On Sun, 17 Aug 1997 22:37:21 GMT wrt@eskimo.com (Bill Turner) writes:
>On Sun, 17 Aug 1997 12:31:15 -0400, "Jeffrey S. Thompson"
><102463.330@compuserve.com> wrote:
>
>>I recently received a new 2m amp from rf concepts and one change
>caught =
>my
>>eye right away...the new unit does not have any line fuse. I know
>it's
>>been discussed here before but if you could refresh my memory about
>the
>>issue regarding fusing one side of the line versis both sides of the
>=
>line
>>it would be appreciated.
>>p.s. this application is for a ham shack application not an
>automotive
>>application.
>>
>>
>>
> =
> =20
>> 73's Jeff T.
>>
><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
>The "hot" side of the AC line should be fused. Since the unit doesn't
>have a fuse, I'd recommend plugging it into one of those multi-outlet
>extension cord things which has a built in circuit breaker. =20
>
>And are you SURE there is no fuse, like inside maybe? Soldered onto a
>PC board somewhere? I can't imagine a commercially made unit without
>a line fuse.
>
>73, Bill W7TI
>
This amp does not plug into the AC line. It runs from an automotive
system or a bench supply of 13.8VDC.
All of the RFC manuals I have here show a 35 Amp fuse mounted internally.
If you intend to operate that amp on SSB I suggest that you change the
very poor bias circuit over to an active type. Otherwise that amp will be
mostly distortion.
I use a RFC 2-117 and it made all the difference in the world when I
changed the bias circuit.
73....Carl KM1H
--
FAQ on WWW: http://www.contesting.com/ampfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|