Skipp
Thanks for the suggestion.
I am not using the Kenwood TKR 720 repeater.
The TKB 720 is a base radio not a repeater.
I have it being used with at TKR 820 repeater and the
rear pinouts are similar but different.
Pin 3 on the TKB is wired for the BCD control signal.
I was hoping that someone with the schematic/manual for the TKB 720
could identify
the location inside the radio to inject the CTCSS tone that is like
where the
TKR repeater pin 3 connects.
Thanks for the help.
Byron
_____________________________________________________________________
Date: Wed, 10 Aug 2005 15:14:07 -0000
From: "skipp025" <[EMAIL PROTECTED]>
Subject: Re: RE:Kenwood TKB-720 CTCSS tone input location
I posted the information direct from a copy of the tkr repeater manual.
You appear to have the plug rewired. If you have space on the plug, add
a pin for one of the bcd signals.
If you're currently using pin 5 for audio, swap it with what your doing
on pin 3. The original pin 3 function is "wide band", the original pin
5 function is restricted. Use the wide band input.
Or bring the bcd lines out at a different location.
good luck,
skipp
> "Hellewell, Byron" <[EMAIL PROTECTED]> wrote:
> Hi Skipp
> I have pin 3 being used as one of the 4 bcd signals to select which
> channel(1-16) is being used.
>
> Thanks though.
> Byron
>
> Date: Tue, 09 Aug 2005 18:29:29 -0000
> From: "skipp025" <[EMAIL PROTECTED]>
> Subject: Re: Kenwood TKB-720 CTCSS tone input location
>
>
> Accessory Connector Pin 3 is the "DI" Modulation input (both signaling
> and audio). Pin 2 is the Line & mod inpug Ground "GND".
>
> Pin 5 is the Line input, modulation input.
>
> good luck...
>
> skipp
> www.radiowrench.com
>
> > "Hellewell, Byron" <[EMAIL PROTECTED]> wrote:
> > Hi
> > Can anyone help me with the physical location of where to inject a
> > variable CTCSS tone into the Kenwood TKB-720 radio.
> >
> > I do not have the schematic or manual just the connector pinout.
> > So a good description would help.
> >
> > I tried adding it to the audio being sent to the audio input pin
> > in the accessory connector but it must be filtered as the tone does
> > not get thru.
> >
> > The repeater version (TKR-720) has another audio input pin but
> > that pin is used for frequency selection in the TKB-720.
> >
> > Thanks
> > Byron
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