[Milsurplus] FR-114 Digital Frequency Counter

w8au at sssnet.com w8au at sssnet.com
Thu Apr 13 16:04:15 EDT 2017


At 11:18 AM 4/13/2017, Peter Gottlieb wrote:
>I have a General Radio frequency counter which 
>uses the edge lit displays, pretty cool looking.

How about the HP 524B with all the decade step 
counters blinking at you....  those were the days.
(Not to mention the 1 cubic yard cabinet and weight)

Perry  w8au





>On Apr 13, 2017, at 11:08 AM, Bruce Gentry 
><<mailto:ka2ivy at verizon.net>ka2ivy at verizon.net> wrote:
>
>>I used these in the Air Force, they were very 
>>reliable and easy to use, but limited in 
>>frequency range, so I have not tried to find 
>>one. The Hewlett-Packard 524 is big (AND-I am 
>>interested in one-the model with Nixies!), but 
>>with the plug-ins it can go up to the VHF 
>>region. They also "wrote the book" on early 
>>frequency counter accuracy. As for another 
>>device of that era, I'm trying to find a 
>>military or lab rack mounted electric (as 
>>opposed to electronic) digital clock. Not a 
>>flip card or anything like that, but stepping 
>>relays activated by a motor driven switch to 
>>light indicators with lamps on the edges of 
>>engraved plastic plates. Like huge Nixies, the 
>>numbers dance in depth as they change. Some of 
>>these also had calendars as well.  I totally 
>>empathize with the attraction of older 
>>technologies, many of the instruments of that 
>>era exuded a vibe of confidence, optimism, and 
>>craftspersonship that has been supressed for 
>>too long and may never rebound.  Our computers 
>>and instruments today are truly awesome with 
>>what they can do, but the soul and often style 
>>of the classic gear is sadly missing. RAY- do 
>>you /did you ever have a PDP- "straight"8?  Now THAT would be way cool!
>>
>>      Bruce Gentry, KA2IVY
>>
>>On 4/13/17 10:08 AM, Peter Gottlieb wrote:
>>>Oh, come on Ray, it's not THAT large!  And the technology is very cool.
>>>
>>>
>>>Peter
>>>
>>><mailto:RAFANTINI at salisbury.edu>On Apr 13, 
>>>2017, at 9:54 AM, Ray Fantini 
>>><<mailto:RAFANTINI at salisbury.edu>RAFANTINI at salisbury.edu> wrote:
>>>
>>>>Quite often it turns out that you want 
>>>>something just because you want it, not for 
>>>>any good reason or practical purpose but just 
>>>>because you want it. For some unknown reason 
>>>>I have now decided that I want a FR-114U Digital Frequency Meter.
>>>>For those unfamiliar with this device it’s 
>>>>a first generation vacuum tube digital 
>>>>frequency counter that counts up to about 1 
>>>>MHz, it uses something called a Trochotron 
>>>>beam-switch counters controlled by a 100 KHz time base firing a 6D4 thyratron.
>>>>Think I posted something in the past about 
>>>>the HP-524 family of counters but for now 
>>>>have given up on trying to locate a 524 
>>>>thinking that the size and space requirements 
>>>>may be a bit too much for the current shop, 
>>>>keep in mind that this is being posted by 
>>>>someone who already has a couple full size 
>>>>PDP-11 systems along with a ton of other 
>>>>radios currently in the shop. Although I did 
>>>>sell off a broadcast transmitter that I had on 160 so that provided a hole.
>>>>But there it is, insanity has no limits. I 
>>>>want a first generation huge digital frequency counter.
>>>>Nothing happens in a vacuum, this weird 
>>>>desire to want a FR-114U stems from seeing one on EBay at:
>>>>
>>>><http://www.ebay.com/itm/VINTAGE-Military-Sentinel-FR-114A-U-Digital-Nixie-Tube-Frequency-Meter-TESTED-/122368130037?hash=item1c7db57bf5:g:Xc8AAOSw2gxYrgPT>http://www.ebay.com/itm/VINTAGE-Military-Sentinel-FR-114A-U-Digital-Nixie-Tube-Frequency-Meter-TESTED-/122368130037?hash=item1c7db57bf5:g:Xc8AAOSw2gxYrgPT
>>>>
>>>>Just don’t want to pay that much money plus 
>>>>shipping!
>>>>
>>>>
>>>>Ray F/KA3EKH
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