[HCRA] INformation needed:

Tue, 22 Jul 2003 16:44:46 -0400

Yessir!  All correct information, but let me just add in that the IRLP 
node 7270 also
transmits with a PL of 114.8, so you can also use tone-squelch on this 
frequency (the
147.105 repeater in Palmer also transmits a PL).
    You don't need to have the PL set on recieve  (tone-squelch) to hear 
the transmissions.
If you DO have it set however, you will ONLY hear transmissions from the 
node, and not
any of the "transient" signals that Rick spoke of below.
    You MUST have the "TONE" set on transmit, however, to open the 
squelch on the IRLP
radio.

    Please feel free to use the IRLP node, that's why its there, and 
thanks for asking
about its use, I"m sure there were other users with the same question.

    Other things to remember about using the IRLP:

1)  You must ID as prescribed by FCC rules, even if only using DTMF tones to
    turn the node on or off.  If you are turning on the node only to 
listen, then it   
    makes sense to ID first while turning it on, and you are done, at 
least until you
    xmit again, IF you xmit again.

2)  When sending DTMF tones, you need to key and hold the mike and then
    send all your tones in one transmission.  

3)  You are on a simplex node, remember that you may not hear other 
local users,
    and they may not hear you, but the node (and therefore the remote 
station) can.
    If you hear the node ID with only a "Kx1x IRLP node", and no message 
after,
    then it is in "connected" mode, and may be in use by another local user.
        There is no courtesy tone, or easy way to determine if you are 
reaching the
    IRLP node without turning it on, or sending #411.  (#411 will give 
you the
    current state of the node, either "link off" or "connected to node 
####")
    (( Remember, you still need to ID within 10 minutes, even if just 
sending
        a #411 )).
        Also, because it is a simplex node, be sure that your radio is 
not changing
    your transmit frequency, as you would with a repeater in DUPLEX mode.

        Kerchunking the IRLP node doesn't give you any indication of 
anything.

4)  Always leave a 2 second pause after the remote station has unkeyed, 
to allow
    other users to jump in and/or log off of the IRLP system.

5)  Always wait 1 to 2 seconds after keying up, before you begin 
speaking.  Otherwise,
    some of the beginning of your transmission may be lost by internet 
delay and the time
    it takes down-stream repeaters to open.

6)  Though connections will time out in 4 minutes to regular nodes, or 1 
hr. for  reflectors,
    it is common courtesy to manually turn the node off when you are 
through.  If you
    happen to lose connectivity to the node while it is still on, no big 
deal, it will time
    out.  To disconnect from a node, press #73 when the IRLP node is NOT 
transmitting.

I hope you enjoy using the IRLP node.  Feel free to post questions here 
on the
HCRA list, or directly to me.

'73 de Kx1x,
JPise

Rick Lindquist, N1RL wrote:

