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Author Topic: The 49:1 Half-Wave End-Fed Transformer Campain is ON!  (Read 968 times)

gil

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The 49:1 Half-Wave End-Fed Transformer Campain is ON!
« on: July 26, 2018, 07:09:08 AM »
Please share:

https://igg.me/at/radioprepper

Gil.

caulktel

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Re: The 49:1 Half-Wave End-Fed Transformer Campain is ON!
« Reply #1 on: July 27, 2018, 11:15:44 AM »
Gil,

I like the idea of your campaign. I have a question though, for years I have been building EFHW auto transformers using this method, http://www.zendamateur.com/download/file.php?id=4051 which is a 60:1 transformer. Yours is a 49:1, whats the difference? Mine seem to work very well, would there be a advantage to using a 49:1 over the 60:1? Just curious.

Joel
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caulktel

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Re: The 49:1 Half-Wave End-Fed Transformer Campain is ON!
« Reply #2 on: July 28, 2018, 12:43:44 PM »
Gil,

I don't know if you will be able to read this thread or not, but it's all about EFHW and 49:1 transformers and the like. Some of the people were shouting at each other, but still some good information. https://groups.io/g/BITX20/topic/end_fed_antennas_w_ubitx/23807137?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,0,23807137

Joel
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gil

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Re: The 49:1 Half-Wave End-Fed Transformer Campain is ON!
« Reply #3 on: August 04, 2018, 05:48:27 AM »
Many of these people have no idea what they're talking about. These transformers do not have high losses. A 240 size core is 90% efficient and a 140 core around 70%. For all practical applications, you'll never hear the difference. What matters is the resonant half wave wire.

Gil.

caulktel

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Re: The 49:1 Half-Wave End-Fed Transformer Campain is ON!
« Reply #4 on: August 04, 2018, 05:18:21 PM »
Gil,

I agree, most of these groups have a select few people that like to hear themselves talk and are self professed experts. I have been using EFHW wires with 64:1 and 49:1 transformers with great results for 30 plus years. I continue to use them and will keep using them. As far as I'm concerned, I can't tell any difference between using a 49:1 vs a 64:1 transformer either, they both seem to work equally, just slightly different wire lengths. We use what works, including my Mag Loop which people say is a waste of time but mine works great.

Joel
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gil

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Re: The 49:1 Half-Wave End-Fed Transformer Campain is ON!
« Reply #5 on: August 05, 2018, 03:05:17 AM »
Yep, the proof is in the pudding, not the internet :)

Gil.

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Re: The 49:1 Half-Wave End-Fed Transformer Campain is ON!
« Reply #5 on: August 05, 2018, 03:05:17 AM »