[Milsurplus] Video of FR-38B/U

[Ray Fantini]

Takes two people to pick up and move.  Maybe three to be safe. The steel AV cart was designed to hold old TV sets and VCRs so it works real well in moving ii in and out of the way.  The temperature gauge has a green section at 65 degrees C and from what I remember as a kid seeing one of these at the MARS station that was what most impressed me. Have it on good authority that when MARS issued these things to members in the seventies they gave two at a time along with a third for parts. That would be a lot of stuff for anyone to move or deal with.
Due to the weight and size issues this counter has been named “Countersourious” or my new name for it “Rex in Calculis” or “King of the Counters” dealing with anything this heavy and big just deserves a Latin name.

Ray F/KA3EKH


From: Jim Whartenby [mailto:antqradio at sbcglobal.net]
Sent: Wednesday, December 06, 2017 11:17 AM
To: Ray Fantini <RAFANTINI at salisbury.edu>; mrca at mailman.qth.net; Milsurplus <Milsurplus at mailman.qth.net>
Subject: Re: [Milsurplus] Video of FR-38B/U

Temperature gauge looks like what you would find at WalMart in the kitchen gadgets section.  How much help do you need to put the counter on the bench?

Nice video,
Jim

________________________________
From: Ray Fantini <RAFANTINI at salisbury.edu<mailto:RAFANTINI at salisbury.edu>>
To: "mrca at mailman.qth.net<mailto:mrca at mailman.qth.net>" <mrca at mailman.qth.net<mailto:mrca at mailman.qth.net>>; Milsurplus <Milsurplus at mailman.qth.net<mailto:Milsurplus at mailman.qth.net>>
Sent: Wednesday, December 6, 2017 9:40 AM
Subject: [Milsurplus] Video of FR-38B/U

Did a video of the FR-38B/U Digital Frequency counter yesterday and just put it up on YouTube at:

https://www.youtube.com/watch?v=3ka1wwvex5o

Just about all the issues have been resolved, got all the time base chains working. The gates working at the proper time and most of the bugs worked out. Still have some jumps up and down in frequency but attribute this to poor performance to many of the diodes that have not aged well in the dividers. Did replace a couple of the worst offenders in the gate trigger MMV but think an entire new set would be in order being noticed that after the counter has been on for several hours and gets real hot instability increases. Also have one bad neon bulb in one of the decade counters and will have to find a replacement for that. And if all that’s not enough found that the little temperature gauge for the crystal oven has died and short of finding another unit as a parts donor don’t expect to find one of them.
Been a fun project, don’t know what’s next on the list.

Ray F/KA3EKH
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