12-17-2016, 10:00 PM
Well...
after my last post, I got on a roll...and just kept working, without stopping to take pictures, until I was at a point where I could try it out.
[Image: http://www.philcoradio.com/images/phorum/37640_081.jpg]
It's Alive!
It was lots of fun getting to this point. NOT. After reinstalling the tuning shaft, I attempted to reinstall the RF unit into the main chassis. Then I could not get the band switch shaft to go completely back into the RF unit. I ended up removing the RF unit again, installing the band switch shaft, installing the RF unit, attaching its lone bolt, and then soldering its 12 leads (almost all of which I had made too long, and had to cut and restrip) to their respective points inside the main chassis.
I damaged one wire in the main chassis while reinstalling the RF unit, and had to replace it.
I had to connect a new wire from under the chassis to the 6Q7G grid cap.
I also had to find a set of tubes for it. The 6A8G and the two 6F6G tubes that came with it were OK, so they went back in. Most of the other sockets had small metal and ST tubes. I left those out, and populated the other sockets with ST (taper-top) tubes save for the rectifier socket. Here, I used a 5Y4GA instead of a taper-top 5Y4G. Why? Simple - since this chassis is going to be in a small, short cabinet, a 5Y4G would be very close to the underside of the top of the cabinet. Not a good thing as far as heat is concerned. The 5Y4GA is shorter and will allow for some clearance between cabinet top and the top of the rectifier tube.
Yes, I know, I could install some silicon diodes in an octal socket, but I would rather use a tube in this application.
I have not yet reinstalled the volume control shaft as you can see above. I left it out just in case I needed to remove the RF unit again for some reason.
I have not tried it on the two shortwave bands yet, but it seems to be fine on the lower end of AM, anyway. I'll give it a more comprehensive test tomorrow. Once I am sure it is OK, I will reinstall the volume control shaft, install all of the dial parts, and give it a good alignment.
Christmas is next weekend, so I am going to consider this my annual Christmas radio restoration.
after my last post, I got on a roll...and just kept working, without stopping to take pictures, until I was at a point where I could try it out.
[Image: http://www.philcoradio.com/images/phorum/37640_081.jpg]
It's Alive!
It was lots of fun getting to this point. NOT. After reinstalling the tuning shaft, I attempted to reinstall the RF unit into the main chassis. Then I could not get the band switch shaft to go completely back into the RF unit. I ended up removing the RF unit again, installing the band switch shaft, installing the RF unit, attaching its lone bolt, and then soldering its 12 leads (almost all of which I had made too long, and had to cut and restrip) to their respective points inside the main chassis.
I damaged one wire in the main chassis while reinstalling the RF unit, and had to replace it.
I had to connect a new wire from under the chassis to the 6Q7G grid cap.
I also had to find a set of tubes for it. The 6A8G and the two 6F6G tubes that came with it were OK, so they went back in. Most of the other sockets had small metal and ST tubes. I left those out, and populated the other sockets with ST (taper-top) tubes save for the rectifier socket. Here, I used a 5Y4GA instead of a taper-top 5Y4G. Why? Simple - since this chassis is going to be in a small, short cabinet, a 5Y4G would be very close to the underside of the top of the cabinet. Not a good thing as far as heat is concerned. The 5Y4GA is shorter and will allow for some clearance between cabinet top and the top of the rectifier tube.
Yes, I know, I could install some silicon diodes in an octal socket, but I would rather use a tube in this application.
I have not yet reinstalled the volume control shaft as you can see above. I left it out just in case I needed to remove the RF unit again for some reason.
I have not tried it on the two shortwave bands yet, but it seems to be fine on the lower end of AM, anyway. I'll give it a more comprehensive test tomorrow. Once I am sure it is OK, I will reinstall the volume control shaft, install all of the dial parts, and give it a good alignment.
Christmas is next weekend, so I am going to consider this my annual Christmas radio restoration.
--
Ron Ramirez
Ferdinand IN
