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My RCA C9-4
#22

The past couple of nights I have been playing with the chassis and speaker on the bench. There was STILL a distortion at higher volumes which I had some trouble tracking down. Finally traced it to a tube socket. cleaned all the contacts, put back the tube, and the distortion is gone. I also installed a rubber grommet into the hole through which the wires to the "magic eye" tube pass. They merge together into the cable right at that hole, not below it, so were easily subject to chafing from the metal, although still in good shape. Don't need those kind of problems so I installed the grommet.

I also was not satisfied with the alignment, so used actual stations on the various bands to get it exact, and then to tune the RF and antenna stages once the oscillator was dead on at the high and low end of the bands. Man, does this set suck in the stations now, even with my short test antenna on my bench ! Nashville, Louisville, Chicago, New York all came in clearly. Best of all, clearly at even high volumes with NO DISTORTION ! Icon_e_biggrin  Shortwave is booming in on both tuning bands too, with WWV right where it should be.

So, last night I made the brackets to hold the "magic eye" tube in the cabinet. The original bracket was missing from the radio. I used sheet tin to make the two side pieces, and used a hose clamp over them to clamp the tube base. I installed the brackets today. Here are pictures...

[Image: https://64.media.tumblr.com/f123f8bccb2a...a6a9b6.jpg]

[Image: https://64.media.tumblr.com/9ee316523bc9...c6b61b.jpg]

[Image: https://64.media.tumblr.com/cc631495007f...2a81f6.jpg]

[Image: https://64.media.tumblr.com/911353c98dae...e0760d.jpg]

So, now I am waiting for the dial to arrive. It is on its way, and should arrive Monday, which was a pleasant surprise. Pretty quick for Renovated Radios. He must have had one in stock. Once I install that on the chassis, I can re-install the chassis and speaker into the cabinet, do final testing, and it will be all done !


Messages In This Thread
My RCA C9-4 - by mikethedruid - 07-29-2021, 05:16 PM
RE: My RCA C9-4 - by mikethedruid - 07-29-2021, 07:25 PM
RE: My RCA C9-4 - by mikethedruid - 07-30-2021, 09:26 PM
RE: My RCA C9-4 - by Dan Walker - 07-31-2021, 08:53 AM
RE: My RCA C9-4 - by mikethedruid - 07-31-2021, 12:18 PM
RE: My RCA C9-4 - by mikethedruid - 07-31-2021, 12:44 PM
RE: My RCA C9-4 - by mikethedruid - 08-01-2021, 01:50 PM
RE: My RCA C9-4 - by Phlogiston - 08-01-2021, 02:24 PM
RE: My RCA C9-4 - by mikethedruid - 08-01-2021, 03:04 PM
RE: My RCA C9-4 - by mikethedruid - 08-01-2021, 06:48 PM
RE: My RCA C9-4 - by PhilcoMike - 08-02-2021, 01:47 PM
RE: My RCA C9-4 - by mikethedruid - 08-03-2021, 02:40 PM
RE: My RCA C9-4 - by mikethedruid - 08-07-2021, 03:27 PM
RE: My RCA C9-4 - by mikethedruid - 08-07-2021, 04:51 PM
RE: My RCA C9-4 - by mikethedruid - 08-07-2021, 11:02 PM
RE: My RCA C9-4 - by mikethedruid - 08-08-2021, 05:05 AM
RE: My RCA C9-4 - by David - 08-08-2021, 08:38 AM
RE: My RCA C9-4 - by mikethedruid - 08-08-2021, 08:06 PM
RE: My RCA C9-4 - by Paul Philco322 - 08-09-2021, 05:38 PM
RE: My RCA C9-4 - by mikethedruid - 08-09-2021, 06:41 PM
RE: My RCA C9-4 - by mikethedruid - 08-09-2021, 08:40 PM
RE: My RCA C9-4 - by mikethedruid - 08-14-2021, 02:18 PM
RE: My RCA C9-4 - by mikethedruid - 08-14-2021, 09:08 PM
RE: My RCA C9-4 - by Paul Philco322 - 08-15-2021, 08:23 AM
RE: My RCA C9-4 - by Ron Ramirez - 08-15-2021, 11:14 AM
RE: My RCA C9-4 - by mikethedruid - 08-15-2021, 11:48 AM
RE: My RCA C9-4 - by Paul Philco322 - 08-15-2021, 12:35 PM
RE: My RCA C9-4 - by mikethedruid - 08-15-2021, 02:40 PM
RE: My RCA C9-4 - by mikethedruid - 08-16-2021, 01:47 AM



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