Multi tap for the HF
Submitted: Friday, Feb 23, 2007 at 11:31
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Vince NSW
Now that I have the HF up & running, I am looking at trying to get a multi Tap just in case the auto tune goes fut. ( ware belts & braces).
Anyone have any idea where I can pick up a second hand one with VKS taps. Tried the trader section & VKS site & ebay without luck.
Vince
Reply By: Member -Signman - Friday, Feb 23, 2007 at 12:24
Friday, Feb 23, 2007 at 12:24
The main channel for VKS737 is #2 (8022kHz). No real need for a multi band whip. Just make up a piece of wire about 8.8 metres long (1/4 wave of 8022), bung a connector one end that you can connect to the CENTRE pin of your antenna coax. An insulator on the other end with a length of nylon cord to throw over a branch.
Even with a multitap whip- an 'emergency' wire antenna is a must. Just roll it onto a fishing line spool and keep it in your spares bin in the vehicle.
If you must have a multiptap whip- try either Terlin Antennas or the Frankston Radio Club.
AnswerID:
223523
Follow Up By: Vince NSW - Friday, Feb 23, 2007 at 12:58
Friday, Feb 23, 2007 at 12:58
Thanks Mike & sand man.
Oldtimers must have a better hold than I thought. A Di pole is the answer & I am sure that I will have the making in the garage left over from Army days.
Must start trying to think again.
Vince
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Reply By: Member -Signman - Friday, Feb 23, 2007 at 14:38
Friday, Feb 23, 2007 at 14:38
Whilst I respect Mikes comments- admitedly a dipole/ inverted V may be more effective, it can be a hassle to get the centre terminal high enough to get the best out of the setup.
A simple long wire is far easier to erect- with height (although beneficial) is not that critical. I've operated with a long wire, insulated end tied of onto a shovel handle- from the top of the CSR into
Adelaide, and from
Halls Creek to St Marys base with it tied off onto a fellow travellers roof rack !!
If you have access to a SWR meter (than can handle 100W)- good idea to trim (either) before your tripping..
AnswerID:
223551
Reply By: Bilbo - Friday, Feb 23, 2007 at 15:38
Friday, Feb 23, 2007 at 15:38
I've got about 6 multi taps sitting in the shed. Must have a look and see what tappings are on 'em. I do know they all have at least RDFS freqs on 'em,,,,,,,,,,
If you get stuck, just ask me for a price.
Bilbo
AnswerID:
223565