UHF Frequencies....

Status
Not open for further replies.

EHammarstrom

Member
Joined
Aug 3, 2010
Messages
17
Location
Raymond, NH
UHF Frequencies

It has been awhile since I programmed a UHF frequencies that has a repeater on it. There is a frequency in my are (465.150), which is the first listing and the book it is in says that is the primary/dispatch frequency. The other is 460.15.

My question is, which one do I put in? the lower or higher of the two? I want to hear both dispatch and dispatch-car / car-car
 

captclint

Mentor
Premium Subscriber
Joined
Dec 31, 2005
Messages
2,452
Location
Mountaintop, PA
It has been awhile since I programmed a UHF frequencies that has a repeater on it. There is a frequency in my are (465.150), which is the first listing and the book it is in says that is the primary/dispatch frequency.
The lower one(460.150) of a UHF pair is the repeater output, and the one you want for both base/mobile. YOu are probably looking at http://www.radioreference.com/apps/db/?cs=WNEC690 which is 17 miles from you. The FX1=input/control, and FB2=repeater out.
 
Last edited:

EHammarstrom

Member
Joined
Aug 3, 2010
Messages
17
Location
Raymond, NH
This is for captclint, but anyone may answer it.

So, if I have 460.150 & 465.150 as the frequencies, I should use the lower one to hear everything right?
 

n2nov

NYC/NNJ DB Admin
Database Admin
Joined
Dec 18, 2002
Messages
598
Location
Staten Island, NYC
On the UHF band, the spectrum is broken down like this:

450-454.9875 Repeater outputs
455-459.9875 Repeater inputs

460-464.9875 Repeater outputs
465-469.9875 Repeater inputs

470-472.9875 Repeater outputs
473-475.9875 Repeater inputs

476-478.9875 Repeater outputs
479-481.9875 Repeater inputs

482-484.9875 Repeater outputs
485-487.9875 Repeater inputs

488-490.9875 Repeater outputs
491-493.9875 Repeater inputs

494-496.9875 Repeater outputs
497-499.9875 Repeater inputs

500-502.9875 Repeater outputs
503-505.9875 Repeater inputs

506-508.9875 Repeater outputs
509-511.9875 Repeater inputs
 

SkipSanders

Silent Key
Joined
Dec 19, 2002
Messages
1,061
However, there are many users running simplex on the 'input' channels. A lot of businesses use an input/output pair as two simplex channels, and the FCC will (apparently) license a user for simplex on an input channel without them using the associated output channel. It's all up to the frequency coordinator for the area what's allowed.
 

ab8sn

Member
Premium Subscriber
Joined
Sep 3, 2006
Messages
512
Location
Camden On Gauley WV
Uhf

This is for captclint, but anyone may answer it.

So, if I have 460.150 & 465.150 as the frequencies, I should use the lower one to hear everything right?
Generally speaking yes. If a repeater is being used with that freq. pair 460.1500 is the output and 465.1500 is the input. All radios will transmit on the input freq. to access it and receive on the output freq.

You will want to enter the output freq. only to hear all of the traffic.

73s

Chad
 

b7spectra

EMS Dispatcher
Joined
Jul 8, 2002
Messages
3,151
Location
Cobb County, GA
On the 450-465 band the repeater split is 5MHz. B98.5% of the time the input is the higher frequency - in your case, 465.1500 with the repeater output being the lower half - 460.1500. In some instances, the two are bass-ackwards. For several years here in Atlanta, WSB Traffic Center was xmitting on 450.2500 with the repeater output on 455.2500. That and they had split tones as well!
 

ecps92

Member
Joined
Jul 8, 2002
Messages
11,168
Location
Taxachusetts
Actually in the 450/455 Media Spectrum there is no proper recognized band-split, some have been lucky to obtain a +/- 5 Mhz pairs, others have not.

Also the 457/467 [Burger Pairs and Cruise Ships] will be +/- 10.2250 Mhz or +/- 10.0000 Mhz

On the 450-465 band the repeater split is 5MHz. B98.5% of the time the input is the higher frequency - in your case, 465.1500 with the repeater output being the lower half - 460.1500. In some instances, the two are bass-ackwards. For several years here in Atlanta, WSB Traffic Center was xmitting on 450.2500 with the repeater output on 455.2500. That and they had split tones as well!
 
Status
Not open for further replies.
Top