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1. LF: Re: EF50 (score: 1): Author: "Costas Krallis" <[email protected]>; Date: Fri, 16 Mar 2001 16:01:58 +0200; Amongst the mine of nostalgia out there, I there anyone who understands valve circuit topology and can tell us if the circuit I described really can be considered as a cascode but using just a singl; /rsgb_lf_group-archives/html/rsgb_lf_group/2001-03/msg00231.html (9,036 bytes)
2. LF: Re: EF50 (score: 1): Author: "Talbot Andrew" <[email protected]>; Date: Fri, 16 Mar 2001 12:35:38 +0100; In the early 1980s the VMP4 was going to answer both our VHF power amplifier and wide dynamic range receiver problems, so I scrounged some freebies; couldn't afford to buy any, they were too expensiv; /rsgb_lf_group-archives/html/rsgb_lf_group/2001-03/msg00237.html (9,164 bytes)
3. LF: Re: EF50 (score: 1): Author: "Alberto di Bene" <[email protected]>; Date: Fri, 16 Mar 2001 11:44:00 +0100; Oh, no ! I have been in search of VMP4 for years .....without luck, and you throw them away...:-( There is no justice in this world ... :-) 73 Alberto I2PHD; /rsgb_lf_group-archives/html/rsgb_lf_group/2001-03/msg00239.html (8,325 bytes)
4. Re: LF: RE: EF50 (score: 1): Author: "Rik Strobbe" <[email protected]>; Date: Fri, 16 Mar 2001 10:31:31; Hi Andy, A pity, I threw away some old VMP4 devices only a few weeks ago in a clear out of ancient and obsolete semiconductors as part of teh shack rebuild, they would have been quite good for an act; /rsgb_lf_group-archives/html/rsgb_lf_group/2001-03/msg00241.html (9,374 bytes)
5. LF: RE: EF50 (score: 1): Author: "Talbot Andrew" <[email protected]>; Date: Fri, 16 Mar 2001 09:45:02 +0100; Could that be because the Navy used E55F (presumably = EF55). The active antenna whose description started this thread does use three of these devices. Amongst the mine of nostalgia out there, I ther; /rsgb_lf_group-archives/html/rsgb_lf_group/2001-03/msg00242.html (9,620 bytes)

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