[Hammarlund] HQ-129x - Xtal Calibrator Puzzlement

[Dan Cotsirilos K9DTC]

I had a HQ-129X one time with a factory calibrator and the switch for it was 
something the RF gain control pulled put. If it is not the RF gain control 
it is one of the other ones. Gently pull on each knob until you find the one 
that pulls out. If it is a factory cal one will have to double as the 
switch.


Dan K9DTC



----- Original Message ----- 
From: "Barry H" <barry_hauser at juno.com>
To: <kgrimm at adelphia.net>
Cc: <W4AWM at aol.com>; <hammarlund at mailman.qth.net>; <barry_hauser at juno.com>
Sent: Friday, September 30, 2005 3:31 PM
Subject: Re: [Hammarlund] HQ-129x - Xtal Calibrator Puzzlement


>
> Hi Ken, John, & gang:
>
> I pulled the chassis and there's good news, bad news and more puzzlement 
> news.
>
> The good news is that the xtal calibrator is definitely ID'ed as an
> FC-135-C -- has the orange Hammarlund label.
>
> The bad news -- the KV-3 rattles when shook -- so I join Ken in having a 
> broken glass xtal in there.  I haven't opened up the can -- that will take 
> some surgery.
>
> The puzzlement news -- still no switch and the wiring doesn't make much 
> sense to me.
>
> There are four leads -- all the same orangy-red color.  Maybe they were 
> precut to different lengths and identified by length for installation 
> purposes.  Here are the hookups as I can fathom them.
>
> 1.  Ground
> 2.  6SS7 in front of can -- looks like pin 7 -- nearest filament voltage 
> pickup source - confirmed with meter.
> 3.  Inboard pin on relay socket -- the unswitched side -- not the 
> send/rec. switched. side.  I can't fully compare with the schematics, but 
> there is a long run going to the power supply.
> 4.  10-16 mHz band antenna coil
>
> No way to switch it -- it was hooked up to B+ full time.  I thought maybe 
> the whole send/receive/relay situation was rewired, so checked with a 
> DVM -- That lead is hot with B+ regardless of the position of the send/rx 
> switch.
>
> What kind of sense does that make?  Why would anyone want a full time 100 
> kHz calibrator?
>
> Barry
>
>
> W4AWM at aol.com wrote:
>
>>Hi Barry,
>>
>>I have just been through my extensive collection of Hammarlund literature 
>>and
>>the only thing I can find is reference to any calibrator accessory is the
>>HC-100 calibrator which is recommended for installation in HQ and SP-600
>>receivers. There was a particular model, number 38657-G2 for the HQ-129X 
>>and HQ-140X.
>>It sold for $17.95. Apparent date of manufacture was 1956.
>>
>><snip>
>>
>>73,
>>
>>John,  W4AWM
>>
>>
> John, the FC-135C is quite a bit older than the HC-100.  I found one in
> an old SX-28 that I picked up in a junk shop.  The owner had installed
> it...partially....with some of the leads wrapped around pins of various
> tubes to pick up voltage and also to output the signal.
>
> Barry, he had attached an old telephone switchboard switch as an on/off
> switch.  The switch was in the darkest colored lead (green?) coming out
> of the FC-135C.  The switch appeared to ground the green lead.
>
> Unfortunately, my FC-135C had the glass tube crystal and the glass was
> broken and one of the leads to the crystal wafer had been broken off.
> If anyone has for sale one of the glass or metal tube 100kc crystals
> that fit the ft-243 size socket (such as the Bliley KV3 100kc rock), I
> would appreciate hearing from you.
>
> I can't find any literature on the FC-135C either.  If someone comes up
> with anything at all...even a hand drawn schematic, please send it along
> and I'll put it on BAMA.
>
> Does anyone know who owns the web pages at
> http://eshop1.chem.buffalo.edu/hammarlund.htm ?  It looks as though he
> plans to post some information on the FC-135C.  If we knew who he is,
> perhaps we could get him to post the info that he has.
>
> 73,
> -- 
>
> Ken K4XL
> k4xl at arrl.net
>
> *** BoatAnchor Manual Archive ***
> On the web at http://bama.sbc.edu and http://bama.edebris.com
> FTP site info: bama.sbc.edu login: anonymous p/w: youremailadr
>
> _______________________________________________
> List Administrator: Duane Fischer W8DBF
> ** For Assistance: dfischer at usol.com **
> ----
> http://mailman.qth.net/mailman/listinfo/hammarlund
>
>
> _______________________________________________
> List Administrator: Duane Fischer W8DBF
> ** For Assistance: dfischer at usol.com **
> ----
> http://mailman.qth.net/mailman/listinfo/hammarlund