Repeater offsets

[WSBN819]

Hello Group,

 

I am fairly new to this world. I feel like I understand the +5 offset.  What I a confused about is in the programing some of the repeater offsets are +5, but also .25 difference. For example CH. 39 RX Freq = 462.55000, Tx Freq = 467.52500.  This is in a "greyed" out box on the program so it can't be modified.

[SteveShannon]

5 minutes ago, WSBN819 said:

Hello Group,

 

I am fairly new to this world. I feel like I understand the +5 offset.  What I a confused about is in the programing some of the repeater offsets are +5, but also .25 difference. For example CH. 39 RX Freq = 462.55000, Tx Freq = 467.52500.  This is in a "greyed" out box on the program so it can't be modified.

Almost all repeaters adhere to the +5 MHz offset, but all the regulations say is that repeaters transmit on the 462 MHz main channels and receive on the 467 MHz main channels.  Thus, repeaters transmit owners are not constrained to use exactly 5 MHz.

Unfortunately, certified GMRS tend to use the exact offset.

So, sometimes you find a repeater that is off by 750 kHz, but sticks to the channels established by the FCC.  It’s very seldom though.  I’ve mostly heard of it happening near seaports where some channels are shared with maritime communications.