09-18-2021, 11:32 PM
Next up, the old electrolytics came out. One had leaked out all it's electrolyte and there was a large crusty mess underneath.
[Image: https://live.staticflickr.com/65535/5148...b19e_c.jpg]
Here's a look at my test setup. I threw a 4K resistor in place of the speaker field coil. I have a Hammond 125D for the output transformer feeding a modern 8 ohm PM speaker. The 125D is design for PP output, but it's all I had handy. I left the primary center tap disconnected.
I also managed to get an order in to Renovated Radios for some rubber tuner mounts before he closes shop.
It's getting a little cramped on my little Ikea table but I'll manage
[Image: https://live.staticflickr.com/65535/5148...86ce_c.jpg]
I fired it up again while monitoring B+ and got a crackle out of the speaker. B+ is only about 205. I think it should be closer to 275?
A bit of signal injection testing confirmed that the audio portion is working. I get a clear tone out of the speaker and it does respond to the volume control. No reception yet though.
Not a bad start I'd say.
[Image: https://live.staticflickr.com/65535/5148...b19e_c.jpg]
Here's a look at my test setup. I threw a 4K resistor in place of the speaker field coil. I have a Hammond 125D for the output transformer feeding a modern 8 ohm PM speaker. The 125D is design for PP output, but it's all I had handy. I left the primary center tap disconnected.
I also managed to get an order in to Renovated Radios for some rubber tuner mounts before he closes shop.
It's getting a little cramped on my little Ikea table but I'll manage
[Image: https://live.staticflickr.com/65535/5148...86ce_c.jpg]
I fired it up again while monitoring B+ and got a crackle out of the speaker. B+ is only about 205. I think it should be closer to 275?
A bit of signal injection testing confirmed that the audio portion is working. I get a clear tone out of the speaker and it does respond to the volume control. No reception yet though.
Not a bad start I'd say.
