SMR mobile frequencies

[AlphaFive]

Good morning, occasionally you come across something that you really should know, but you realize, geez, I'm just not sure.. here goes, Does the ability to receive S.M.R. mobile frequencies, in the 817.000 thru 823.000 MHz range depend on the make and model of the transmitting users radio? I understand the business model of a communications company selling the use of their radio systems to customers in order to operate their businesses.
I am getting a large amount of typical business two way radio traffic from 817.000 through 822.000. License holders in that range are mostly S.M.R. operators. So, depending on the radios used, is it possible to be receiving S.M.R. systems on their mobile end? I receive these transmissions on both my BCD 536, and my TRX 2. My purpose for this question is an attempt to rule out any kind of I.F. spread issues. A specific example of an S.M.R. system I would be looking at would be WRAS324, I realize the license does not display what particular brand of radios are being utilized. Thank you for your time.

 

[RFI-EMI-GUY]

If your scanner receives that range, and you antenna is high enough, you will hear subscribers transmitting on the uplink frequencies to the SMR repeaters.

Subscribers can only receive the downlink frequencies which are 45 MHz higher. So if commercial SMR subscribers have simplex talk around, which they usually do not because it is more a Public Safety thing, they will transmit and receive on the downlink frequencies. Using your block as example, 817+45 = 862 MHz to 822+45= 867 MHz,

SMR operators generally don't program subscribers for simplex talk around because they may interfere with other users or stop paying for service on the repeater when they realize they can do without.

Sent from my SM-T350 using Tapatalk

 

[AlphaFive]

S.M.R.

That was most helpful, and easy to understand.., Thanks, Lance