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Reviews Categories | Amplifiers: RF Power - HF & HF+6M | Alpha 77Dx Help


Reviews Summary for Alpha 77Dx
Alpha 77Dx Reviews: 13 Average rating: 4.5/5 MSRP: $4500
Description: Single 8877; QSK; 160-10 including the new bands
Product is not in production.
More info: http://www.rfconcepts.com
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KE2TR Rating: 4/5 Jul 14, 2002 08:32 Send this review to a friend
Good Amp  Time owned: more than 12 months
I owned a late model 77DX serial # over 3200 a few years back, was a good amp but here are the cons first. Not very well protected for a multi contest use amp. If your in the know of the 8877 tube and you understand an amp's operation its a great amp but if you a contest op who know how to do rate but is a dummy as far as electronics is concerned this is not the amp for your station. I have built HB 8877 amps in the past but this ones a work of art, robust contruction, very well design and a cabinet with excellent cooling, large footprint and decent power but frankly I owned a alpha 91B and that amp had it all over the 77DX. It didn't look as good but its performance was far better. This amp is a DXers amp who sits on 20 meters all the time lookin for the new one, takes to long to change bands and you must watch out for grid current at all times cause that will damage the fragile 8877 tube so its an amp for a seasoned ham not a newbie with limited experiance.
 
SM4MI Rating: 5/5 Jul 11, 2002 17:02 Send this review to a friend
5/5  Time owned: more than 12 months
Alpha 77Dx is the best tube amplifier I ever have used. Have been used during 15 years with same tube. Still running with full power output. I hope it will run for additional 15 years.
 
RobertKoernerExAE7G Rating: 5/5 May 4, 2001 19:42 Send this review to a friend
Solid performance, 15 years  Time owned: more than 12 months
Finally had a problem with mine -- had to replace the tube; haven't bothered to replace the light bulbs that have burnt out though. The original 8877 outlasted my wife by 11 years.
 
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