[TowerTalk] Topband: RFI

[Steve Maki]

Many years ago when I had a bad location for line noise, I used a 
wideband scanner that could be kept in AM mode over the whole range of 
frequencies, and a small VHF/UHF TV log-yagi with a battery powered 
preamp. As you get closer and closer to the noise source you can start 
picking up the noise up around 450 MHZ and higher, and it's much easier 
at higher frequencies to pinpoint the exact pole. Never tried an 
ultrasonic RX, but that sounds like it should work well. When you get on 
top of the source, you can often hear it plain as day with no device at 
all, just your ears.

Yes I was asked a couple times to remove myself from someone's property :-)

-Steve K8LX

On 06/25/20 16:25 PM, Don Kirk wrote:
> Hi Fred,
> 
> Do you have a police radio scanner that covers the aviation band?  If so it
> makes for a great 136 MHz AM receiver that can be very helpful in narrowing
> in on the faulty pole especially when a portable directional antenna is
> connected to it (especially if you can throw in 20 or 30 db of attenuation
> when very close to the pole).
> 
> HF makes identifying the faulty pole a very difficult if not impossible
> task.