Batboard

I was wondering if there is an easy way to determine a VHF TX frequency when all you know is the Rx frequency. I know with UHF the TX frequency is normally 5mhz higher than the RX frequency. Any help is greatly appreciated!

There are no standard offsets for VHF. One might be 800 kHz, and the next one might be 5 mHz or so.

Tom in D.C. wrote:There are no standard offsets for VHF. One might be 800 kHz, and the next one might be 5 mHz or so.

Is there a way to find the input frequency using a scanner? A PRO-106 to be exact.

If it is a public safety freq. look up the owner's licensing on the FCC data base.

Jason

KB9KST wrote:If it is a public safety freq. look up the owner's licensing on the FCC data base.

Jason

I tried that. It's the National Park Service in my area. When I look up the frequency the only match is in the state of Wyoming and I am in Ohio.

fallspolice wrote:

KB9KST wrote:If it is a public safety freq. look up the owner's licensing on the FCC data base.

Jason

I tried that. It's the National Park Service in my area. When I look up the frequency the only match is in the state of Wyoming and I am in Ohio.

Now that you say that, I don't think looking up NTIA frequencies in the FCC database will help much. With your Pro106 you could probably use Spectrum Sweeper if you were close enough to a mobile unit to find the offset.

try 0.775 here in the north cascade they use an input of 165.975 and the output is 166.750 I would try - 0.775 from the output.