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Re: Protectors for downconverters



Hi Joe,
   well as long as you don't exceed the power rating the Down East Microwave one is a much better way to go... your rig gets to see
a 50 ohm load and your downconverter is protected... too bad the 910 puts out too much rf for the Down East one...
   The SSB unit is just 6 1n914 diodes,2 sets 3 diodes in series to ground, and then a few caps and 3 coils, you could remove 2 of
the coils and a cap if you don't need it to feed dc voltage through it, it is essentially just rectifying the rf to ground , i.e.
shorting the rf so the rig sees a horrible swr...

73's
Kevin
WA6FWF




----- Original Message -----
From: "Joe W2KJ" <w2kj@earthlink.net>
To: <amsat-bb@AMSAT.Org>
Sent: Friday, September 13, 2002 2:38 PM
Subject: [amsat-bb] Protectors for downconverters


> Just recently there were some postings to the BB about RF
> protectors for AO-40 downconverters and of course I failed to
> save the info.  These units would save the downconverter from
> inadvertent transmission of RF power into them.
>
> Believe the unit from SSB electronics was mentioned along with
> a unit described to have a more "elegant" design from Down
> East Microwave.
>
> I located the SSB Electronics protector and it indicates it
> will protect downconverters from inadvertent RF power
> transmission levels of over 50 watts SSB.
>
> I can't find the Down East version on their website.  Can
> someone provide me with additional info on this unit?
>
> Will both of these protectors work when installed at the 2m
> output spigot on the IC-910H at circa 100 watts??
>
>                                     73, Joe W2KJ
>
>
> ----
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