Can be done!
The best way is to use 3dB/90° hybrids since they tend to discourage
oscillation and improve matching. They are also quite forgiving of
imbalances in the amplifiers? input and output impedances.
Alex 4Z5KS
-----Original Message-----
From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
Behalf Of donroden@hiwaay.net
Sent: Sunday, September 06, 2009 7:40 AM
To: amps fourm
Subject: [Amps] Pair of SB-220s
Not saying anybody WOULD,,,,,,,,,,, but if you COULD.....
parallel a pair of SB-220s on a single band ?
Wilkinson Power deviders / combiners for zero phase combining?
A 90 degree network on the input and opposite 90 degree on output ?
Run them in push-pull ( 180 degrees )
Assuming all splitters/ combiners would be made from coax.
Or, just use short runs of equal length coax and a coax tee for the inputs
and accept a 2:1 drive mismatch ?
Hummmmmmm
Don WA4NPL
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