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jimbo9
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Post subject: 85 tube  Posted: Mar Sat 13, 2010 5:10 am |
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Joined: Mar Mon 23, 2009 7:46 am
Posts: 307
Location: e.brewton alabama 36426
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anyway to sub this have a lot other 6 pins and perhaps use a couple of germaniums as the detectors/or should a 85 be easy to buy?
this is the last tube i need on a delco radio
thanks for reading
jim
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Jack Shirley
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Post subject: Posted: Mar Sat 13, 2010 5:21 am |
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Joined: Mar Fri 14, 2008 1:40 pm
Posts: 8419
Location: SE USA
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$4 new, $2 used at findatube.com
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tubenutt
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Post subject: Posted: Mar Sat 13, 2010 5:23 am |
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 3337
Location: Medford,Or USA
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You can buy an 85 for less than $10, and there's plenty of them. You could replace the internal diodes with silicons but not the triode of the 85. Just buy you a new tube.
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Steve McDonald
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Paul Dietenberger
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Post subject: Posted: Mar Sat 13, 2010 5:23 am |
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 6203
Location: Oak Creek, WI USA
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85s are cheap and easy to get. For testing you could try a 75 but it will provide too much gain in the first audio stage and you may get some squealing. Or it may work fine. If you have one, all you can do is try it.
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paul - http://personalpages.tds.net/~pdieten
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35Z5
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Post subject: Posted: Mar Sat 13, 2010 5:23 am |
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 8656
Location: Chesapeake VA
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jimbo9
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Post subject: Posted: Mar Sat 13, 2010 5:51 am |
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Joined: Mar Mon 23, 2009 7:46 am
Posts: 307
Location: e.brewton alabama 36426
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thanks all beleive i have a 75 until i can get a 85
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