locked Single, tunable capacitor for tuning an wire antenna...
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Hello. I need to ask if there is someone willing to help me build a capacitive tuner for my EFHW antenna. I have seen some for QRP but a ham on QRZ.com gave me a guide for a 100W version. But, I do not now how to begin. I've never been to Altex, but I can go Saturday morning to get the supplies, if there's someone there who can glean a parts list from the article I was sent.
Thank you for considering. 73 de David AE4LH Here is the article link: If you are using an end-fed half-wave antenna, which is a convenient antenna for portable operation, the matching unit can be considerably simplified. https://drive.google.com/file/d/0Bw...eXc/view?resourcekey=0-vuul5TIrY-nr6HX9n5y8lg A single tunable capacitor, a transformer, and two SPDT switches to select between taps on a transformer are all that is required. You can build it yourself fairly easily.
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I put in the air-variable capacitor at least 250 pF maximum capacitance into the search bar at a local electronics store, and it came up with nothing. So, I guess I'll need to collect the shopping list from eBay. Other ideas?
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David
https://www.dxengineering.com/search/brand/mfj/department/antenna-tuners/product-line/mfj-901b-antenna-tuners/part-type/antenna-tuners?fr=part-type&SortBy=Default&SortOrder=Ascending&autoview=SKU this will do it, but if you want swr meter https://www.dxengineering.com/search/brand/mfj/department/antenna-tuners/product-line/mfj-945e-mobile-tuners/part-type/antenna-tuners?fr=part-type&SortBy=Default&SortOrder=Ascending&autoview=SKU unless you really want the experience of building yourself. you can find all the parts on ebay- or you could even find a used tuner on ebay or other ham equipment resellers. If you can wait until our tailgate (dec 4th) you could probably find a good used tuner at a fraction of the price of a new one.
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Bill,
I can wait, easily. I have a friend arriving from Florida. I’m *certain* she’ll want to go to a hamfest. She was a 1N2 in the Air Force, and specialized in copying CW.
When/where on the 4th? Advance tickets?
Thank you.
David
Sent from Mail for Windows
From: Bill Craft
David
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see attached On 11/6/2021 8:51 PM, David McGuire
wrote:
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Thank you!
Andrà tutto bene!
From: main@saradioclub.groups.io <main@saradioclub.groups.io> on behalf of Bill Craft <billc851@...>
Sent: Sunday, November 7, 2021 4:46:01 PM To: main@saradioclub.groups.io <main@saradioclub.groups.io> Subject: Re: [W5SC] Single, tunable capacitor for tuning an wire antenna... see attached On 11/6/2021 8:51 PM, David McGuire wrote:
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Joe Bruno
Has anyone responded to you yet? If you don't know I hardly ever, if ever check my email. But if need be you can text if you like. I like tons of others do not answer phone calls from uknown numbers so texting me is the way to get in touch with me... Joe Bruno 210-363-9500 W5AUQ
On Fri, Nov 5, 2021, 5:26 PM David McGuire <leviticus25_9@...> wrote: Hello. I need to ask if there is someone willing to help me build a capacitive tuner for my EFHW antenna. I have seen some for QRP but a ham on QRZ.com gave me a guide for a 100W version. But, I do not now how to begin. I've never been to Altex, but I can go Saturday morning to get the supplies, if there's someone there who can glean a parts list from the article I was sent.
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