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Old 15th Jan 2020, 12:17 am   #21
Radio Wrangler
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Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 14,797
Default Re: Another "Pantry" Rig for the IC-allergic

One thing Dick Pascoe (one of the founders of Kanga kits) told me was that he'd sold a number of the dual directional wattmeter kits I'd designed for the G-QRP club (Sprat 61) to the BBC to setting up low power local broadcast transmitters. They can show forward and reverse power down to a watt, but that's too much for pantry transmitters unless you have a very large pantry. However, a s,all amplifier can be added between the 2-transformer hybrid bridge and the diode detectors for more sensitivity. Even better would be to use two of the Analogue Devices logarithmic detector ICs... these will give loads of sensitivity and a helpfully compressed scale.

Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done
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