Return to KLUBNL.PL main page
| To: | [email protected] |
|---|---|
| Subject: | LF: Re: Carriers |
| From: | [email protected] |
| Date: | Sat, 25 Aug 2001 07:06:32 EDT |
| Reply-to: | [email protected] |
| Sender: | <[email protected]> |
|
Hi Mal and Alan,
I can strongly confirm such QRM from modern TV sets. That also seems to be the reason why some days I "don't have ears" when operation from DF0WD. On a spectrogram, you can see the 50- or 100-Hz-spaced lines drifting around slowly. Also confirm the range of these nasty carriers: they can indeed exceed the range of 100 yards (~meters). The clubstation DF0WD is about 150mtrs away from the next house, but a part of QRM seems to correlate with the TV prime time. On the waterfall its impressive to see a group of carriers disappearing instantly after the main evening news at 20:15 local. I guess most of the QRM travels over the mains supply lines. I already considered building a battery-powered remove RX with a 70cm-FM-link to the main station (using a cheap 70cm-LPD handy). The problem is finding a quiet remote RX side where the RX cannot be vandalized or stolen. As alternative, I am very curious about Steve's and Rob's noise canceller experiments. IMO, cancelling more than one QRM source is a tough job. Good luck to all, hope to c u on 136kHz, Wolf DL4YHF. |
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | LF: Re: carriers, Dave Sergeant |
|---|---|
| Next by Date: | Re: LF: Re: carriers, Steve Rawlings |
| Previous by Thread: | LF: re Carriers, Alan Melia |
| Next by Thread: | LF: Re: Re: Carriers, Vernall |
| Indexes: | [Date] [Thread] [Top] [All Lists] |