Return-Path: Received: (qmail 2989 invoked from network); 21 Mar 2000 08:53:22 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by dimple.core.plus.net.uk with SMTP; 21 Mar 2000 08:53:22 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 12XKIn-00062t-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 21 Mar 2000 08:46:13 +0000 Received: from bob.dera.gov.uk ([192.5.29.90]) by post.thorcom.com with esmtp (Exim 3.02 #1) id 12XKIm-00062o-00 for rsgb_lf_group@blacksheep.org; Tue, 21 Mar 2000 08:46:12 +0000 Content-Transfer-Encoding: 8bit Received: by bob.dera.gov.uk; (8.8.8/1.3/10May95) id IAA16862; Tue, 21 Mar 2000 08:48:15 GMT Received: (qmail 32433 invoked from network); 21 Mar 2000 09:42:02 -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; 21 Mar 2000 09:42:02 -0000 Received: by gauntlet.mail.dera.gov.uk; id IAA26760; Tue, 21 Mar 2000 08:36:42 GMT Received: from unknown(146.80.11.40) by gauntlet.mail.dera.gov.uk via smap (3.2) id xma026663; Tue, 21 Mar 00 08:36:23 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 ; Tue, 21 Mar 2000 08:48:08 +0000 Received: by FRN-GOLD-1 with Internet Mail Service (5.0.1460.8) id ; Tue, 21 Mar 2000 08:44:31 -0000 Message-ID: <3617AC3245C2D1118A840000F805359C01752808@PDW-MERCURY-1> From: "Talbot Andrew" To: "'LF Group'" Subject: LF: HV Reed relays Date: Tue, 21 Mar 2000 08:44:29 -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: Managed to find six spare reed relays that look as if they may be suitable for LF antenna switching . The reed connection points are well separated from the coil connections by about 10mm in air with little opportunity for tracking, when covered by extra insulation they should survive. The reeds are obviously vacuum filled but beyond that I've no further info. The gap between the reeds inside is only a fraction of a mm and it's rather frightening to think of the E field in this region ! But they are rated at quite a few kVoperation, and in a vacuum I suppose there is nothing to break down One is on it's way to G3LDO and I've had two other requests so far (both from overseas - does that say something about the state of experimentation in this country ?) Also found about 20 smaller relays that have reed and coil connections brought out to mounting pins on the base with a spacing of only 5mm between contact and coil connections. This could track at high voltages so suspect these are only good to about 1kV. Andy G4JNT -- 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.