[App_rpt-users] Can't Change CTCSS input threshold on RTCM menu

Skyler F electricity440 at gmail.com
Mon Jan 9 12:09:19 EST 2017


Ok, we just did a NPN transistor to short the RTCM to true ground when
voltage was on the CTCSS from the receiver. That solved the problem.

On Mon, Jan 9, 2017 at 8:47 AM, Tim Sawyer <tisawyer at gmail.com> wrote:

> I don't think that ever got implemented in hardware... there's no DAC
> there.
>
> On Sat, Jan 7, 2017 at 12:39 PM, Skyler F <electricity440 at gmail.com>
> wrote:
>
>> Unfortunately, on our CTCSS output, there is about 0.15 Volts when no
>> signal, and 5 when there is signal. The RTCM thinks that there is Always a
>> signal.
>>
>> I am trying to adjust this menu on the RTCM:
>>
>> 20 - Ext. CTCSS Input Threshold (850) (0-1023)
>>
>> When I hit 20, and then enter my new value, it is not updated, and stays
>> at 850, this number is set and won't change.
>>
>> Any thoughts? If this doesen't work, we will probably try to use a diode
>> or something to drop the voltage.
>>
>> Skyler K0WHB
>>
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>
>
>
> --
> --
> Tim
>



-- 
Skyler Fennell
amsatnet.info
KDØWHB
electricity440 at gmail.com
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