[Amps] Mod xmfr

Joe Isabella n3ji at yahoo.com
Mon Oct 11 21:44:43 EDT 2004


Thanks for the info...  The Valiant should do about 150W AM carrier -- it had three 6146s for a
final modulated by a pair of 6146s, after all.  The Ranger is only good for 50-60WAM carrier,
though -- it only had one 6146 for a final...

Joe, N3JI

--- Steve Katz <stevek at jmr.com> wrote:

> You couldn't.  The driver was for CW.  But the T-bolt had both tuned and
> passive inputs, switchable on the input selector switch, which if I recall
> correctly was in the lower left corner of the front panel.  In "passive,"
> the input tuned circuit was bypassed and replaced by a bunch of swamping
> resistors, making it hard to drive and allowing for the plate-modulated
> Valiant to work with it.  The "275 Watt" power of the Valiant was baloney,
> anyway...it was 275W DC input, on CW.  On AM, it ran about 45W of carrier
> power and about 180W PEP output with 100% modulation, if you could get it up
> to 100% modulation.  I remember (it's been a l-o-n-g time!) the Valiant had
> a way to use its PA stage for SSB also, if you had an outboard SSB exciter.
> Guess that changed biasing from Class C to Class AB1 or something, but I
> never used that feature since I didn't have any accessory SSB exciter.
> Probably people used that with the old CE 10B or something...  -WB2WIK/6
> 
> "Nobody needs more than 640k!" -Bill Gates, 1982
> 
> > -----Original Message-----
> > From:	Joe Isabella [SMTP:n3ji at yahoo.com]
> > Sent:	Monday, October 11, 2004 4:22 PM
> > To:	Amps
> > Subject:	[BULK] - RE: [BULK] - RE: [BULK] - Re: [Amps] Mod xmfr
> > 
> > Interesting -- learn something new every day.  I didn't know you could do
> > that!!  How did you
> > plate modulate the driver stage??
> > 
> > Joe
> > --- Steve Katz <stevek at jmr.com> wrote:
> > 
> > > The Valiant had a low-power output option, using just the driver stage
> > to
> > > drive the T-bolt, since the T-bolt was actually made for use with the
> > Ranger
> > > and Valiant.  The 20W or so from the driver was enough to run the T-bolt
> > at
> > > about 1 kW DC input, which was legal limit back in those days, and about
> > all
> > > the power the T-bolt could run, anyway!  For all its heft, it really
> > wasn't
> > > that powerful...only the person carrying it around had to be :)
> > > 
> > > 73,
> > > 
> > > Steve WB2WIK/6
> > > 
> > > "Nobody needs more than 640k!" -Bill Gates, 1982
> > > 
> > > > -----Original Message-----
> > > > From:	Joe Isabella [SMTP:n3ji at yahoo.com]
> > > > Sent:	Monday, October 11, 2004 3:05 PM
> > > > To:	Amps
> > > > Subject:	[BULK] - RE: [BULK] - Re: [Amps] Mod xmfr
> > > > 
> > > > Wow!!  You must've had to swamp the heck out of the Valiant to drive
> > the
> > > > T-bolt!!  Even a Ranger
> > > > needs swampped.  It is kind of funny though: my SS rig AND power
> > supply
> > > > weighs less than 20 lbs. 
> > > > Then I drive a 200 lb. amp with it...
> > > > 
> > > > Joe, N3JI
> > > > 
> > > > --- Steve Katz <stevek at jmr.com> wrote:
> > > > 
> > > > > 
> > > > > 
> > > > > > I know, I know...  I've got a VikingII/HQ-170 paired up.  There is
> > > > > > something that equals more than
> > > > > > the sum of the parts while operating the vintage gear.
> > > > > > 
> > > > > > //Like maybe when I had a Valiant, Thunderbolt and SX-101A.  This
> > > > little
> > > > > > setup weighed 430 lbs total, over three chassis.  Great fun when
> > > > moving
> > > > > > the stuff around a lot.  Like Wonder Bread, it helped build strong
> > > > bodies
> > > > > > 8 ways. -WB2WIK/6
> > > > > > 
> > > > > > Joe, N3JI
> > > > > > 
> > > > > > 
> > > > > _______________________________________________
> > > > > Amps mailing list
> > > > > Amps at contesting.com
> > > > > http://lists.contesting.com/mailman/listinfo/amps
> > > > > 
> > > > 
> > > > 
> > > > 
> > > > 		
> > > > _______________________________
> > > > Do you Yahoo!?
> > > > Declare Yourself - Register online to vote today!
> > > > http://vote.yahoo.com
> > > > _______________________________________________
> > > > Amps mailing list
> > > > Amps at contesting.com
> > > > http://lists.contesting.com/mailman/listinfo/amps
> > > 
> > 
> > 
> > 
> > 		
> > _______________________________
> > Do you Yahoo!?
> > Declare Yourself - Register online to vote today!
> > http://vote.yahoo.com
> > _______________________________________________
> > Amps mailing list
> > Amps at contesting.com
> > http://lists.contesting.com/mailman/listinfo/amps
> 



	
		
__________________________________
Do you Yahoo!?
Yahoo! Mail - You care about security. So do we.
http://promotions.yahoo.com/new_mail


More information about the Amps mailing list