[Test-Equipment] Wanted: TS-710/TSM Crystal Impedance Meter, Good or Parts

[Dino Papas]

If all you're interested in is the frequency of operation and series resistance of crystals (and don't actually want to use vintage test gear) you could build the W1FB crystal tester described in the January 1990 QST (and reprinted in the W1FB Design Notebook).  FAR Circuits has the circuit board.  I built one and it works very well....good for matching crystals in filters.

Dino KL0S

On 28Mar2010, at 12:47 PM, Brooke Clarke wrote:

> Hi Robert and John:
> 
> Since measuring crystals is one of the areas I'm interested in
> http://www.prc68.com/I/Xtal.shtml
> http://www.prc68.com/I/Xec.shtml
> http://www.prc68.com/I/Xam.html
> http://www.prc68.com/I/Xtc.shtml
> I Googled TS-710 and found:
> A modification to Test Set, Crystal Unit, Quartz TS710/TSM is described. 
> The modification is comprised of revisions in several circuit areas with 
> a resultant improvement in operation. Overdrive of low-resistance 
> crystals is minimized, crystal power is more accurately and conveniently 
> measured, and frequency/resistance calibration with any standard 
> military crystal unit is possible.
> http://oai.dtic.mil/oai/oai?verb=getRecord&metadataPrefix=html&identifier=AD0622778
> 
> TS-683/TSM	Crystal Impedance Meter, 10-140 MC		TM 11-5051
> TS-710/TSM	"	"	    "    10-1100 KC		TM  NA
> http://pages.cthome.net/fwc/XTAL.HTM
> 
> Rev C of MIL-T-12333C is also on line at ASSIST Quick Search
> http://www.prc68.com/I/Man.shtml
> 
> John:  Do you have commercial model numbers for other Crystal Impedance 
> Meters like I have on web page:
> http://www.prc68.com/I/Xtal.shtml#TE
> 
> Have Fun,
> 
> Brooke Clarke
> http://www.PRC68.com
> 
> 
> WA5CAB at cs.com wrote:
>> Group,
>> 
>> I need a working TS-710 to test low freq FT-241 crystals used in the BC-604
>> and BC-684 transmitters.  This is a rack mount unit with 5-1/4" tall panel.
>>  I have one in relatively poor condition, missing at least knobs and
>> cabinet, condition otherwise unknown.  I'm interest in acquiring anything between
>> a known to work one to a known not to work one that has the cabinet and most
>> of the front panel components.  Buy or trade.
>> 
>> Robert Downs - Houston
>> wa5cab dot com (Web Store)
>> MVPA 9480
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