I also recall that the source Z of CAS and RUS isn't the same (I'm pretty
sure CAS is lower than RUS), maybe somebody can confirm. And doesn't RX
MUTE only source current, not sink? I thought there was a protection diode
in series with the "exposed" RUX MUTE line to prevent someone from sourcing
current back into it, but maybe I'm thinking of a different radio (Delta?).
Don't have a manual in front of me, maybe someone else can confirm or deny.
--- Jeff WN3A
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of [email protected]
> Sent: Thursday, December 17, 2009 11:40 PM
> To: [email protected]
> Subject: Re: [Repeater-Builder] GE MastrII CAS vs. RUS vs. RX Mute?
>
>
>
> At 12/17/2009 18:54, you wrote:
> >After looking over the LBIs and performing a few
> conversions, I have a
> >question regarding which everyone feels is the best source for a CAS
> >signal into a repeater controller - CAS, RUS, or RX Mute.
>
> I used to use RUS, until I discovered that the attack
> (invalid to valid
> transition) is significantly delayed, around 50 ms. CAS does
> not have this
> delay, & I find that the fast squelch performance is better
> because the
> chopping is less pronounced. This is because even though the
> squelch does
> briefly close on signal nulls during mobile flutter, it opens
> much faster,
> so the chopping isn't as noticeable.
>
> I still use Micor squelch boards in all my UHF MVPs & Mastr
> II RXs, but I
> don't bother on the VHF radios as I find the Mastr II squelch
> works well
> enough.
>
> Bob NO6B
>
>
>
>
>
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>
