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TR4310 vs TR-7 RIT circuits
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Not sure how different the RIT circuits are for the TR4310 versus the TR-7 but they are different. ?For example, with the 4310 using RIT, when the PTO dial is moved the RIT is automatically turned off; this is not the case with the TR-7 and RV75 where the RIT stays activated until manually turned off. 73, Evan, K9SQG
On Saturday, April 12, 2025 at 01:26:24 AM EDT, Jim Shorney via groups.io <jimnu0c@...> wrote:
If the RIT circuit is the same as the TR7 that shouldn't happen. The switch is DPDT and one half fires the lamp when pushed in. The other half applies +10 to either the RIT or /RIT control signal on the PBT/REF board. That's it. The rest is simple analog voltage steering through a 4016 analog switch IC. No digital involved. OTOH if they did something different involving the synthesized VRTO then all bets are off. It may be a feature or a bug.... On Fri, 11 Apr 2025 08:42:48 -0700 "VE7PS via groups.io" <ve7ps@...> wrote: > Tilman...congrats on the TR-4310. > > Mine also has the "RIT ON at startup" issue, and I believe others do too. > I gave up trying to find why, but then I am not a digital guy at all, > Maybe Mark can set us straight on this one? > > Every few years I need to pull it out and clean all the Molex connectors, > same as the TR-7's.? So far that process has solved any other problems that > have cropped up. > > 73 > Peter > VE7PS -- 73 -Jim NU0C |
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