End fed antenna

[NightProwler]

Hi all. At the moment I have two inverted V dipoles in my garden, One for 40M and the other for 20M. They seem to work well with both having an SWR of about 1.5. Anyway I was just looking at this end fed half wave...

https://www.ebay.co.uk/itm/Half-Wave-En ... %7Ciid%3A1

Any thoughts on this? Are they really resonant on 40/30/20/17/15/12/10m with no messing about? I was thinking of mounting it under the guttering of the house then running it straight down my garden which is about 70 foot long.

Cheers...Rich

[Tigersaw]

Yes and no.
That one looks crap, its a bad copy of a commercial product from RF comms, https://rfcomms.co.uk/hf-vhf-matching-units/
The RF comms ones do work, as I can testify, though you will have to wait until they have made a commercial batch and sell the surplus to the public - check the site every couple of weeks. The prices are similar or cheaper than the eBay crap.
Secondly, you will likely need a matcher to get every band low SWR.
Thirdly, it wont outperform your V's, just compliment them.

[NightProwler]

Right then I will not be ordering that then. I did think the inside of it looked a bit cheaply made. Im just having fun messing about with dipoles at the moment but I think I will stick to what I got then. The ones I am using now both have the RF choke I made for them with the correct amount of turns around a piece of plastic drain pipe. They work well as im getting into USA and Canada with no problems.

Thanks for the advice

[DX-Digger]

He says you dont need a counterpoise, but a ground rod is desirable to earth it.

[theEarwigger]

IMHO 49:1 un-uns are lossy and bad idea.
If you want end-fed on 40/20/15/10m the end-connected windom offers much lower losses and no grounding needed.

73s, Rob