Input/Output

[GottIstGutig]

I know with UHF the input is 5 MHz higher than the repeater output, but how does it work for all the other bands?

 

[DaveH]

If you are speaking of the U.S., +5MHz is standard for 450-470, but +3MHz in the 470-512 band. In the 851-866 band, separation is -45MHz, but in the 900MHz band it is -39MHz. In the VHF bands there is no standard separation possible, except the old mobile phones used +5.26MHz; and the marine band.

In Canada, UHF separation can be 5.000, 4.9875, or 5.0125MHz. In the 420-430MHz band, I believe +4.000 is used also.

Dave

 

[N_Jay]

I know with UHF the input is 5 MHz higher than the repeater output, but how does it work for all the other bands?

800 MHz is 45 MHz (Base TX High)
900 MHz is 39 MHx (Base TX High)
470-512 is 3 MHz (Base TX Low?)
VHF is mixed all over the place.

 

[Voyager]

If you are speaking of the U.S., +5MHz is standard for 450-470, but +3MHz in the 470-512 band. In the 851-866 band, separation is -45MHz, but in the 900MHz band it is -39MHz. In the VHF bands there is no standard separation possible, except the old mobile phones used +5.26MHz; and the marine band.

In Canada, UHF separation can be 5.000, 4.9875, or 5.0125MHz. In the 420-430MHz band, I believe +4.000 is used also.

Dave

There are also standards in most ham bands.
29 MHz (10M) is -100 kHz.

50 MHz (6M) has no standard - common offsets are -500 kHz, -1 MHz, -1.6 MHz, and -1.7 MHz

144-146 MHz (2M) is +/- 600 kHz with a little + 1MHz in the mid-146 MHz range,

220 MHz (1.25 M) is all -1.6 MHz

440 MHz (70 CM), like 460 MHz, is all +5 MHz, but some areas do use some -5 MHz offsets between 445 and 450 MHz.

In the commercial bands below 200 MHz, there are no standards.

Joe M.