[RFI] Working with Utilities

[Jim Brown]

A simple setup I've used for chasing impulse noise consists of both a 
mobile rig and a talkie programmed for AM at around 160 MHz, 200, 300, 
500, and the highest frequency at which they work (the Kenwood TH-F6A 
talkie goes to about 560 MHz). I drive around with the mobile rig and 
mag-mount vertical set to 160MHz until the signal is loud, then move 
higher in frequency as I get closer. When I get close enough, I switch 
to the talkie at it's highest limit, or around 440-450 MHz where my 
small Yagi is tuned.

Without the Yagi, I'll use a duck on the talkie, holding it against my 
body to form a half-space antenna.

73, Jim K9YC

On 9/11/2021 11:04 AM, Don Kirk wrote:
> I also have 430 MHz portable DF gear including a portable 430 MHz Yagi, and
> what I have found is that 136 MHz DF gear is more than adequate in 95 or
> greater percent of the time as long as appropriate attenuation is used.
> It’s easy for folks to acquire cheap 134 or 136 MHz portable AM receivers
> (their 2 meter HT might have that capability and if not then a cheap
> portable analog police scanners work great because they typically have
> coverage down in the aviation band where AM is used).