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KT66 was the other valve I was
thinking about .........any of those tubes
are big £ these days
Tubes are ok, my skanti
trp5000 has 2 x 4cx250-b with
round 2KV on the plates , but those
are a fragile compared to 813 still
benefit from proper matching , but
6146 where also not to rhobust
, 807 do well but with 20
watts anode dis , not too high power
note on a posted photo , 807 should be
mounted vertically and through the chassis
with skirt round the lower valve section
on 500 I run 2 x skanti 250 watt
wide band 0.5 > 30 MHz solid
state amps into a combiner , just change the
ATU to operate on HF
73 -G.
Sent: Tuesday, December 18, 2012 5:02 PM
Subject: Re: LF: Emailing: more valves 001, more valves
002
Graham
Both valves the same power out but different H voltage,
TT21/6.3 TT22/12.6
Used in class C with high voltage, efficiency 80%,
this rivals the class D es E. Maybe valves/tubes are the way to go
especially if you have a good stock, also more rugged and less likely to be
Zapped by mismatch etc
But watch out High Voltages and not recommended for
Appliance Operators
de G3KEV
----- Original Message -----
Sent: Tuesday, December 18, 2012 4:02
PM
Subject: Re: LF: Emailing: more valves
001, more valves 002
R Mal
Well TT22 , lower power version I
think, but still well sought
after by the valve-audio gang !
Its costal MF RT ? top band ,
would make a good 160 linear , big
push to 500 I would say ?
from what I have seen , best way for 500 is
solid state , cheaper + safer
73 -G..
Sent: Tuesday, December 18, 2012 3:51 PM
Subject: Re: LF: Emailing: more valves 001, more valves
002
Graham
The valves are 4 x TT22 plus the osc es reg (B7G es B9A
type) Aluminium water proof case, sturdy well built.
Ref on front is type NS6MS, cannot see any manufacturer
name
This TX is in good condx with all Xtals. This TX
could easily be shifted to 472 Khz
PSU is external.
mal/g3kev
----- Original Message -----
Sent: Tuesday, December 18, 2012 3:23
PM
Subject: Re: LF: Emailing: more valves
001, more valves 002
Don't know Mal , but those
TT21's if mullard are worth more than
the TX !
G..
> Mal and spam filtering: ZERO
> José Ros software
supported
Sent: Tuesday, December 18, 2012 3:12 PM
Subject: LF: Emailing: more valves 001, more valves
002
Talking about valve transmitters.
Does anyone recognize this MF VALVE transmitter, One
OSC valve, one Stabilizer valve, 2 PA valves and 2 Modulator
valves
ex Ship MF transmitter CW es MCW es AM
modulation
de G3KEV
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