[SixClub] 6 meter repeater PL tones

[donroden at hiwaay.net]

"Back in the day" ( pre-expensive cavety filters ) a repeater owner  
could PL the input and not the output.  That way, if there was any  
desense or mixing products, the repeater would not "hang-up", becaued  
the interference  DIDN'T have the correct PL to trip the COR.    
Running the same tone on the transmitter would be counterproductive to  
eliminating the "hang-up".  Repeaters that passed ALL the audio  
suffered from the same problem.... the PL passed on through.

most used a high-pass audio filter ( above the PL frequencies ) to  
eliminate the pass-through.

Don WA4NPL




Quoting "Richard J. Fiero II  W5TFW" <joeyw5tfw at gmail.com>:

> OK,
>
>  I'll go there I was  trying to stay OUT of this,.... but here is the
> arguement I was given,
>
>  it seems there are some that believe that the PL tone,.. ( on 6
> meters )....
> if they are both the same for ENCODE & DECODE,...... tend to PING / pong
> each other !
>
>   I do NOT know this to be the case,....... but thats the way it was
> explained to me..........
>
>  I am FAR from an expert, ( more like a  gossip than a  TECH,. ) but thats
> the way I have heard it,   I dont run a pl on both sides, on mine,..... and
> have never tried it at all.
>  So I do not know this to be the case at all.
>
>
>                                   Joey
>
>
>                                                       A.R.S. W5TFW
>                                                       Richard J. Fiero II
>
>                                                       www.6mt.com
>                                                       www.w5tfw.com
>
>  LIFE'S   TOUGH !
>
>  It's even tougher, if you are STUPID !
>
>                                           John Wayne
> ----- Original Message -----
> From: "Karl J. Zuk" <karlzuk at hotmail.com>
> To: <sixclub at mailman.qth.net>
> Sent: Wednesday, April 21, 2010 4:04 PM
> Subject: Re: [SixClub] 6 meter repeater PL tones
>
>
>
> My Icom IC-T7H HT (2m/440) can do separate PLs for transmit and receive.
> It doesn't make sense to require a second different PL frequency on the
> receive side since few receivers require a PL to open up unless you
> configure your receiver to require that. I more than agree. Why would you
> want to do that?  Karl Zuk  N2KZ
>
>
>
>
>
>
>> From: Cboone at earthlink.net
>> To: sixclub at mailman.qth.net
>> Date: Wed, 21 Apr 2010 14:50:06 -0500
>> Subject: Re: [SixClub] 6 meter repeater PL tones
>>
>> IF there IS a 6mrrptr doing cross tone operation, they need to have a
>> reality check....it makes NO sense to xmit a different tone than they
>> require for access (unless it’s a closed rptr in S CA...then anything goes
>> there! <G> )
>>
>> My THF6 HT can do xmit tone(T) or a different receive tone (CT) but I
>> think the transmit tone follows any selected receive CTCSS.....
>> Other than that, I too donot know of a ham rig that can do cross
>> tone....(and again, WHY???)
>>
>> Chris
>> WB5ITT
>>
>> > -----Original Message-----
>> >
>> > If you have a 6m repeater using split tones then the best you can do is
>> > to
>> > program the transmit tone required so you can at least use the repeater.
>> > Although it is much nicer in my opinion to have tone squelch down at
>> > these
>> > frequencies to keep the noise out, but if you don't have the ability
>> > there
>> > isn't much you can do.
>> >
>> > Your only other option is to buy a commercial radio and convert it to
>> > the
>> > ham band, or for some models just program it.
>> >
>> > 73,
>> >
>> > Scott KB0NLY
>>
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