public:radio:dormant:4m_fm
Table of Contents
4m FM
Low Band PMR and 4m Ham band
Background
The PMR radio system for the Shetland Islands Council (SIC) Roads dept. is being re-engineered (summer 2023) with new base station radios and a new IP based microwave link network.
I thought I would set myself up with the ability to monitor, and test coverage, both mobile and at home. I found my old FM1100 and also was given a selection of other ones by SIC, as well as the PDP to program them.
My plan is to configure the radios for both 4m ham band and SIC roads network.
Frequencies
SIC Roads PMR
| Site | Base TX | Base RX | CTCSS |
|---|---|---|---|
| Bressay | 85.425 | 71.925 | 103.5 |
| Weisdale | 85.350 | 71.850 | 103.5 |
| Collafirth Hill | 85.225 | 71.725 | 103.5 |
4m Amateur Band
- 12.5kHz spacing
- 70.3000
- 70.3125
- 70.3250
- 70.3375
- 70.3500
- 70.3625
- 70.3750
- 70.3875
- 70.4000
- 70.4125
- 70.4250
- 70.4375
- 70.4500 = FM Calling Channel
- 70.4625
- 70.4750
- 70.4875
Business Radio Simple Light
- 5 channels
- 77.6875
- 86.3375
- 86.3500
- 86.3625
- 86.3750
— John Pumford-Green 20/05/23 12:25
Further Information
public/radio/dormant/4m_fm.txt · Last modified: 06/03/25 06:49 GMT by 127.0.0.1