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Post by spyderman188 on Jun 9, 2006 15:29:02 GMT -5
I have a quick radio question for you. why do some departments have two different frequencys for one channel, how do I enter it or is it not nessecary. If i have to enter them which is transmit and which recieve. ( lower=tx higher=rx ?). Thanks.
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Post by volffemt on Jun 9, 2006 16:06:25 GMT -5
Repeaters operate on 2 frequencies, the input and the output. The mobiles and portables (and sometimes the base, if using a control station) transmit on the input, its received by the repeater on a tower and broadcasted at a higher height & power on the output freq.
All you will need to listen to is the output freq.
Example, Hauppauge uses 481.5875 as the input (if you are really close to the units, you will hear them). Their repeater output is 478.5875, this is what you want to listen to.
450-470mhz range, the output is 5 steps higher than the input, a 460mhz repeater uses a 465mhz input.
470-512mhz range is 3 steps higher, 470mhz output would use 473mhz as an input.
Hope this helps.
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Post by TRUCK1LT on Jun 9, 2006 20:56:42 GMT -5
YEA !!!!! What he said !!!!  |
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Post by TOWERING ABOVE THE REST...!! on Jun 10, 2006 16:00:50 GMT -5
does any one know the fdny repeater frequencies???
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Post by TRUCK1LT on Jun 10, 2006 18:34:39 GMT -5
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Post by volffemt on Jun 10, 2006 19:21:54 GMT -5
BFD Jr,
FDNY:
Manhattan - 154.250
Queens - 154.400
Brooklyn - 154.370
Bronx & Staten Island (shared) - 154.190
Citywide (wont hear too much) - 154.430
All use a PL of 186.2
Depending on where you live, with a decent antenna you should be able to hear them, as they're very high powered
FDNY Ems uses a different UHF radio system.
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Post by TOWERING ABOVE THE REST...!! on Jun 12, 2006 10:47:37 GMT -5
thanks..!!!
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Post by FIRE07 on Jun 12, 2006 19:21:22 GMT -5
Citywide (wont hear too much) - 154.430 All use a PL of 186.2 Depending on where you live, with a decent antenna you should be able to hear them, as they're very high powered FDNY Ems uses a different UHF radio system. if you have a portable, buy an AC adapter for it. the house's wiring acts as an additional antenna, a weak one, but it will still improve your reception. Except for brooklyn, i often get bad reception. and on citywide you hear complete sizeups and progress reports, much better reception than on boro channels. |
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Post by volffemt on Jun 13, 2006 19:34:25 GMT -5
if you hear citywide, you should hear manhattan, the antennas are located on the same tower (strangely enough, the tower for citywide & manhattan is in L.I. City Queens @ the FDNY Shops off the LIE)
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