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Further to my previous message concerning counterpoise lengths, I
have found here in the UK that the Sony AN-71 compact shortwave aerial is readily available at around ?9. It consists of 7 metres of insulated black wire on a spool which is easily rewound into a small black circular case. For 20m to 6m the seven metres of wire included is sufficient for a counterpoise, for 80m to 40m I have attached a crocodile clip to the end of the wire which I attach to any nearby wire fence and it works great with the ATX walkabout antenna. This message is intended to help others. 73 de Philip G0ISW http:www.qsl.net/g0isw/ |
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Hi Philip.
I bought a 7.5m lockable steel tape measure from the local DIY store for ?6.99, which makes an excellent counterpoise. The advantage is built in calibrations, plus the steel tape seems to be less affected by positioning than wire, for some unknown reason. Julian, G4ILO --- In FT817@y..., "Philip " <G0isw@q...> wrote: Further to my previous message concerning counterpoise lengths, Iof insulated black wire on a spool which is easily rewound into asmall black circular case. For 20m to 6m the seven metres of wireincluded is sufficient for a counterpoise, for 80m to 40m I have attached a |
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Don
Julian, what effect, if any, would adding a second or third steel tape have
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on resonance? ----- Original Message -----
From: <g4ilo@...> To: <FT817@...> Sent: Tuesday, June 12, 2001 4:37 AM Subject: [FT817] Re: Compact counterpoise for FT-817 is a Sony AN-71 Hi Philip. I bought a 7.5m lockable steel tape measure from the local DIY store for 6.99, which makes an excellent counterpoise. The advantage is built in calibrations, plus the steel tape seems to be less affected by positioning than wire, for some unknown reason. Julian, G4ILO --- In FT817@y..., "Philip " <G0isw@q...> wrote: Further to my previous message concerning counterpoise lengths, Iof insulated black wire on a spool which is easily rewound into asmall black circular case. For 20m to 6m the seven metres of wireincluded is sufficient for a counterpoise, for 80m to 40m I have attached a To unsubscribe from this group, send an email to: FT817-unsubscribe@... and for a great FAQ ( Frequently Asked Questions ) see Please note that your messages and files sent to this group become public domain upon submission and may appear anywhere on the Internet or in print without notice or compensation. Your use of Yahoo! Groups is subject to |
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--- In FT817@y..., "Philip " <G0isw@q...> wrote:
Further to my previous message concerning counterpoise lengths, Iof insulated black wire on a spool which is easily rewound into asmall black circular case. For 20m to 6m the seven metres of wireincluded is sufficient for a counterpoise, for 80m to 40m I have attached aI have the AN-71 also Philip and agree with you. Compact and does the job for 20 m and up. The little clip is a big plus! 72 de Barry - W4WB |
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--- In FT817@y..., "Philip " <G0isw@q...> wrote:
I have found here in the UK that the Sony AN-71 compact shortwaveAnother alternative to try is the retractable phone cable holders. like: With some thought and "2" of these + a little plastic and connectors you could make a dipole or just use half of it for a counterpoise.. I have one of these for it's intended purpose, I think you could get 10M of thin wire on to it.. JAT David |
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Hello group,
two AN-71 make a perfect lightweight portable dipole. I use such an antenna since several years now. My best dx with such a dipole using a simple center isolator (no balun) is from Perth/VK to Cologne/DL (my QSO partner was my father, DL6PE), using 2 Watt CW (Mizuho MX-14). Looking forward to have the same fun with the FT-817 now! Best 73 Geri, DK8KW (W1KW) --- In FT817@y..., "Philip " <G0isw@q...> wrote: Further to my previous message concerning counterpoise lengths, Imetres of insulated black wire on a spool which is easily rewound into asmall black circular case. For 20m to 6m the seven metres of wireincluded is sufficient for a counterpoise, for 80m to 40m I have attached a |
Philip G0ISW