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Messages - alleycat

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106
OMG booming in at nearly S9+40 (yes, there are a lot of distracting lightning crashes). BallSmacker, are you my neighbor?!?  ;)

107
Off the air at 0240z. Signal was S9+20 here in Binghamton, NY.

108
HF Mystery Signals / Re: Amateur mode 3596 kHz - FSK?
« on: April 29, 2022, 0209 UTC »
After over 6 months without a reply I deleted the audio file. I had originally included a waterfall image in my post; that too got deleted.

109
Solid signal (peaking at S9+20) well above S8 noise floor in Binghamton, NY.

110
Peaking at S20, with noticeable fading (down to S9) in Binghamton, NY. Easily overwhelming the significant level of static crashes.

111
I went back to monitoring Inmarsat-4 F3 after a long absence. I'm picking up STD-C LES and Classic Aero 600/1200/10500 bps signals, but I don't see any 8400 bps voice signals where I saw them before (1546.130 – 1546.190 MHz). I have a note that says that 600 & 1200 bps signals are scheduled to be phased out by 2023; are those voice channels gone now, or just very infrequent? Thanks!

112
Excellent signal with minimal fading (ranging from S8 to S9+) in Binghamton, NY.

113
I think you're correct - I could hear a weak broadcast under one of these signals.

114
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!

115
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!).

116
Solid signal in Binghamton, NY ranging from S9+15 to S9+28.

117
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.

118
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.

119
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?

120
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

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