Re: Tuning Rod for Wacom WP-643
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I did, but then decided that discretion was the better part of valor and resisted the temptation.? I did put some lateral pressure on it and it just didn¡¯t feel right; probably because it¡¯s Invar. ? If I ever get it back in the shop again, I¡¯ll give it a try. ? Thanks ? Mike WM4B ?
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From: [email protected] <[email protected]> On Behalf Of Kevin Custer
Sent: Saturday, April 19, 2025 8:18 PM
To: [email protected]
Subject: Re: [repeater-builder] Tuning Rod for Wacom WP-643? Mike,
Have you considered straightening the rod?? I've successfully done it several times on other threaded rod duplexers.
Kevin W3KKC
On 4/19/2025 7:31 PM, Mike Besemer - WM4B via groups.io wrote: Good evening, I was recently asked to tune a Wacom WP-643 duplexer.? I was having a hard time getting the pass set on one side; I couldn¡¯t seem to manage to tighten the locknut without the tuning rod turning.? None of the other cavities gave me any unusual problems.? I finally figured out that the Invar tuning rod had been bent slightly and it was making the threads bind.? I finally managed to get it tightened to the sweet spot and all is right with the world.? But it got me wondering about replacement rods.? I know Wacom is gone, but has anyone sourced tuning rods for Wacom duplexers?? I assume the rod attaches to a plunger similar to the DB4060 (I¡¯ve never had a Wacom duplexer apart), so even if a new rod was available, the old rod would have to unscrew down through the top of the cavity rather than out the top.? That would probably be difficult given the bend in the rod, but I assume I could screw the rod up beyond the bend, cut it, and then screw it back down and out the bottom. At any rate, this is mostly an academic exercise since I did manage to get the pass set properly. Thanks for your thoughts. 73, Mike WM4B
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Mike Besemer - WM4B