[amsat-bb] Re: Ts2000 with external preamps

Vu Trong Thu thuvt at fpt.edu.vn
Fri Aug 24 18:13:09 PDT 2012

I have been using external (mast mounted) preamps for 2m and 70cm from ARR
with my TS-2000 for 2 years and quite happy with their performance. These
RF-switched preamps just work always and they're weather proof so virtually
no maintenance is needed. Note that they can only handle maximum 160W RF,
which is good enough for me. http://www.advancedreceiver.com/page10.html 


-----Original Message-----
From: Bob DeVarney W1ICW [mailto:we1u at myfairpoint.net] 
Sent: Saturday, August 25, 2012 1:06 AM
To: amsat-bb at amsat.org
Subject: [amsat-bb] Re: Ts2000 with external preamps

I've had phenomenal success with the SSB preamps over the last 25 years. 
I have one for both 2 meters and 70 cm and if I had anything worth
mentioning on 6 meters for an antenna I would have one there as well.  
Prior to that I used Landwehr.

For my EME station I am using a DB6NT receive-only, only because at the time
the Deutschemark ( or Euro ) was cheap and I could get the DB6NT cheaper
shipped from Germany than I could get an equivalent SSB receive only here. I
have no regrets, the DB6NT is a thing of beauty as only German workmanship
can make.

I see that ARR is now making an rf-switched preamp that handles some power
now too, but I'd stick with the SSB if I were you, only because they will
handle up to 700 watts if you sequence them; 200 RF-sensed.

On 8/24/2012 1:28 PM, Lawn, Richard wrote:
> This link is very useful and one I didn't find when I searched. It seems
that with the particular preamp and xcvr I have a sequencer is needed to
ensure dx is removed from the coax before rf is introduced. I think the
easiest solution is to get a different preamp once I get my icom repaired. I
could also swap it with the mirage I'm using at home with the 847 which I
think is immune to rf or is switched. Unless you have an icom xcvr their
preamps are a bad purchase.
> Thanks everyone.
> Rick
> W2jaz

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