Chris R. Burger wrote:
>
>I've seen some Heath Robinson contraptions where the external anode
>(i.e. the radial fins and concentric shroud) have been removed. The
>cooling water then flows around the tubular body of the tube itself,
>rather than through the fins.
>
That's pretty much the idea. The N6CA article seems to have tied down
all the problems in the water circuit.
>This idea may help to facilitate liquid cooling of CX tubes. The
>kind of figures I remember are a five-fold increase in plate
>dissipation (i.e. something over a kW for a 4CX250B, yielding US
>legal limit output from a single specimen!).
Great for CW, maybe, but it doesn't add a single watt to the available
*linear* output - whoops, nearly got cross-threaded there!
73 from Ian G3SEK Editor, 'The VHF/UHF DX Book'
'In Practice' columnist for RadCom (RSGB)
www.ifwtech.demon.co.uk/g3sek
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