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Dave S wrote:
> I'm installing a used Narco AT-150A transponder and have only acquired
> the pinout.. not an install manual.. (trust me.. if/when it goes, it
> will be replaced rather than repaired..)
>
> A brief/quick google search didn't bring up anything that indicated what
> size CB to use..
>
> What size CB is considered adequate for this type of transponder that
> will allow enough current but still protect the wiring from a short?
>
> Also.. those of you with dual navcoms.. do you have both nav-coms ganged
> on a single breaker or separate?
>
> It seems that most of the power draw would be during transmit only..
>
> How many folks have wiring that by passes the master switch.. to a
> clock, a cigarrete lighter/power power, a keep-alive circuit on backup
> batteries in the panel...
>
> Dave
The encoder gets power through the transponder too. The heater in the
encoder is the highest current draw out of the transponder and encoder
set-up, so the breaker and wiring has to be sized to accommodate that load.
I believe the breakers are supposed to be sized to the wire, not to the
radio. My transponder (was an AT150 with a trans-cal encoder, now an
AT165) has a 5A circuit breaker on it.
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Re: Sizing the CB needs... Homebuilt wiring too
