Re: HA-1 T.O. Keyer socket gnds
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Yes!? I have even wondered if soldering socket ground terminals to the chassis is enough to ensure good performance.? Solder is not the perfect conductor, and does not have the best strength or immunity to fracturing over time.? I have read several times that it is a "best practice" to wire every point directly to a common ground return on the chassis, but have never seen it done in practice, except maybe in some Collins equipment. John
On Saturday, May 3, 2025 at 10:40:58 AM CDT, Jim Whartenby via groups.io <old_radio@...> wrote:
Chassis grounds that use rivets is an ongoing problem.? Whenever there is a weird problem, like an alignment issue, I routinely solder the tube socket ground terminals and other ground tie points to the chassis as a first effort to resolve the problem.? This saves a lot of troubleshooting time and is good excuse to keep that old American Beauty 100 watt soldering iron in the toolbox. Jim Logic: Method used to arrive at the wrong conclusion, with confidence.? Murphy
On Friday, May 2, 2025 at 04:51:11 PM CDT, waltcates via groups.io <cateswa@...> wrote:
I have seen center post to ground as high as 150 ohms. It only takes 3 to 5 ohms to start causing problems with speed and weight. It has the biggest effect on the timing capacitors.
Walt Cates, WD0GOF
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A majority of acceptance is not proof of correctness.
From: [email protected] <[email protected]> on behalf of Floyd - K8AC via groups.io <floydsense@...>
Sent: Friday, May 2, 2025 2:41 PM To: [email protected] <[email protected]> Subject: Re: [HallicraftersRadios] HA-1 T.O. Keyer ?
Very good, Walt.? Glad to see you point out the problem with the tube socket grounds.? Years ago my HA-1 became erratic - code elements missing or the wrong length.? It took me many days before I discovered a faulty ground at a tube socket - it looked
perfect but must have had a high resistance.??
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73, Floyd - K8AC
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haywireman