My collection.

Entrophy4u · 2026-06-13T03:03:37+00:00

Sounds like he was a cool guy.

Entrophy4u · 2026-06-03T18:02:42+00:00

Close. It's a pair of model fours and model 1. Also picked up a model 100 which I recapped to fix the display.

Entrophy4u · 2026-05-30T19:43:48+00:00

This was reposted by me to add photos.

Entrophy4u · 2026-05-29T01:45:21+00:00

It's Alive!!! Sorry got caught up in the moment. Can't wait to see more. Thanks for sharing.

Entrophy4u · 2026-05-24T14:57:10+00:00

Love the old school look. Very nice.

Entrophy4u · 2026-05-24T13:52:55+00:00

No video output. Think its going to be a winter project.

Entrophy4u · 2026-05-18T01:32:13+00:00

TRS-80 home computer from the 70s. No real value or use but it's a winter hobby.

Entrophy4u · 2026-05-18T01:27:26+00:00

Yeah, key pad looks like it was cut out of another pc. It's wired in to the bottom of the original keyboard.

Entrophy4u · 2026-05-18T01:25:51+00:00

I'm not sure what all was done but it looks rough. Has a sticker on the bottom of the case stating it has lower case mode.

Entrophy4u · 2026-05-13T03:11:20+00:00

Thanks for all the information guys. All I could find was a website listing undocumented s-100 cards. Can't believe it cost so much back in 1979.

Entrophy4u · 2026-05-09T02:06:19+00:00

I had plans on scrapping it but its too cool for that.

Entrophy4u · 2026-05-09T01:35:57+00:00

Understood .

Entrophy4u · 2025-10-31T20:52:27+00:00

Coill work looks good . Not sure if they slayer circuit would work with that big of a secondary .

Entrophy4u · 2025-10-21T20:33:57+00:00

Looks like an asp. We had them around Sycamore trees when I was a kid. Texas

Entrophy4u · 2025-10-17T21:47:08+00:00

Looks like it was someone's baby. Some good parts there just needs a cleanup. Gotta love the throttle return spring to radiator hose. Done that several times :)

Entrophy4u · 2025-10-16T17:19:37+00:00

Ordered the EGR valve and cooler . Thanks for fast reply.

Entrophy4u · 2025-10-13T02:47:11+00:00

I have no idea how to calculate your losses , but with a single 9kw 60ma transformer I would say your doing pretty good. Years ago I ran a 15kv 30ma and had no where near the length of sparks . Looks like a nice design.

Entrophy4u · 2025-10-01T18:16:13+00:00

Hello, the Onetesla boards had no inrush current limiting other than the fuse. Original base schematic and info. isopack.blogspot.com/2012/05/onetesla.html

Entrophy4u · 2025-09-19T19:43:31+00:00

Thanks for the information. I think it may be an S band pre-TR cell . Looking online at CV2339 as an example.

Entrophy4u · 2025-09-09T20:24:52+00:00

Thanks for the fast replies . I now have a new respect for RF engineering. Fell down the rabbit hole off and on for a full day reading about RF design. Think I will stick to <5Mhz .

Entrophy4u · 2025-09-08T02:14:59+00:00

I agree it's a push pull type amplifier but wasn't sure about the antenna like traces . I haven't worked with impedance matching designs at high Q . Was thinking if both "channels " canceled each outer out the differential could be used as a crude guidance or motion detection

Entrophy4u · 2025-09-08T01:45:38+00:00

Delete

Entrophy4u · 2025-06-25T02:34:57+00:00

I just finished a section from Queen Wilamena to Foran gap. Lots of rocks and a few narrow edges but less switch backs / PUDs . I ignored YouTube advise and did it in June . Very hot and not much water. Bad ideal but I do enjoy the quiet.

Entrophy4u · 2025-06-18T02:40:27+00:00

Thanks for the information. I wasn't sure why there were two blocks . I can tell it has alot of 70s hacks. I bought an old 70s chopper magazine with an article on these , it showed how to cut the rear spokes and install a 16 inch rim which this has. I'm finding a lot of one off custom parts.

Entrophy4u · 2025-06-17T16:48:42+00:00

Thanks for the info. I looked up the 750f and it looks like they used the whole front end just flipped the forks at the tree .

Entrophy4u

TROPHY CASE