There was an italian company producing and selling an HF amplifier like
that, using that tubes.
The amplifier was derived from a CB one produced by the same company and was
a total failure.
The area of application where sweep tubes had always a big success, likewise
splatters and very distorted signals, is not the same were transmitting
tubes must be used.
73,
Mauri I4JMY
-----Messaggio Originale-----
Da: Lars Harlin <harlins@swipnet.se>
A: sm5ki <sm5ki@algonet.se>; measures <measures@vcnet.com>; AMPS
<amps@contesting.com>
Data invio: sabato 1 gennaio 2000 19.41
Oggetto: SV: [AMPS] Discussions... 3/2 Power law
>
> SM5KI:
> >No heavy and big squirrel-cage fan needed. Light weight simple
> > voltage doubler circuits instead of a heavy anode transformer. Using PL
> > 509/519s TV sweep tubes instead with filaments in series from the mains,
I
> > could get rid of the relative heavy filament transformer as well. This
could
> > give some 6 - 8 db increase from the transceivers 100 W which is enough
for
> > the purpose. It works - PA0FRI described a DAF with four PL 519s in the
> > 8/1992 issue of RSGBs RadCom page162 - he says it shows well in a
two-tone
> > test and on -the -air tests were encouraging. PL 509 = 40KG6A.
>
> Hans,
>
> I really like this idea! Let me know how it works out. One caution only,
be very careful with
> saftey! A bit nasty if the chassis is at the same potential as the 240 V
mains phase lead....huh...
>
> 73 de Lars
--
FAQ on WWW: http://www.contesting.com/ampsfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|