UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Looking to build RF detector probe for low frequency

Bazz4CQJ · 5th Feb 2019, 9:46 pm

Let's re-visit the thread which ran back in 2016

on the subject of RF Voltmeters https://www.vintage-radio.net/forum/...ltmeter&page=3. Inevitably, probes were a key issue in the discussion. IIRC, the objective was to come up with a design for an RF voltmeter which would operate over quite a range (1-150MHz ?) with a sensitivity of a few uV (as achieved by Marconi, Booton et al).

Quite a few published designs were found which claimed to achieve this requirement, but when a number of these were built and tested, serious disappointment was the main outcome. Of course, this is not quite the same as IsquaredR, is looking for, but beware...

If IsqaredR builds the Haigh design, I hope he let's us know what he thinks of it.

B

5th Feb 2019, 9:46 pm	#9
Bazz4CQJ Dekatron Join Date: Apr 2009 Location: Oxfordshire, UK. Posts: 4,934	Re: Looking to build RF detector probe for low frequency Let's re-visit the thread which ran back in 2016 on the subject of RF Voltmeters https://www.vintage-radio.net/forum/...ltmeter&page=3. Inevitably, probes were a key issue in the discussion. IIRC, the objective was to come up with a design for an RF voltmeter which would operate over quite a range (1-150MHz ?) with a sensitivity of a few uV (as achieved by Marconi, Booton et al). Quite a few published designs were found which claimed to achieve this requirement, but when a number of these were built and tested, serious disappointment was the main outcome. Of course, this is not quite the same as IsquaredR, is looking for, but beware... If IsqaredR builds the Haigh design, I hope he let's us know what he thinks of it. B __________________ Saturn V had 6 million pounds of fuel. It would take thirty thousand strong men to lift it an inch.