[R-390] Hammarlund HQ 180 tubes and info needed

[Al Parker]

Hi Perrier, et al,
	As Clay said, the "C" only stands for "clock", in any of the HQ-series. 
  IIRC, there is no specific manual just for "C'"s, as that was the only 
difference, BUT in some manuals there's a page detailing the clock 
wiring & installation.  I don't remember which manuals did, or did not, 
incl. that pg, I'll dig some out and see, if you want.
	As you say, a difference in the 180 & 180A, and the 170 & 170A, is the 
change to SS rectifiers.  But the"A's" also keep the filaments on for 
one osc. & a mixer stage.  My mind is full of BBOD's, but since there 
was no change in the pwr xfmr they must have incl a separate small fil. 
xfmr.  I have added that xfmr in several "non-A's" to do that, and it 
greatly shortens the time to warmup to stable.
73,
Al, W8UT
www.boatanchors.org
www.hammarlund.info

"There is nothing -- absolutely nothing -- half so much
worth doing as simply messing about in boats"
Ratty, to Mole

On 5/11/2019 7:53 PM, Perry Sandeen via R-390 wrote:
> Yo Bubba Dudes!,
> I won a bid for what was supposed to be the *C* model but when it arrived it was the original HQ 180 model. However is was clean, the price was low, so no probemo.
> 
> I do have the 180 ski which I'm in the process of digitizing. In the HQ-180 manual I D/L'd there were several other ski's as well, one being for the *A* version.
> 
>  From the *A* ski I see that the later models dropped the 5U4 for SS diodes.  My problem is that I don't know what the changes were made to create the *C* version. The only *C* ski I could find was on the BAMA site and it is in the Dijivu format.
> So my questions are:
> Could someone send me info on the differences between the 180 and the *C*?
> Could someone send me or point me to where I could D/L the *C* ski?
> 
> I have all the tubes needed for a complete replacement EXCEPT the strange (to me) 6BV8.
> I would like to trade NOS tube I have for, if possible, five 6BV8's.  I could do cash or cash-trade as well.
> Please reply off list if you could help me out.
> Regards,
> Perrier