On Sun, 7 Sep 1997 11:30:09 +0000 w8jitom@postoffice.worldnet.att.net
writes:
>> From: km1h@juno.com (km1h @ juno.com)
>> Subject: Re: [AMPS] SB-220 problem
To: <amps@contesting.com>
>> Date: Sun, 7 Sep 97 01:30:54 +0000
>
>Hi Carl,
>
>> >Finally, the reason a 220 has less problems with arcing than higher
>
>> >power amps is the HV power supply in the 220 is LESS than AL-80B
>> >standards. It was a 600 watt CW output design, NOT a 1500 watt
>output
>>
>> More HorseCrap. The SB220 is a 2000W PEP input amp.
>
>The SB-220 DESIGN specs are as I indicated. Look them up.
Do your "DESIGN" specs differ from the published specs in the manual?
I'll stick with my earlier statement thank you. BTW, try pages 79 and
80 in the manual and then tell me how you come up with a 600W limit. You
must be using Rich's math.
>
>> Gee, I guess my years as Service Manager at National Radio dont
>count??
>
>I wasn't aware National Radio serviced SB-220's, and sold and
>serviced 3-500 amps. How many ground grid amps did National sell
>and service with grids floated by capacitors to people with solid
>state rigs?
National Radio actually built several GG triode amps but never went into
production. That was when the parent company got into some deep doo doo
with the Govt over some contracts.
We didnt add resistors in series with cathode leads either.
>> Tom. I have spent most of my life in the Service side of life. It
>makes
>> no difference if it is ham amps or lawnmowers
>
>I suspect they are very different, since gas is desirable in a Toro
>and undesirable in a PA tube.
>
>>Dealing with an upset customer requires patience and
>>understanding.
>
>Your example is well worth remembering.
Must be from hanging around with too many Ingerneers.
>
>>> If you ignore any problems, you
>> >simply go out of business (or sometimes in and out).
>> A simple fact as exemplified by the past and present players in the
>amp
>> business.
>
>Amen.
>
>Look at a person who keeps keeps starting and stopping a
>business every few years under different names leaving people and
>banks stuck with debt, and you'll probably find someone who puts
>today's profits over tomorrow's business.
That wouldn't be some one we both know quite well Tom? Its amazing but
his current operation has been running for 8 years so far !
>> >I doubt YOU, despite running a successful customer driven
>profitable
>> >small business, can pull up a data base and track the service
>history
>> >of two thousand new amplifiers a year, or look at the percentage of
>
>> >returns on thousands of tubes in a year.
>>
>> Of course I cant, but I and many others can track problems across
>product
>> lines that "house engineers" either refuse to admidt or are too hung
>up
>> in their own importance to get away from the water cooler to
>investigate.
>Some people can't stay away from the beer keg either.
Too much of anything will kill you. Age and kids certainly have an effect
too.
>
>> Just read DILBERT a few times to determine your own level in the
>> structure.
>
>I prefer engineering texts or experiments to education by cartoons.
So does Dr Kevorkian and the Unabomber.
Cheers....I gotta go mow the lawn.
73....Carl KM1H
>
>73, Tom W8JI
>
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>
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