Re: Topband: Power Line Noise Direction Finding

I have a similar noise-finding arsenal Don. My VHF tool is a Moxon rectangle which has a very deep narrow null. I mounted it to a short section of broom handle so I can hold it overhead and turn the null, as I listen on an HT in AM mode. For further pinpointing within 30 or40 feet of the utilit

Re: Topband: Power Line Noise Detecting

I use an old CATV RF sniffer that was $10 at a hamfest, they got replaced whenever the systems added more bandwidth and are used by the techs to certify a new build or later to do leakage tests. Tuneable, AM/FM detectors and an analog meter. Mine goes to 400 MHz and has found every problem Ive

Re: Topband: dominating the spectrum

Is anyone using these ruggedized Freescale LDMOS transistors in any new amplifier designs? Mike N2MS ___ Stew Perry Topband Distance Challenge coming on December 29

Topband: Horizontal Loop Performance??

Greetings All!   I am in Saudi Arabia and had the opportunity to throw up some wire antennas.  I put up 30' of fiberglass mast on my 25' roof and installed an 80m INV VEE fed with open wire line, straight to tuner.  Hears extremely well.  Cannot transmit until I get a license, which is in the w

Topband: Another take on power line noise hunting

I've been following this discussion with interest. I spent the summer tracking down more than 20 sources of power line noise. As an offshoot of that I've made it my mission to help clean up RFI in my little corner of the world. I've been slowly drifting away from DXing and this has turned out t

Re: Topband: Another take on power line noise hunting

Hi Paul, You would helpful a step attenuator, in 1 dB steps, to be a valuable addition to your tool bag. There are situations where it helps isolate to an individual pole. Its much more accurate than an S-meter. Something like this, or many other alternatives: http://www.ebay.com/itm/Coaxial

Re: Topband: Another take on power line noise hunting

Similar observations here Paul in my never ending battle to keep on top of the noise situation in my rural area - mainly 14.4 kv distribution and some 25kv 3 phase stuff. Many sources top out above 135 mhz but well below 450 so a yagi in between is certainly helpful. Like a ch 13 tv yagi or som

Re: Topband: Another take on power line noise hunting

In the vehicle I often like to use an old (i.e. analogue and inexpensive) spectrum analyser like some of the portable Texscan CATV ones. As CATV companies have transitioned from NTSC to QAM channel line-ups, high quality field analysis meters have been showing up on the used market in big numb