[ARC5] BC-375: "Once more unto the breach, dear friends!"

[Ronnie Hull]

Careful with that axe Eugene!

Sent from my iPhone

> On Jul 16, 2022, at 1:24 PM, kn7sfz <kn7sfz at gmail.com> wrote:
> 
>  I've had the BC-375 roller inductor in my home brew antenna tuner for over 40+ years.  Love the looks and feel of that baby.
> 
> Would love to have had an entire unit.  Good luck and keep us in the loop!
> 
> Richard kn7sfz    You can see mine sitting next to the HQ-129x, my novice rcvr. 
> 
> https://www.qrz.com/db/KN7SFZ
> 
> 
> 
> On 7/16/2022 10:09 AM, David Stinson wrote:
>> Yes, here I go again, "tilting at the windmill" 
>> of finding a non-destructive alternative to 
>> $1400 worth of tubes, in hopes that some 
>> other irrepressible soul will lift a BC-375 
>> off the basement floor, out of the dark and 
>> endless "I'll get around to it" void, 
>> and "breath into it's wires and meters 
>> the breath of life." 
>> 
>> Found this "hanger queen-" dirty, tubeless 
>> and forlorn, saved it from the "after hamfest" 
>> scrap heap and brought it home for "parts." 
>> Most of the covers went to someone's 
>> project (don't remember which one). 
>> Electrically, it is complete, though rough. 
>> It will make a good "test bed" for 
>> experimentation without messing-about with 
>> my completed SCR-287 station. 
>> 
>> First thing to do was to get it working 
>> "original."  Lots of lubing, De-Ox-it and 
>> elbow grease and it's working, making 
>> RF out on 3890 KC. 
>> With just 400V regulated For B+, 
>> it's making 9W of carrier, 15W Peak 
>> with audio.  Now it's ready 
>> to be "fiddled and twiddled." 
>> 
>> Anyone here heard of the Svetlana SV572-160 triode? 
>> Becoming a tube of interest to the Audio cultists. 
>> They're a "572 without the plate cap" they say. 
>> Has anyone played with these at RF? 
>> If one shops-around, one can get a quad of them 
>> for a couple of hundred bucks. 
>> /https://frank.pocnet.net/sheets/164/s/SV572-160.pdf 
>> 
>> Every couple of years I seem to "get the bug" 
>> to work on this project again, even though it's 
>> unlikely even one other person will adopt it. 
>> It reminds me of lines from my favourite Kipling 
>> poem, edited for a 21st-Century reader: 
>> 
>>   "As it will be in the future, 
>>    so it was at the birth of Man. 
>> 
>>    There are only four things certain 
>>    since social progress began: 
>> 
>>    that a dog returns to his vomit, 
>>    that a pig returns to her mire, 
>> 
>>    and a burnt fool's bandaged finger 
>>    goes wobbling back to the fire..." 
>> 
>> Gonna go do some more "wobbling." 
>> 
>> GL OM ES 73 DE Dave AB5S 
>> 
>> 
>> 
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