An update on the old HP 3800A Distance Meter. I found a service manual online which shows there is a fuse mounted on the internal circuit board in add...

Hello all. I got a replacement battery in my HP3801 Power Unit and it seems to be putting out power. thru the cable. I hooked the power unit up to the...

@mike-marks I believe the 3800A readout only goes to 9999.99 feet and the 3800B readout is to 2999.99 meters (or something like that!). How did you me...

@rkinnie Mine came with 2 of those mirrored caps. The batteries in the 3801A Power a unit are dead (big surprise after 5-0 years) so the next project ...

RocketHurricane, post: 425359, member: 9678 wrote: I've got a high res copy. I'll see if I can find it.I've had this file printed at Costco on 20"x30"...

StLSurveyor, post: 425133, member: 7070 wrote: Very nice, do you have that in a high resolution image? That's a cool platI've got a high res copy. I'l...

I'm late to this thread, but was wondering how many Bilby towers are still standing and where are they? Anybody have locations? I spotted one at Kenne...