[digitalradio] Re: Noise

2008-09-11 Thread George Csahanin
A couple of things from experience... First, cable internet service does use HF frequencies. I forget which direction is down there, but one is. Second, your power company is a rare find these days. Ten years back it seems most truimmed the fixit guys to cut expenses. I've gone thru it with

Re: [digitalradio] Re: Noise

2008-09-11 Thread José A. Amador
It is usually so, but there are also return channels to the headend below 54 MHz in some places. A loose conector or a broken shield might allow it to leak out. 73, Jose, CO2JA -- John Taylor escribió: Ron, as a semi direct answer to your question, as a general rule cable tv frequencies

[digitalradio] Re: Noise

2008-09-09 Thread expeditionradio
Hi Ron, Use a portable HF receiver with a whip antenna and walk around, track it down by signal strength. This will find the source 90% of the time. Take 2 ferrites and call me in the morning... Bonnie VR2/KQ6XA --- In digitalradio@yahoogroups.com, w4lde [EMAIL PROTECTED] wrote: I started to

[digitalradio] Re: Noise

2008-09-09 Thread Graham
Ron, One handy trick, the local 'radio inspcetor' for want of a better name, passed on to me was ... That the closer you get to the noise source .. the higher in frequency you can pick it up .. I had a wide band signal taking all of 145 Mhz out ... finally tracked it down, using a uhf 'tv'

[digitalradio] Re: Noise

2008-09-09 Thread John Taylor
Ron, as a semi direct answer to your question, as a general rule cable tv frequencies typically are well above hf radio. It is not impossible for there to be interference, but generally it will be some other source. One thing to remember with most cable systems is that the line and trunk amps

[digitalradio] Re: Noise

2008-09-09 Thread Bill P.
Having experienced something like this last year, a fried eggs sizzling noise I tried many recommendations. BTW, our utilities are underground. Eliminate your house as the source of the problem by running your rig from a battery and shut off the house circuit breakers, everything. Don't overlook

[digitalradio] Re: Noise Reduction and the digital modes

2007-03-03 Thread Bill McLaughlin
Hi Andy, Assume you mean DSP noise reduction...have never seen any real effect of note either way on digital modes...even on HELL. The noise blanker degrades some WSJT modes but otherwise have seen little impact on received digital decodes. On Hell, at least Feld Hell, the AGC seems to

Re: [digitalradio] Re: Noise

2006-07-28 Thread Dan Finn
. It sure rips up the PSK31 freqs.. - Original Message - From: mac2251 To: digitalradio@yahoogroups.com Sent: Thursday, July 27, 2006 4:58 PM Subject: [digitalradio] Re: Noise --- In digitalradio@yahoogroups.com, mac2251 [EMAIL PROTECTED] wrote: Anyone know what

[digitalradio] Re: Noise

2006-07-27 Thread mac2251
--- In digitalradio@yahoogroups.com, mac2251 [EMAIL PROTECTED] wrote: Anyone know what the signal is on 14071.944 ? It runs about S8 with some qsb, and sounds like high speed clicking noise. Hope its not a local problem. Mike K9HCK Its not Hell altho I did get a nice almost plaid