[Heathkit] Heathkit TT-1 Tube Tester Problem

[hwhall at compuserve.com]

Thanks!  Interesting.

Wayne

-----Original Message-----
From: B Riches <bill.riches at verizon.net>
To: willisw200 <willisw200 at msn.com>; heathkit <heathkit at mailman.qth.net>; hwhall <hwhall at compuserve.com>
Sent: Sat, Feb 22, 2020 7:59 pm
Subject: Re: [Heathkit] Heathkit TT-1 Tube Tester Problem

 I tested a few nos ones and they all checked ok.
73,
Bill, WA2DVUCape May
    On Saturday, February 22, 2020, 07:35:56 PM EST, <hwhall at compuserve.com> wrote:  
 
 I was wondering did the 12BY7 test by Bill, WA2DVU, occur & did it reveal anything?

WayneWB4OGM

-----Original Message-----
From: Harry Williams <willisw200 at msn.com>
To: hwhall at compuserve.com <hwhall at compuserve.com>; bill.riches at verizon.net <bill.riches at verizon.net>; heathkit at mailman.qth.net <heathkit at mailman.qth.net>
Sent: Sat, Feb 22, 2020 6:29 am
Subject: RE: [Heathkit] Heathkit TT-1 Tube Tester Problem

#yiv7514578560 #yiv7514578560 -- _filtered {} _filtered {} #yiv7514578560 #yiv7514578560 p.yiv7514578560MsoNormal, #yiv7514578560 li.yiv7514578560MsoNormal, #yiv7514578560 div.yiv7514578560MsoNormal {margin:0in;margin-bottom:.0001pt;font-size:11.0pt;font-family:sans-serif;} #yiv7514578560 a:link, #yiv7514578560 span.yiv7514578560MsoHyperlink {color:blue;text-decoration:underline;} #yiv7514578560 span.yiv7514578560EmailStyle19 {font-family:sans-serif;color:windowtext;} #yiv7514578560 .yiv7514578560MsoChpDefault {font-family:sans-serif;} _filtered {} #yiv7514578560 div.yiv7514578560WordSection1 {} #yiv7514578560 Hi Wayne, I am still working on it. Going to extend the tester tube socket and make some measurements at the pins. For now I can get an idea of how the tube is performing by using a bias of 40L instead of 20L. That puts the readings within the meter range so I can get a relative idea between different tubes as to which are better. So far I have not found any other tube types that show this behavior where the meter pegs using the suggested test settings.    73, Harry W0LS    From: hwhall at compuserve.com <hwhall at compuserve.com> 
Sent: Friday, February 21, 2020 22:56
To: bill.riches at verizon.net; heathkit at mailman.qth.net; willisw200 at msn.com
Subject: Re: [Heathkit] Heathkit TT-1 Tube Tester Problem    How did this work out?

Wayne  WB4OGM -----Original Message-----
From: B Riches via Heathkit <heathkit at mailman.qth.net>
To: heathkit at mailman.qth.net <heathkit at mailman.qth.net>; Harry Williams <willisw200 at msn.com>
Sent: Wed, Feb 19, 2020 6:29 pm
Subject: Re: [Heathkit] Heathkit TT-1 Tube Tester Problem Hi Harry,
I will test a 12by7 on mine tomorrow.73,Bill, WA2DVU
    On Wednesday, February 19, 2020, 03:57:53 PM EST, Harry Williams <willisw200 at msn.com> wrote: 

Hi....I am having trouble testing a 12BY7 on my TT-1 tube checker. I have tried testing 5 or 6 of them and when I pull the gm test switch the meter slams the right hand peg on all the 12BY7's. Other tubes seem to test just fine. I have gone through all of the operational checks and calibration procedures and everything looks ok. So I am wondering if the settings in the tube list are correct. I have the latest supplement (1978) and I do not see any updates in the settings for that tube. So I am wondering if someone else that has a TT-1 that has tested a 12BY7 can verify that the settings for that tube are correct.

Thanks and 73's
Harry
W0LS
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