400 Mhz Range

[critter449]

I have heard that if a frequency is 455 - 459 Mhz than the repeater frequency will be exactly 5 Mhz lower.

Example: 458.500 would have a repeater frequency of 453.500 Mhz

I have also heard that if a frequency is 465 - 469 Mhz than the repeater frequency will be exactly 5 Mhz Lower.

Example: 468.500 would have a repeater frequency of 463.500 Mhz

My question is: If the frequency 458.300 is licensed by the FCC to a callsign but the frequency 453.800 does not show up on the list of frequencies assigned to that callsign by the FCC would it still be true that 453.800 would still be the repeater frequency for 458.300 but maybe just not listed as a frequency licensed to that callsign.

Thanks

 

[Astrak]

Repeater inputs could be anything, but usually are 5 higher from what I've seen. Yes repeater inputs are listed in the FCC ULS database, they won't be listed as repeater input but they are listed in there.

 

[n4yek]

My question is: If the frequency 458.300 is licensed by the FCC to a callsign but the frequency 453.800 does not show up on the list of frequencies assigned to that callsign by the FCC

As Astrack already stated, repeater inputs can be anything the user would like to use.

....would it still be true that 453.800 would still be the repeater frequency for 458.300 but maybe just not listed as a frequency licensed to that callsign.

Thanks

It doesn't have to be a repeater input; but as a rule of thumb, it is they way you were explained for that freq range.
It is possible that they have a channel in their radios for direct communications such as fireground for fire departments. They just utilize that freq for that purpose and not use a repeater since they are so close to each other when they use it.

 

[W3DMV]

On UHF (450-470Mhz), the repeater input is almost always 5mhz higher than the repeater output. When you look at the FCC data base, look at the station class. If the class is listed as "FB", thats just a
standard base station. If the class is listed as "FB2", that will be a repeater output frequency. There are other classes such as "FB6" which I think is a community repeater for lease, and "FB8" should be a trunked repeater.... Have fun... You will find licenses with both frequencies listed, but not as a "FB2"
which means there using both frequencies as simplex channels and not as a repeater.

 

[critter449]

458.300

On UHF (450-470Mhz), the repeater input is almost always 5mhz higher than the repeater output. When you look at the FCC data base, look at the station class. If the class is listed as "FB", thats just a
standard base station. If the class is listed as "FB2", that will be a repeater output frequency. There are other classes such as "FB6" which I think is a community repeater for lease, and "FB8" should be a trunked repeater.... Have fun... You will find licenses with both frequencies listed, but not as a "FB2"
which means there using both frequencies as simplex channels and not as a repeater.

What if the 458.300 is listed as an MO type frequency. What does that mean.

 

[SCPD]

What if the 458.300 is listed as an MO type frequency. What does that mean.

its is a mobile and or repeater input

 

[critter449]

Thank you kindly

Thank you all who responded to my question.

God Bless

 

[fineshot1]

450 - 470 Mhz Mobiles transmit 5Mhz up on the standard repeater inputs
450 - 454.9875 repeater outputs
455 - 459.9875 repeater inputs
460 - 464.9875 repeater outputs
465 - 469.9875 repeater inputs
470 and upward all mobiles transmit 3Mhz up on the standard repeater inputs
This is known as the UHF T band. The T stands for TV channels. This spectrum
is shared with UHF TV channels and Public Safety allocations.
470 - 472.9875 repeater outputs
473 - 475.9875 repeater inputs
etc. etc. etc. until 512Mhz

NOTE: Some repeaters will not use a standard input. This is not common but does happen
from time to time for various reasons.

 

[critter449]

Thank you Thank you Thank you

450 - 470 Mhz Mobiles transmit 5Mhz up on the standard repeater inputs
450 - 454.9875 repeater outputs
455 - 459.9875 repeater inputs
460 - 464.9875 repeater outputs
465 - 469.9875 repeater inputs
470 and upward all mobiles transmit 3Mhz up on the standard repeater inputs
This is known as the UHF T band. The T stands for TV channels. This spectrum
is shared with UHF TV channels and Public Safety allocations.
470 - 472.9875 repeater outputs
473 - 475.9875 repeater inputs
etc. etc. etc. until 512Mhz

NOTE: Some repeaters will not use a standard input. This is not common but does happen
from time to time for various reasons.

Thank you very much for the frequency break-down list you provided for me. That helps me out very much.

Thanks a bunch

 

[wlmr]

You do have some errors in your math that would definitely affect what you do/don't hear or find in a FCC search.

My question is: If the frequency 458.300 is licensed by the FCC to a callsign but the frequency 453.800

Should be 453.300, 5MHz down would be the same as subtracting 5.000 from your first number.

does not show up on the list of frequencies assigned to that callsign by the FCC would it still be true that 453.800

again, 453.300

would still be the repeater frequency for 458.300 but maybe just not listed as a frequency licensed to that callsign.

Thanks

Looks like you just got a little carried away with substituting 8s and 3s.
See if that helps in your FCC search as well as your actual listening. Good luck!

 

[ecps92]

450 Mhz and 455 Mhz News Media usually will not follow the +/- 5 Mhz

Also remember, you can use, what everyone calls inputs in simplex mode.
It's only an input if there is a Repeater on the network.

450 - 470 Mhz Mobiles transmit 5Mhz up on the standard repeater inputs
450 - 454.9875 repeater outputs
455 - 459.9875 repeater inputs
460 - 464.9875 repeater outputs
465 - 469.9875 repeater inputs
470 and upward all mobiles transmit 3Mhz up on the standard repeater inputs
This is known as the UHF T band. The T stands for TV channels. This spectrum
is shared with UHF TV channels and Public Safety allocations.
470 - 472.9875 repeater outputs
473 - 475.9875 repeater inputs
etc. etc. etc. until 512Mhz

NOTE: Some repeaters will not use a standard input. This is not common but does happen
from time to time for various reasons.

 

[critter449]

1 more thing. the 458 MHZ frequency in this case is a very low powered frequency so could it be that the 458 MHZ frequency licensed to this callsign does not use a repeater that is 5 MHZ lower. Case in point. 458.525 MHZ for the NYS Thruway does not use 453.525 MHZ as a repeater. 458 MHZ for the NYS Thruway seems to be a direct unit to unit frequency with no repeater. So could this simply mean that the 458 MHZ frequency in question does not use a repeater as is the case with 458.525 MHZ used by the Thruway. What does everyone think.

Thank you again for all your help and input I truly appreciate it.