Home made or not - Page 2 - UK Vintage Radio Repair and Restoration Discussion Forum

G6Tanuki · 6th Jan 2013, 8:12 pm

Quote:

Originally Posted by Richard

Is it just me or are there too many smoothing caps, 2 on top of the chassis, and 2 below which look like they may be insulated from the clamps so may have the cases live?Richard

I think the 2 big below-chassis 'cans' will be low-voltage electrolytics for cathode-bypass duty.

keithinuk · 6th Jan 2013, 10:35 pm

I did notice that the speaker wire's were not connected to the block when I removed the chassis, seen in one of the pictures, so its been played with.
picture and valve numbers.

Sideband · 6th Jan 2013, 11:09 pm

It's very professionally wired, even the soldering. Posts on this forum seem to suggest that the beehive trimmers are an anomaly. There are beehive trimmers fitted to my Philips 470A dated 1938 so they were around long before the 60's.

I doubt there is much wrong with it. Connect up the speaker and run it through a lamp limiter. You'll need a longwire aerial, 10 to 15 feet should do. It's a simple TRF circuit so won't take too much to get going again. Of course being a possible homebrew, there is no telling how well it performed originally.

Rich

6th Jan 2013, 10:35 pm	#22
keithinuk Retired Dormant Member Join Date: Mar 2011 Location: Hertfordshire, UK. Posts: 208	Re: Home made or not I did notice that the speaker wire's were not connected to the block when I removed the chassis, seen in one of the pictures, so its been played with. picture and valve numbers. Attached Thumbnails

6th Jan 2013, 11:09 pm	#23
Sideband Dekatron Join Date: Oct 2003 Location: Croydon, Surrey, UK. Posts: 7,571	Re: Home made or not It's very professionally wired, even the soldering. Posts on this forum seem to suggest that the beehive trimmers are an anomaly. There are beehive trimmers fitted to my Philips 470A dated 1938 so they were around long before the 60's. I doubt there is much wrong with it. Connect up the speaker and run it through a lamp limiter. You'll need a longwire aerial, 10 to 15 feet should do. It's a simple TRF circuit so won't take too much to get going again. Of course being a possible homebrew, there is no telling how well it performed originally. Rich __________________ There are lots of brilliant keyboard players and then there is Rick Wakeman.....