Return-Path: Received: (qmail 9874 invoked from network); 20 Mar 2000 10:29:05 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by grants.core.plus.net.uk with SMTP; 20 Mar 2000 10:29:05 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 12WzKp-0002e5-00 for rsgb_lf_group-outgoing@blacksheep.org; Mon, 20 Mar 2000 10:22:55 +0000 Received: from bob.dera.gov.uk ([192.5.29.90]) by post.thorcom.com with esmtp (Exim 3.02 #1) id 12WzKo-0002dN-00 for rsgb_lf_group@blacksheep.org; Mon, 20 Mar 2000 10:22:54 +0000 Content-Transfer-Encoding: 8bit Received: by bob.dera.gov.uk; (8.8.8/1.3/10May95) id KAA24957; Mon, 20 Mar 2000 10:24:52 GMT Received: (qmail 28735 invoked from network); 20 Mar 2000 11:18:43 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: from gauntlet.mail.dera.gov.uk (172.16.9.10) by baton.dera.gov.uk with SMTP; 20 Mar 2000 11:18:43 -0000 Received: by gauntlet.mail.dera.gov.uk; id KAA28577; Mon, 20 Mar 2000 10:13:27 GMT Received: from unknown(146.80.11.40) by gauntlet.mail.dera.gov.uk via smap (3.2) id xma027948; Mon, 20 Mar 00 10:10:55 GMT X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from frn-gold-1.dera.gov.uk (unverified) by mailguard.dera.gov.uk (Content Technologies SMTPRS 2.0.15) with ESMTP id for ; Mon, 20 Mar 2000 10:17:26 +0000 Received: by FRN-GOLD-1 with Internet Mail Service (5.0.1460.8) id ; Mon, 20 Mar 2000 10:07:12 -0000 Message-ID: <3617AC3245C2D1118A840000F805359C01752805@PDW-MERCURY-1> From: "Talbot Andrew" To: rsgb_lf_group@blacksheep.org Subject: LF: High voltage reed relays Date: Mon, 20 Mar 2000 10:07:10 -0000 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.0.1460.8) Content-Type: text/plain; charset=iso-8859-1; format=flowed Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: I have a number of, quote, "High Voltage" reed relays. They were made by FR Electronics (as was) and I seem to recall are specified to something like 10kV and 1 Amp which means they may well work higher if not hot switched. They were originally intended for use in automatic ATUs intended for frequency hopping radios. They're hopefully still buried in a box in my storage shed, but I'll look them out and can pass on to anyone wanting to experiement with loading coil switching. Coil voltage is 24 V but with everyone using MOSFET PAs these dyas I'm sure that won't be a problem. Andy G4JNT > The other factor is that my station is not optimized on receive on > 136k when working crossband because the antenna is tuned to 72kHz. > What I need is a relay that will short out the 72k section of the > loading coil on receive, so the contacts have to stand many thousands > of > volts! When this problem is sorted out I am going to try a cross band > -- The Information contained in this E-Mail and any subsequent correspondence is private and is intended solely for the intended recipient(s). For those other than the recipient any disclosure, copying, distribution, or any action taken or omitted to be taken in reliance on such information is prohibited and may be unlawful.