Confirm PL Tones and Frequencies
- Thread starter Joseph11
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I would say thats a problem on jems 4 if different agencies are using different pls!
transmit and recieve? IF i don't transmit a pl, will somebody with the recieve pl of 131.8 recieve me?
DJ88
Member
That's the whole purpose of having PL tones, to prevent transmissions using CSQ or other PL/DPL tones from being received.
SCANdal
Silent Key
A mess, even after all this time
APW,
Yes, 153.785, with PL 131.8 (SPEN/JEMS4), is an interagency frequency - but only within the state of New Jersey. Do not expect to be able to talk to out-of-state agencies on that frequency, unless they have been specifically invited onto the channel by a bordering New Jersey agency.
On the SPEN system, out-of-state agencies can be on 155.475 (csq) - Police Nationwide, if they even have it in their radios (note that some agencies over the border can come up on SPEN1 directly - thus defeating the purpose of SPEN2).
On the JEMS system, JEMS2 (155.340, csq) and JEMS3 (155.280) are often common channels with surrounding states, so out-of-state agencies may be able to come up on those channels. This lack of established commonality for EMS agencies across state borders is the reason why oftentimes bordering agencies will just exchange JEMS1 frequencies/talkgroups for interop purposes.
SCANdal
PS:
jaymatt, I agree. If someone is programming a scanner...then yes, if you want to save a channel, program 153.785 without a PL (csq) if you want to hear all the users on the frequency. If programming an agency two-way radio, PL is a must on rx, to avoid hearing small departments using the frequency for whatever they want locally.
codethree said:
APW,
Yes, 153.785, with PL 131.8 (SPEN/JEMS4), is an interagency frequency - but only within the state of New Jersey. Do not expect to be able to talk to out-of-state agencies on that frequency, unless they have been specifically invited onto the channel by a bordering New Jersey agency.
On the SPEN system, out-of-state agencies can be on 155.475 (csq) - Police Nationwide, if they even have it in their radios (note that some agencies over the border can come up on SPEN1 directly - thus defeating the purpose of SPEN2).
On the JEMS system, JEMS2 (155.340, csq) and JEMS3 (155.280) are often common channels with surrounding states, so out-of-state agencies may be able to come up on those channels. This lack of established commonality for EMS agencies across state borders is the reason why oftentimes bordering agencies will just exchange JEMS1 frequencies/talkgroups for interop purposes.
SCANdal
PS:
jaymatt, I agree. If someone is programming a scanner...then yes, if you want to save a channel, program 153.785 without a PL (csq) if you want to hear all the users on the frequency. If programming an agency two-way radio, PL is a must on rx, to avoid hearing small departments using the frequency for whatever they want locally.
Re: A mess, even after all this time
Aye Carumba :!:
El Mucho de Info :shock:
Gracias Si :lol:
APW
:roll:SCANdal said:
Aye Carumba :!:
El Mucho de Info :shock:
Gracias Si :lol:
APW
Hi guys,
Why all the confusion? Since mobiles change "channels" by switching PLs it makes no sense to use them, carrier squelch (CS) allows you to hear ALL the action on common (shared) channels.
On the Amateur VHF/UHF repeaters they often use different PLs on receive and transmit, different PLs on satellite receivers and even anti-PL where co-channel interference is a problem. Since most repeaters within range use PL access I must transmit the proper one but in few cases I use PL receive. Like all others they are coordinated so PL is hardly ever needed, co-channel repeaters are mostly out of range and for simplex and mobiles it's strictly out of the question. Don't forget those you're arguing over are simplex frequencies.
Why all the confusion? Since mobiles change "channels" by switching PLs it makes no sense to use them, carrier squelch (CS) allows you to hear ALL the action on common (shared) channels.
On the Amateur VHF/UHF repeaters they often use different PLs on receive and transmit, different PLs on satellite receivers and even anti-PL where co-channel interference is a problem. Since most repeaters within range use PL access I must transmit the proper one but in few cases I use PL receive. Like all others they are coordinated so PL is hardly ever needed, co-channel repeaters are mostly out of range and for simplex and mobiles it's strictly out of the question. Don't forget those you're arguing over are simplex frequencies.
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