[Amps] ALPHA 89

[Robert]

I have Alpha 89 on test bench, it's an amp I've used for several years and
decided to sell.

 

On 40 meters the Alpha input SWR, using the Alpha LEDs about 1.2 to 1 

The K3 reads 2.9 to 1 

An outboard MFJ meter shows 2.5 

 

I've tried different coax jumpers, lengths, etc.

SWR improves (2.9 best) as increase Alpha to 1500 Watts output but at ten
watt "Test" output of K3, the SWR indicates on K3 near 15 to 1

 

Bands outside 40/80 are fine.   80 is more 2 to 1 input, other bands, 1.1 to
1.

 

Thoughts??

 

73 W5AJ

 

Robert

Midland, Texas