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em536716 · 5th Jan 2021, 9:20 pm

Now I’ve proved my Emiscope tube appears to conduct properly and my EHT transformer is OK. I’m going to move my focus to the radio portion of the receiver and power supply.

Does anyone have any ideas on how to free up the tuning shaft? Tuning control moves freely but the outer part which has the little chain on it appears very stiff. Is this a form of grease??

Thanks all for your support so far.

Ed.

5th Jan 2021, 9:20 pm	#37
em536716 Hexode Join Date: Dec 2017 Location: South East London Posts: 301	Re: My newly found Marconi 707 Now I’ve proved my Emiscope tube appears to conduct properly and my EHT transformer is OK. I’m going to move my focus to the radio portion of the receiver and power supply. Does anyone have any ideas on how to free up the tuning shaft? Tuning control moves freely but the outer part which has the little chain on it appears very stiff. Is this a form of grease?? Thanks all for your support so far. Ed.