Finding the repeater freq from input freq?

Finding the repeater freq from input freq?

Post by Doug Mas » Fri, 22 Nov 1996 04:00:00

Using my handy Optoelectronics Scout, I was able to snatch the input freq
from one of the guys in the parking garage.  Ok, so it wasn't quite that
sneaky -- I went up to him and asked him to key it and I showed him how
the Scout could pick it up.

Anyway, I now have the input freq for a repeater (I know that they use one).
Is there any standard freq offset for repeaters or could it just be random?
Does regular business band stuff usually have a standard offset?

...if it could be anything, would it be safe to guess that the last few
digits would be the same?  (ie: 156.225 input, 156.525 repeater?)

Any veterans out there have an idea?

Thanks!

--Doug

--


TZ250, RS250R, CBR900RR, etc.                   AFM#954, WSMC#554, GLRRA#54

 
 
 

Finding the repeater freq from input freq?

Post by D Sta » Fri, 22 Nov 1996 04:00:00



>Anyway, I now have the input freq for a repeater (I know that they use one).
>Is there any standard freq offset for repeaters or could it just be random?
>Does regular business band stuff usually have a standard offset?

VHF high and low have no standard repeater offset, except in
the ham bands where the offset is 1 MHz on 10 meters (29
MHz) and 600 kHz or .6 MHz on 2 meters (146 MHz area).

UHF has two offsets, 3 and 5 MHz, depending on which
subband.  Hams use 5 MHz on the 70cm (440 MHz) band, as do
commercial users on 450-454 and 460-464 MHz.  They use 3 MHz
in the "T-band" above 480 MHz.

800 MHz has a 45 MHz offset.

73 de Dave, NF2G

 
 
 

Finding the repeater freq from input freq?

Post by Evan Pla » Mon, 25 Nov 1996 04:00:00

UHF is usually 5 megs' lower from 450 - 479, so if an input is 455,
the output is 450. 480+ is usually 3 megs. However, VHF has no
standard., since it's so full. No way of finding it out.. BUT you can
now scan around that freq range... =)


>Using my handy Optoelectronics Scout, I was able to snatch the input freq
>from one of the guys in the parking garage.  Ok, so it wasn't quite that
>sneaky -- I went up to him and asked him to key it and I showed him how
>the Scout could pick it up.

>Anyway, I now have the input freq for a repeater (I know that they use one).
>Is there any standard freq offset for repeaters or could it just be random?
>Does regular business band stuff usually have a standard offset?

>...if it could be anything, would it be safe to guess that the last few
>digits would be the same?  (ie: 156.225 input, 156.525 repeater?)