HFU HF Underground
Loggings => North American Shortwave Pirate => Topic started by: ChrisSmolinski on March 29, 2017, 1244 UTC
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Some very weak music just above the noise level.
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Chris, your receiving station impresses me a great deal, especially when you are receiving my 100mW "test" broadcast.
not intending to broadcast today, just doing some very low power stability testing and calibration adjustments with C-QUAM and a 25Hz pilot tone (PCB i etched and built).
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Your transmitting antenna setup is impressive also! Hearing you again at 1335z. Maybe SIO 111-222 ?
C-QUAM! I know someone who will be excited to hear that ;D
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its really quite easy to integrate it into the radio i am using to broadcast (Yaesu 757-GXII).
i just have to watch/adjust the AM & PM modulation levels, trying different adjustments and testing it for the best outcome result (the purpose of the low power test broadcast).
im doing this in a rather crude way, it was relatively easy to enable simultaneous PM & AM modulation but the crude part is using two soundcards, one soundcard has L+R and the other has L-R, both are processed and synchronized by two instances of stereotool - the PCB is an "isolation" circuit to avoid common grounds on both sides of the audio chain so they dont cancel each other out.
so this really requires alot of adjustments and calibration to get it to operate correctly but the results so far are pretty good.
good thing work is slow today.
also going to try DRM as well.
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Relay Station 5150 S1-S3 in NY (occasionally)
Been listening since a little before 2000 UTC and hearing bits & pieces of music through 2015. I believe I heard Arlo Guthrie "City Of New Orleans" at 2008 ? Going to keep listening although not hearing much now.
2133: Signal back in with Fleetwood Mac "Go Your Own Way" (this one I got 100%)
2152: Sly & The Family Stone "Thank You"
2208: The Carpenters "Only Yesterday" (peaking S3 for a minute)
2216: Meatloaf "Two Out Of Three Ain't Bad"
2258: Wild Cherry "Play That Funky Music"
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I'm getting SIO 222 audio now. Quite impressive for 100 mW.
Now SIO 333 at 2139z.
S7 signal at 2149. Amazing.
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C-QUAM! The wave is spreading. ;D
However, I have yet to hear 5150 (regardless of power levels).
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Nada nothing here at 2330.
Will check back later.