DXer from Texas
Unpleasant Frequencies Crew
Al: Palstar R30C & various antennae
Snoopy: Sony ICF-2010
Roger: Magnavox D2935
(Off-air recordings.)
Email=my name at hotmail dot com