Bolometer power

[mixedgas]

A friend of mine lives 575 miles away, and we're tired of cell phone bills, I've been looking at DSB and SSB HF for talking to my friend, and this site popped up.

A crafty bolometer power meter for lasers and RF:

Enjoy:

http://www.vk2zay.net/article/210

Steve

[lasersbee]

Nice find...
Looks quite similar to a Project by a member "Benm" on LPF back in November of 2008...

http://www.laserpointerforums.com/fo...m=1226965719/0

Jerry

[mixedgas]

The downside is the need to inject as much power as you need to measure and long response times. The upside is it can be self calibrating with some care. I'd be weary of the low end of the range.


For someone in the middle of nowhere who needs a calibration, with no budget, its not bad if you have a few tens of mWs and built it with surface mount and a thin adsorber. But it still doesn't beat a well engineered thermal head.

Now if I can just figure out a good adsorber for 10.368 ghz, where I need one. Surplus HP rf bolometer readouts are all over the place, but the sensor heads are highly prized and go for far more then they are worth.

The LPF thread does a good job of explaining the issues.

Steve

[heroic]

Now if I can just figure out a good adsorber for 10.368 ghz, where I need one.

Have you tried ferrite or mumetal?

-J.

[mixedgas]

Have you tried ferrite or mumetal?

-J.

I want to put a detector in the end of my ham radio waveguide. So its gotta be thin, but non reflective. will see what mu does. Ferrites try to act like a circulator or a reflector.

Steve