[Amps] Pair of SB-220s

[Alex Eban]

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 at contesting.com [mailto:amps-bounces at contesting.com] On
Behalf Of donroden at 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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