TECHNICAL

A "Slim-Jim" half-wave vertical for 4m
Published on 25 May 2011 by Andy G0BEQ
A "Slim-Jim" half-wave vertical for 4 m made from 300-ohm ribbon cable
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70 MHz kit for I0JXX's 50 MHz antenna
Published on 25 May 2011 by Marco IW0FFK
70 MHz kit for I0JXX's 50 MHz antenna by Marco IW0FFK
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70 MHz Yamag antenna
Published on 25 May 2011 by Pino IK0SMG
70 MHz Yamag antenna by Pino IK0SMG
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FT-221R modifications
Published on 25 May 2011 by Geoffrey GI0GDP
FT-221R modifications by Geoffrey GI0GDP
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160 W MOSFET PA
Published on 25 May 2011 by Geoffrey GI0GDP
160 W MOSFET PA by Geoffrey GI0GDP
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50/70 MHz dual band antenna comparison
Published on 25 May 2011 by Uffe PA5DD
50/70 MHz dual band antenna comparison by Uffe PA5DD
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MMANA analysis of the Vinecom 6N4 antenna
Published on 25 May 2011 by Marcel F5DQK
MMANA analysis of the Vinecom 6N4 antenna by Marcel F5DQK
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Active Band Pass Filter for Yaesu FT-847
Published on 25 May 2011 by Tony CT1FFU
An Active Band Pass Filter for the Yaesu FT-847 by Tony CT1FFU
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Pre-amplifier for 70 MHz
Published on 25 May 2011 by David G3PTU
A pre-amplifier for 70 MHz  by David G3PTU
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70 MHz modification of a MML144/100
Published on 19 May 2011 by Costas SV1DH
Details of MML144/100 successful modification to 4m in a very stable manner.
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