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Messages - Teotwaki

Pages: 1 ... 156 157 158 159 160 161 162 163 [164] 165 166 167 168 169 170 171 172 ... 206
2446
HF Beacons / Re: Possible insight in to the Hiker beacon
« on: May 13, 2016, 1507 UTC »
At power levels so low, what does it take to receive the signals if you're not near the transmitter? I've attempted to find some of these signals but no luck so far. I know part of my issue is that my longwire doesn't do so well with weak or distant signals much below 49 m (and that band can be tough too), and my receivers can only be tuned in 1 kHz increments. Still, with such restrictions can I reasonably expect to hear these beacons when propagation is good? I'm in Denver CO.

Can you share more about your antenna? Dimensions, feedline, tuner?

What is the narrowest receiver bandwidth for CW mode?


Basically you have a receiving system and if you cannot have a perfect receiver then you try to improve the gain of the antenna.

Also try listening at different times of day such as before and after dawn, midday and before and after sunset. A couple of years back I was in the San Juan mountains of Colorado and received these with a less than perfect antenna but a good receiver:

2097  "A" beacon, weak but clear
4094.5 "X" beacon, clear and weak with slight fading
4096.24 Hexie with the 1 second dash

From some older notes there may be some beacons in Colorado. Token posted some YouTube videos here

8000.5 kHz, S: YouTube - Pirate beacon, "S" in Colorado, September 05, 2010, 8000.5 kHz
https://www.youtube.com/watch?v=rE49nzA8Y6k

11003.45 kHz, I think this is Echo: YouTube - Pirate beacon, "Echo" in Colorado, September 05, 2010, 11003.45 kHz
https://www.youtube.com/watch?v=VwYWX37qTMc


I have found it helps a lot if you know what to listen for. Here are two lists of YouTube audio recordings of beacons

http://www.hfunderground.com/board/index.php/topic,19965.0.html

http://forums.radioreference.com/hf-mw-lw-general-discussion/190582-few-pirate-beacon-reception-videos-i-put-youtube.html#post1379971





2447
HF Beacons / Re: Possible insight in to the Hiker beacon
« on: May 13, 2016, 1405 UTC »
We don't have much snow to deal with and have some remote, desolate and wide open spaces where a beacon and long wire antenna might never be found   ;D

2448
HF Beacons / Re: My Morning Beacon Log
« on: May 13, 2016, 1403 UTC »
first catch of the morning

4096.360 KHz  Hexie, very weak but still audible

2449
HF Beacons / Re: My Evening Beacon Log
« on: May 13, 2016, 0234 UTC »
4095.305 KHz  Unknown dasher, very weak
4096.360 KHz  Hexie, very weak

2450
HF Beacons / Re: 4102.410 KHz Windy?
« on: May 13, 2016, 0111 UTC »
4102.342 KHz with a 20+ dB signal over the noise. Long dashes

2451
HF Beacons / Re: 6701.045 KHz
« on: May 13, 2016, 0102 UTC »
Since I am throwing out unknowns I can see a couple more signals, may be local RFI.

6701.378 KHz  a 2 second dasher
6701.576 KHz  a 2 second dasher that seems to key up at the same time

2452
HF Beacons / Re: 6701.045 KHz
« on: May 13, 2016, 0057 UTC »
6700.950 KHz at the moment 20+ dB over the noise floor. Dashes with 3 - 5 seconds between them

2453
HF Beacons / Re: My Afternoon Beacon Log
« on: May 12, 2016, 2336 UTC »
6700.524 KHz  Hexie2K with a decent signal

2454
HF Beacons / Re: 6701.045 KHz
« on: May 12, 2016, 1535 UTC »
I wish I knew the locations of more of these beacons! It would help me to understand when propagation windows will be open. otherwise my reception of them seems random at times.

If both beacons had the same antennas, oriented the same way and with the same transmit power then we might guess if they had the same location but I just don't know. Sometimes the hobby beacons drift quite a bit so it makes it tough to be sure. That is where the audio recordings posted to YouTube are so handy. Also, if someone outside of my area does not hear the same thing I do then I chalk it up to possible local RFI. That is where remote web receivers are so handy. They give me a chance to see how widely received the signal is at the same time as I hear it at my house.

2455
HF Beacons / Re: My Evening Beacon Log
« on: May 12, 2016, 0328 UTC »
2097.310 KHz Letter beacon A weak but readable, mild fading



2456
HF Beacons / Re: 6701.045 KHz
« on: May 12, 2016, 0326 UTC »
Keep trying! Whenever you hear Hiker I also go and check to see if I can catch it too.

2457
HF Beacons / Re: My Afternoon Beacon Log
« on: May 12, 2016, 0108 UTC »
4102.345 KHz  Windy? Great signal. Interesting pattern.
6626.400 KHz  Rainy back again, good signal
6700.940 KHz  "Dasher" with seemingly random pattern. Right now there are two seconds or more between dashes
7998.430 KHz slow dashes but not continuous. Maybe 6-7 in a row then a gap which could be fades. Good signal otherwise.

2458
HF Beacons / Re: My Evening Beacon Log
« on: May 11, 2016, 0301 UTC »
2097.310 KHz Letter beacon A just now getting audible

2459
HF Beacons / Re: My Evening Beacon Log
« on: May 11, 2016, 0217 UTC »
4094.500 KHz Letter beacon X is weak but readable with fading.

2460
HF Beacons / Re: My Afternoon Beacon Log
« on: May 11, 2016, 0016 UTC »
been camping out and waiting for Rainy to make a showing today

6626.400 KHz  Rainy, good signal now
6700.965 KHz  Dasher with unknown pattern

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