[ARC5] LM series, power supply.

[Mike Everette via ARC5]

TheTS-175 is indeed a VHF cousin of the BC-221.  If you calibrate it and make your measurement REAL fast, you "might" be in the ball park.  Best way to use it is by drilling a hole in the top of the case so you can reach the crystal trimmer using a screwdriver, with everything buttoned up, and continuously monitor the crystal standard in the 175 on a WWV receiver.




A Lampkin 105-B freq meter is way more reliable than a 175.  That might not be saying much, but it's a fact.  I speak from experience.





73




Mike

WA4DLF





      From: Robert Eleazer <releazer at earthlink.net>
 To: arc5 at mailman.qth.net 
 Sent: Monday, November 3, 2014 7:12 PM
 Subject: Re: [ARC5] LM series, power supply.
   
I bought my LM-7 at a ham swap meet in 1982.  I had just found a new mated UG-88 connector pair for 25 cents at the same seller and felt obligated to make a show of looking around before handing them a quarter. Then, under something, in the box they always put under the table, filled with stuff they really don't want to take home, I found the LM-7, marked 50 cents. I handed them 75 cents, grabbed the connector and LM and ran away, half expecting to hear sirens approaching.

I powered it up at home and it worked, too.  And received KNX radio, a half mile away.  Of course, EVERYTHING received KNX.  I think you could have gotten it on an electric toothbrush.

By the way, someone on e-bay has a TS-175C/U for sale for $29.95 Buy It Now.  I guess it is like a BC-221 but is VHF.

Wayne
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