Re: S-40 Drifted Micas
¿ªÔÆÌåÓýOut of interest for this and other radios, do you know the history of its environment .. as in temp and humidity ?? Don VA3DRL¡ ???catching up on emails ? From: [email protected] [mailto:[email protected]] On Behalf Of KW4H via groups.io
Sent: Friday, September 23, 2022 6:45 PM To: [email protected] Subject: Re: [HallicraftersRadios] S-40 Drifted Micas ? Mike, ? It¡¯s very unusual.? A lot of these are wack-a-doodle.? Bizarre readings, all over the road.? A few, however, are just fine.? Never seen this many bad ones in any one radio. ? 73 ¨C Steve, KW4H ? From: <[email protected]> on behalf of Mike <w5cul@...> ? Wow, that is interesting.? I am going through an SX-100 and it did not even cross my mind to check the old micas.? Typically once they are placed under voltage for some time, their ever so slightly skewed value does not shift around. To replace any out of tolerance ones with new ones may mean let the new ones cook under voltage for some amount of time before aligning the radio. ? Thank you, ? Mike W5CUL? ? From: [email protected] <[email protected]> On Behalf Of KW4H via groups.io ? Seeing something in the restoring of the S-40 here that I don¡¯t see very often ¨C some VERY significantly drifted micas.? Found a few that were crazy out of spec.? I¡¯m replacing them with modern silver micas where needed, but I¡¯m curious if Hallicrafters is known for some wacky micas.? ? 73 ¨C Steve, KW4H ? ?
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don Root