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Messages - alleycat

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121
I think you're correct - I could hear a weak broadcast under one of these signals.

122
I never seem to be able to find a decent match for my mystery signals at SigIDWiki. This one looks like digital modes with a number of discrete frequency points used, but the frequencies "bend" while being transmitted (voice encryption?). Sorry I'm not more versed in the proper terminology. Screen capture of waterfall:

Audio clip: https://www.lutins.org/sdr/7960_USB_3_kHz_bw.mp3

Thanks for any ID assistance!

123
Solid S+25 signal in Binghamton, NY - out-competing the lightning crashes heartily (yes, I'm going to turn off the radio and ground my antenna when those storms get closer!).

124
Solid signal in Binghamton, NY ranging from S9+15 to S9+28.

125
One of the strongest stations of any kind (excluding commercial AM and FM broadcast) that I've ever received in my over 40 years of monitoring the airwaves at S40+ in Binghamton, NY.

126
NOTE: This item is being sold via eBay. Please do not contact me regarding a personal sale, as that is against eBay policy.

Small Wonder Labs Rockmite 40 meter (7030 kHz) and 80 meter (3686 kHz) QRP CW transceivers - sold as a set. I am a professional electronics technician (and amateur radio operator, of course). I built these units years ago, including the optional RMK keyer chips (to provide advanced functions, such as memory) and miniature paddles. I recently evaluated all functions, and both radios are in perfect working order, with the 40m radio putting out 552 mW and the 80m radio putting out 333 mW when fed with a 12 volt power supply. Also included are a 12 volt auto adapter, ear buds, and full documentation on a USB drive. Equipment is from a non-smoking home. These are great for backpacking! Each measures 2¼ inches (57 mm) wide x 3½ inches (89 mm) x 1 inch (25 mm) high (not including the paddles). Refer to ebay listing at https://www.ebay.com/itm/165393111113 for photos, including screen captures from spectrum analyzer testing.

127
HF Mystery Signals / Re: 6775 Serdolik or VARA
« on: March 14, 2022, 0124 UTC »
I just received a similar set of short data bursts (audio at https://www.lutins.org/sdr/6775_unid_data.mp3) on the same frequency at 2356 GMT on 13 Mar 2022. When decoding Domino, MultiPSK is limited to 22 baud, and the bandwidth of this signal suggests the baud rate is higher. I tried decoding with FLDIGI (allows up to 88 baud), but couldn't get a decode on my recording nor yours. Either encrypted, or another, similar mode?

128
Just reinstalled FLDIGI (hadn't reinstalled it since my last OS rebuild) and bingo!

 Before RSID: <<2022-03-14T00:55Z MT63-1000L @ 14070000+1488>>
 LF   [.S_GB:8 ~<*!t
 2351Z     SHARES NORTH   SHARES NORTH     DE     NNQ5GR   NNQ5GR     INT ZKE   INT QRU   K

129
Ah yes - now that I'm running my recording into MultiPSK I see that the opening "data" spells out words, including MT-63, in the waterfall. I'm not familiar with this mode (I don't see a listing for it at SigIDWiki), and I'm unable to get a decode (encrypted?). Thanks for the quick response!

130
NNQ5GR calling stations for the net; "no stations heard" then data (unid format), then brief exchange with NNA5HF. If someone wants to help me ID the data mode, recording is at https://www.lutins.org/sdr/6765_SHARES.mp3.

131
Phenomenal signal here - peaks at S9+40 (only slight fading - down to S9+30).

132
Very respectable (peaks a bit above S9) in upstate NY as well. Clear despite relatively high noise level, with only slight fading.

133
Shortwave Broadcast / unid 6930.9 AM 0130 UTC 13 Mar 2022
« on: March 13, 2022, 0143 UTC »
News forecast with male and female announcers in language I can't identify - low signal amplitude, very narrowband AM (I'm seeing less than 2 kHz), high noise level. Curious that it's off-frequency; nothing listed at shortwaveschedule.com for 6930 nor 6931. If you want to struggle through the poor audio and help me identify this, audio clip at https://www.lutins.org/temp/sdr/6930.9.mp3.

134
Booming in at S30+ with some fading here.

135
Nearly inaudible here; carrier actually appears to be on 6931

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