I've been fighting this issue for a while now. I've tried some bandaids to deal
with it, tried multiple repeater controllers (including one I designed myself
with an ATMEGA328 Microcontroller (I'll probably be releasing this design as
open source coming up)... and I'm fighting the same problem
Hi Josh,
Instead of resistors, try diodes in series. Each Diode will drop your
voltage. I have series a couple to get rid of standing voltage, especially
if you are down to a half volt or so.
73 JIM
On Mon, Jun 21, 2010 at 11:57 AM, Josh josh.kit...@gmail.com wrote:
I've been fighting this
At 08:57 AM 6/21/2010, Josh wrote:
When the squelch is closed, I get right around 8 volts, taken from
pin 8 of the modified mobile audio/squelch board - the tried and
true process just about everybody uses. When the squelch opens,
I'm at not ground potential, but right about half a volt.
: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of James Cicirello
Sent: Monday, June 21, 2010 12:43 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Micor COS issues continuing
Hi Josh,
Instead of resistors, try diodes in series
-Builder@yahoogroups.com
Subject: [Repeater-Builder] Micor COS issues continuing
I've been fighting this issue for a while now. I've tried
some bandaids to deal with it, tried multiple repeater
controllers (including one I designed myself with an
ATMEGA328 Microcontroller (I'll
To: Repeater-Builder@yahoogroups.com
Sent: Mon, Jun 21, 2010 9:57 am
Subject: [Repeater-Builder] Micor COS issues continuing
I've been fighting this issue for a while now. I've tried some bandaids to deal
with it, tried multiple repeater controllers (including one I designed myself
Here's how we've designed our controllers' COR, CTCSS, and
logic inputs for many years: Feed the COR signal to the top
of a voltage divider. The upper resistor is 10K and the lower
is 4.7K. Feed the junction of the divider to the base of an
NPN such as a 2N3904, 2N, etc. You'll
Hi Jeff,
Here's how we've designed our controllers' COR, CTCSS, and
logic inputs for many years: Feed the COR signal to the top
of a voltage divider. The upper resistor is 10K and the lower
is 4.7K. Feed the junction of the divider to the base of an
NPN such as a 2N3904, 2N, etc.
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