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 32V STC 236 update
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 Return to top of page · Post #: 1 · Written at 12:09:47 AM on 20 April 2020.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 5254

Now that STC 236 That has been annoying me by being here: The coils were open on SW & BC between 1st RF & Mixer / Osc. Interesting as to why both should be that way? It did come with a mains plug fitted?

I have had adds running in Radio Waves: No result yet. However, I did get a bit of ferrite wound a few turns on it & dumped it down the tube of the SW coil (PIB to get out: Like hours,) that because, we cannot run 1st RF without plate volts, if switched to SW (did not want to disconnect SW). We have SW. BC coil with much awkward dismantling I could get out.

Sitting on fingers (the ten I have left) can be of advantage: I studied it & came to the conclusion (after a chat with another club member) that the break may be external. So 1KV was applied to both ends of the open coil and lo and behold an arc. So with magnifier, scalpel I discovered two adjacent broken wires. So that meant that two tails had to be matched to the primary terminals.

OK that was easy. But the ownership of the ends of the remaining chunk of coil were not that clear. So it was Oscilloscope & Function generator with a needle pulse to phase that one, then splice it. Soldering hair thin wire is entertaining, however, what price success. I will replace the 6J8 with the proper 6K8 & calibrate (IF is already done)


 
 Return to top of page · Post #: 2 · Written at 7:09:27 PM on 20 April 2020.
BurntOutElectronics's Gravatar
 Location: Melbourne, VIC
 Member since 2 October 2019
 Member #: 2392
 Postcount: 269

Ah a “Stuff The Customer” radio!
Wow sounds like a lot of work! Hopefully you’ll get it sorted soon


 
 Return to top of page · Post #: 3 · Written at 7:51:59 PM on 20 April 2020.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6687

Soldering hair thin wire is entertaining

Not the sort of entertainment that I actively seek. I wonder how (fresh) solder paste would go with that?


 
 Return to top of page · Post #: 4 · Written at 8:49:26 PM on 20 April 2020.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 5254

After the trip to town for the "bad hair day" (That's how I record haircuts it in MYOB), groceries, Bunnings & the hobby shop, for bits to fix radio's. ABN This is a business & radio's are only part of it. I put the 6K8 back & it started to talk in Arabic?

However, it maintained tracking on the dial, so attention was diverted to the cabinet (wood) which had a couple of loose bits where the glue had failed. I found a speaker to replace the cactus oval one that should not have been in it and damage had been done putting it in it. In anticipation of getting it going, it had been refitted months ago and was known to work up to the mixer and IF was aligned then.

The inside, as I do with wooden cabinets has been coated with Linseed Oil which discourages the wildlife, and actually is beneficial to the wood. It does add lustre to the outside of the cabinet as well. So after that it gets put back together and a way found to send it home.

It is apparently destined for a 32V home lighting display. It has been re-cabled so it does not get plugged into the mains and as it has a polarised electrolytic on the supply, a diode was added to save its life.

I can post a photo of the "orrid little coil". However I did manage to get enough wire to be able to scrape & tin the ends. These were then hooked over a splicing wire & soldered. Noting that this coil runs plate voltage: Insulation had to be placed between the coil & splice and the two splices (with tweezers). Once that was sorted & the phasing was right, it was drowned in Mar*. That will not only hold it together, but seal the splices from atmosphere.

*Mar: = "Elantis" Electrical Insulation .. Elmotherm VA42 Spray

It must be appreciated, that when you have fixed a lot of radios, invariably one, to two in fifty will be a dog.


 
 Return to top of page · Post #: 5 · Written at 9:09:26 PM on 20 April 2020.
Vintage Pete's avatar
 Location: Albury, NSW
 Member since 1 May 2016
 Member #: 1919
 Postcount: 2048

I'm Amazed they allow Hair Cuts , I know that in New Zealand hair cuts are banned ... It makes no sense to me what's allowed and what's not .
It seems to me a good way for the virus to jump or spread . Some of worst mistakes in life were hair cuts so I don't mind waiting anyway .

Pete


 
 Return to top of page · Post #: 6 · Written at 9:13:35 PM on 20 April 2020.
Brad's avatar
 Administrator
 Location: Naremburn, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 7301

ABN This is a business & radio's are only part of it. I put the 6K8 back & it started to talk in Arabic?

Let's hope the BAS is in Engrish.

This reminds me of something I used to say at my last job, where an AWA 500M Radiolette was a daily listen in my office. People that used to come to the office to sign in before undertaking various chores around the place would gaze in awe at a real dinky di Aussie-made old radio but also wonder at the music coming out of it. (It was usually Bob Rogers' 9AM programme on 2CH). My simple reply always was: old radios play old music. Whoa


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 7 · Written at 9:16:25 PM on 20 April 2020.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 5254

One of the biggest issues I see is the ones like those in NSW Health & the boat & I would say it is endemic across the nation. How do people who have a proven track record of not understanding one facet of bio security, get jobs, or remain in jobs far and above their incompetence level. Who is hiring these peanuts?

Marc


 
 Return to top of page · Post #: 8 · Written at 9:19:15 PM on 20 April 2020.
Brad's avatar
 Administrator
 Location: Naremburn, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 7301

No matter where one lives, you can become a senior public servant on the sole condition that you know how to delegate duties to others that involve reams of useless paperwork. Buildings full of clerks sending memos to each other all day seems to be the order of the day. You don't need to be an expert at anything.

Pete: I've been cutting my own hair for around 20 years and will never go back to a barber. I don't even miss the free lolly at the end for being a good lad and sitting still.


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 9 · Written at 9:48:57 PM on 20 April 2020.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6687

When I was a kid, the barber put all combs, scissors, knives, etc, in a jar of disinfectant between customers. Later, barbers put them in UV sterilisers that looked like small microwave ovens. At some point they stopped doing any of that.

remain in jobs far and above their incompetence level

It's a well known phenomenon: https://en.wikipedia.org/wiki/Peter_principle


 
 Return to top of page · Post #: 10 · Written at 10:36:57 PM on 20 April 2020.
Vintage Pete's avatar
 Location: Albury, NSW
 Member since 1 May 2016
 Member #: 1919
 Postcount: 2048

Brad , hahah I have incredibly thick hair ..I dont think I could cut it myself ., Its so thick that hairdressers always say its unfair a man has it !
When I was a boy and I lived in an isolated place where there no shops and I needed batteries for my Radio . I knew that heating them would re charged them so being about 10 or 11 with no brain yet. I popped them in the Gas oven ,but I couldn't lite it , So with the oven full of Gas I leant forward into the oven and lit a match , BOOM I lost all my hair and eyebrows. ! I will never forget the smell of burnt hair .

pete


 
 Return to top of page · Post #: 11 · Written at 11:43:42 AM on 21 April 2020.
Jimb's Gravatar
 Location: Kanahooka, NSW
 Member since 18 November 2016
 Member #: 2012
 Postcount: 712

I agree with vintage Pete.
Those that visited Sweeney Tod's barber shop did not fair well. I believe the meat pies were to die for though.


 
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