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Re: Another newbie question



Definitely NOT happening, Antonio.  No change in background at all on SSB.

Logical conclusion is that the preamp is not getting any power (or it is
defective, but I won't assume that as starting point here).

I checked the supply, the connector (direct DC to the unit via 12V supply),
and the coax in.

So maybe I am putting the wrong power to the wrong pins, but I quintuple
checked that for this unit (A for +12V, B for ground, C is relay switch if
not using RF sensing to bypass during transmit, which I have nothing
connected to it).

I rechecked the fitting for power, it is snug.

Mark Lunday
WD4ELG
wd4elg@arrl.net
http://wd4elg.net

-----Original Message-----
From: Franklin Antonio [mailto:antonio@qualcomm.com] 
Sent: Saturday, December 20, 2008 8:07 PM
To: Mark Lunday, WD4ELG
Cc: amsat-bb@amsat.org
Subject: Re: [amsat-bb] Another newbie question

At 03:15 PM 12/20/2008, Mark Lunday, WD4ELG wrote:
>I am trying out one of the ARR mast-mounted pre-amps on 432.  I just
>listened to the SO50 and AO51 passes.  I swear I cannot hear any
difference,
>ok maybe just a bit.  But not much, not enough to make a difference.

With the receiver in SSB mode, antenna pointed at nothing, you should 
hear a substantial increase in background noise when the preamp is 
turned on.  S-meter should jump.  If not, the preamp ain't workin'.

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