>______________________________________________
>-------Hampden County Radio Association-------
>-----------e-mail list (reflector)-------------
>______________________________________________
>Greetings!
>
>Eric's got it right. A "PL" (which stands for the Motorola trade mark
>"Private Line") or "CTCSS" tone (CTCSS stands for "continuous tone-coded
>squelch system") tone is a subaudible audio note that permits access to
>a repeater system (ie, the repeater receiver's squelch will not open
>unless the signal is accompanied by the CTCSS/PL tone). The tone
>"number," shown in the repeater directories, is the audio frequency of
>the tone in hertz. I'll bet Jim's repeater manual says something about
>CTCSS but not PL, because that's a trade mark.
>
>The original idea behind CTCSS tones on repeater inputs was to eliminate
>annoying (and often inadvertent) "kerchunking" by transient signals on
>the input channel, but many repeaters have CTCSS tone enabled that
>probably don't need it. Many transceivers allow the user to set a CTCSS
>tone for receive as well as transmit, but this practice is not common in
>Amateur Radio. Several transceivers have "tone scan" capability that can
>read the tone when another station is transmitting and you don't have
>anywhere to look up the CTCSS frequency.
>
>"Subaudible" is a misnomer really, because the tone frequencies all are
>within the normal range of human hearing. They're only "subaudible"
>because you cannot hear them via most repeaters and/or transceivers.
>
>See http://www.eecis.udel.edu/~dra/pl.html for more info.
>
>Don't confuse CTCSS/PL tones with DTMF (dual-tone-multi-frequency) tones
>that often are used to access such things as autopatch, control repeater
>functions and to "dial" telephone numbers. Different animals.
>
>73 Rick N1RL
>
>-----Original Message-----
>From: [email protected] [mailto:[email protected]] On
>Behalf Of Eric Richardson
>Sent: Monday, July 21, 2003 9:43 PM
>To: Jim Harrington; HCRA
>Subject: RE: [HCRA] INformation needed:
>
>______________________________________________
>-------Hampden County Radio Association-------
>-----------e-mail list (reflector)-------------
>______________________________________________
>Jim,
>
>	If my teaching is correct, a PL tone is a sub-audible tone that
>is needed
>to transmit on a repeater. Some repeaters have PL tones, some don't.
>Usually if you do a lookup for a repeater, if it is an open repeater, it
>will say the frequency for the PL tone. I just did a look up for the PL
>tones for the W1TOM repeaters and there are no PL tones needed. If you
>would like an example of a PL tone tune into the 147.105 repeater
>(W1OBQ)
>in Palmer (my QSO). The PL tone for that is 162.2. I looked this info up
>on
>the New England Repeater Directory which can be found at
>http://www.nerepeaters.com/2m.htm. If some of the more knowledgable
>members
>tell me the rest about the Palmer repeater it would be appreciated.
>
>73's
>
>Eric Richardson
>[email protected]
>KB1JVI
>
>
>  
>
>>[Original Message]
>>From: Jim Harrington <[email protected]>
>>To: HCRA <[email protected]>
>>Date: 7/21/2003 7:02:09 PM
>>Subject: [HCRA] INformation needed:
>>
>>______________________________________________
>>-------Hampden County Radio Association-------
>>-----------e-mail list (reflector)-------------
>>______________________________________________
>>Hi Guys & Gals..
>>
>>    On our IRLP site it says " This is the KX1X node #7270, simples 
>>repeater on 146.46 MHZ with a PL of  114.8." So what's a PL? Some
>>    
>>
>times 
>  
>
>>we for got there are newbies in the crowd? I looked in the book that 
>>came with the Transceiver I own and it doesn't say a thing on PL. I
>>    
>>
>got 
>  
>
>>the repeater on the dial, and heard an add for the June Field Day..
>>    
>>
>PTT 
>  
>
>>and got a TX signal but not knowing a PL, I didn't go further.. So
>>    
>>
>Help!
>  
>
>>Thanks
>>Jim
>>
>>------Hampden County Radio Association-------
>>An ARRL Special Services Club for over 50 years
>>------------http://www.hcra.org------------
>>________________________________________________________
>>
>>To unsubscribe from the list please visit:
>>    
>>
>http://mailman.qth.net/mailman/listinfo/hcra
>  
>
>>Address any comments to:
>>-Jim, KK1W  -  [email protected]
>>_______________________________________________
>>HCRA mailing list
>>[email protected]
>>http://mailman.qth.net/mailman/listinfo/hcra
>>    
>>
>
>
>------Hampden County Radio Association-------
>An ARRL Special Services Club for over 50 years
>------------http://www.hcra.org------------
>________________________________________________________
>
>To unsubscribe from the list please visit:
>http://mailman.qth.net/mailman/listinfo/hcra
>
>Address any comments to:
>-Jim, KK1W  -  [email protected]
>_______________________________________________
>HCRA mailing list
>[email protected]
>http://mailman.qth.net/mailman/listinfo/hcra
>
>------Hampden County Radio Association-------
>An ARRL Special Services Club for over 50 years
>------------http://www.hcra.org------------
>________________________________________________________
>
>To unsubscribe from the list please visit: http://mailman.qth.net/mailman/listinfo/hcra
>
>Address any comments to:
>-Jim, KK1W  -  [email protected]
>_______________________________________________
>HCRA mailing list
>[email protected]
>http://mailman.qth.net/mailman/listinfo/hcra
>
>
>  
>