[amsat-bb] Downconverter Protection revisited

[Mike73@xxxxxxx]

I was going through some past messages on the BB and noticed a thread on 
Downconverter Protection that had some missing info that I'd like to add.

My comments are aimed at the SSB Electronic Protector. This device is 
designed to protect Downconverters in TWO ways. It first acts as a limiter 
and will handle 50 W  SSB/CW and 30 W FM
for a minimum of 10 seconds.  Used in this fashion it can be inserted 
anywhere in the coax line - at the radio or at the downconverter.  

Secondly as an ADDED BONUS:
If the protector is mounted near the radio - it will present a high VSWR 
during TX causing the radio protect circuit to shut down. This is why people 
who have TX'ed higher power than the recommended limits have had their 
downconverters saved. The above information is pretty clear on their WEB site 
at http://www.ssbusa.com 

In one post, it states that you can remove 2 coils and a cap if you do not 
need DC Feedthrough. Guess I'm confused because I can't see why anyone would 
want to disable the DC feedthrough capability since most radios have the 
ability to turn this feature on or off. In chatting with Jerry @ SSB he 
mentioned that these coils and caps are part of the protector circuit and 
should under NO circumstances be removed!

Guess the device works because I understand that to date, no one who has 
purchased the SSB Electronic PROTECTOR has informed them that they killed 
their SSB UEK-3000, DB6NT MKU24TM OSCAR or other DOWNCONVERTER by 
transmitting in to it.

73,
Mike, N1JEZ
AMSAT #29649
Local Area Coordinator
"A closed mouth gathers no feet."
----
Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org