Frequency problems

[Emt812]

Having a problem scanning a certain channel. It is for an ambulance district in my county.
The frequency according to the FCC is supposed to be transmitted on 156.120. I added this frequency to my scanner and I can never pick up the audio while no one else in the area seems to have any problems. Well I was sitting at work where we have a scanner and I heard audio on that channel so I looked at the LCD on the workplace scanner and it said that the frequency was actually 156.125.

Later, I went home and tried to add 156.125 to my home scanner and my scanner (PRO-163) does not accept that frequency. It wants to round down to 156.120. So, I tried rounding up to 156.1275. My scanner took that frequency but I'm still not getting any of the radio traffic. Is there a way to tweak the frequency of the PRO-163 just .005 kHz? Why does the FCC frequency and the actual recieve frequency (at least according to the work place scanner) differ?

Thank you in advance

 

[captclint]

Having a problem scanning a certain channel. It is for an ambulance district in my county.

Later, I went home and tried to add 156.125 to my home scanner and my scanner (PRO-163) does not accept that frequency. It wants to round down to 156.120. So, I tried rounding up to 156.1275. My scanner took that frequency but I'm still not getting any of the radio traffic. Is there a way to tweak the frequency of the PRO-163 just .005 kHz? Why does the FCC frequency and the actual recieve frequency (at least according to the work place scanner) differ?

Differences of 5kHz should not make any difference for reception unless the signal is VERY weak. Perhaps you have a PL/DPL tone that is incorrect. The FCC info is correct, so the work scanner may not have the step functions set, or may be an older scanner that does not have 7.5Mhz step function.

Here is your step function: Easier to Read Pro-164/163 PSR300/C/400/C Scanner Manual

 

[rfradioconsult]

156.120 MHz should be the correct frequency, not 156.125. The original 30 KHz steps were:
156.03
156.06
156.090
156.120

Later the spacing was reduced to 15KHz which added

156.045
156.060
156.075
156.090
156.105
156.120
156.135

On Jan 2013 when narrow band becomes the law of the land the steps will be reduced by half again to 7.5 KHz spacing. This is confusing to a lot of folks, but VHF Part 90 channel spacing will be 7.5 KHz

 

[freqs]

I dont have a answer on your issue but its just a tac freq if your looking for dispatch it shows 155.2050