I wonder what a used EF 240 would sell for??
Duane - N1BBR
On Mon, Oct 26, 2015, at 09:39 AM, Ed Sawyer wrote:
> I originally had the EF 240 at 80 ft. It performed pretty darned well
> with
> a 230 - 250khz bandwidth as advertised. Its very lightweight but its
> fragile. I beefed up some of its weak points that needed service after 3
> or
> 4 years. For the money, it was the best bang for the buck and I did
> well
> with it. I took it down after about 5 years and put it into due south
> service at 50 ft. Its now on the ground because that tower was taken
> down.
> Now that I am higher power, I use a 2 el Delta loop in the trees and that
> works adequately.
>
>
>
> I now have a M2 3 el 40M3L. Its definitely physically better built
> although
> it has one linear loading flaw mechanically that I have since upgraded on
> all elements. It has much better front to back than the 2 el Force 12
> and
> "holds a frequency better". I am happy with the upgrade.
>
>
>
> To me the ONLY reason to got to the 48ft dual driven element 40M beams is
> the bandwidth. I don't think the extra dB or so is materially better
> than
> the 40M3L but the BW is only 200khz and it rolls off SHARPLY at the
> edges.
> I have it pushed down towards CW, so I see it start rolling off around
> 7180.
> Given the concentration of SSB from 7200 and down, I am okay with the
> compromise. I can reduce power and answer anyone right up to 7290 if
> needed. I am sure its barely a rotary dipole up there.
>
>
>
> If it was me, in Brazil, already owning a 402CD, I would be tempted to
> buy a
> longer boom and adding a 3rd element and re-optimizing for a 3el. A
> brand
> new 3 el shipped from the states is going to be a BIG expense and won't
> be
> much better than a modified 402CD for an extra element.
>
>
>
> Ed N1UR
>
> _
--
Bw_dw@fastmail.net
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