skipp025 wrote:
> I'm heading toward the question of "is it better to reduce
> or remove (mute) the ctcss after the phase shift or just
> not worry about it?". As mentioned in one reply... there
> might be enough time for some fast decoders to "re-lock" on
> the inverted ctcss before the tx d
[EMAIL PROTECTED] wrote:
> There is no 'reverse burst decoder' per se in a tone decoder - it is
> just driven with the out of phase energy long enough to cause it to
> close very quickly. All tone decoders react to the reverse burst, not
> just one that is specially configured to react to a rev
At 1/19/2007 18:25, you wrote:
>Actually, the electronic CTCSS decoders react about the same as the old
>reeds. The physics of the matter causes the filters that can discern
>for instance - 100 Hz from 97 Hz or 103 Hz to be very narrow, and they
>ring - even when the driving tone is removed. By rev
I believe the cap you speak of is to delay the transmitter
on/keyed for an additional time, which the mfgr specs at
200mS (milli seconds). Removing or lowering the cap value
would reduce the delayed ptt time.
The focus of my post is to ask people how their true reverse
burst decoders respond
oder that makes it
more susceptible to a reverse burst than a normal tone decoder.
73 - Jim W5ZIT
-Original Message-
From: [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Fri, 19 Jan 2007 2:27 PM
Subject: [Repeater-Builder] Re: Reverse Burst Comments (Com Spec RB-1)
--- In R
I played around with using the RB-1 board on my repeater transmitters using
motorola and several other receivers in tone squelch. Eventually I found it
was better to remove the capacitor which causes the RB-1 to send NO tone for
the last 100ms (or what ever the timing is).
--- In Repeater-Builde
> Skipp,
> I find your comments interesting in that the purpose that Motorola
> had in using "reverse burst" of the PL tone was to quickly damp the
> mechanical reed in the PL decoder to close the squelch and eliminate
> the user from hearing the noise burst. But of course you knew that.
> Howe
wa9zzu wrote:
> --- In Repeater-Builder@yahoogroups.com, "skipp025" <[EMAIL PROTECTED]>
> wrote:
>> Re: Reverse Burst Comments (Com Spec RB-1)
>>
>> If you add a circuit like the Com Spec RB-1 board to the typical
>> repeater system using a ts-32/ts-54 board... the tx ctcss is not
>> disabled o
--- In Repeater-Builder@yahoogroups.com, "skipp025" <[EMAIL PROTECTED]>
wrote:
>
> Re: Reverse Burst Comments (Com Spec RB-1)
>
> If you add a circuit like the Com Spec RB-1 board to the typical
> repeater system using a ts-32/ts-54 board... the tx ctcss is not
> disabled or removed before the
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