No, I do not have the 40 meter version. (Alas, no room.)
73,
Scott K9MA
----------
Scott Ellington
--- via iPad
> On Dec 22, 2019, at 9:28 PM, Jeff Blaine <KeepWalking188@ac0c.com> wrote:
>
> Are you talking about the 40m performance? A local here K3PA has a mid-tri
> and has much better F/B on the higher bands but the 40m is as you say, in the
> 10-15 range - but that's to be expected from a conventional 2-element.
>
> 73/jeff/ac0c
> alpha-charlie-zero-charlie
> www.ac0c.com
>
>
>> On 12/22/19 9:00 PM, K9MA wrote:
>> I’m not sure the trade off of f/b for forward gain was deliberate, as the
>> published model results show higher f/b. I am pretty sure my measurements
>> are good. I did them with two other stations, one about 20 miles away and
>> another 250 feet from my antenna. Both used horizontally polarized beams.
>> Results were very close, and consistent with my operating experience.
>>
>> I can’t measure gain, of course, but the pattern looked reasonable, so I’m
>> not concerned about the f/b. It even helps sometimes, as in this area your
>> beam is usually pointed the wrong way.
>>
>> 73,
>> Scott K9MA
>>
>>
>> ----------
>>
>> Scott Ellington
>>
>> --- via iPad
>>
>>>> On Dec 22, 2019, at 8:18 PM, Robert Harmon <k6uj@pacbell.net> wrote:
>>>
>>> Scott,
>>>
>>> That sounds good Scott. I remember asking Tom, N6BT, one time about the
>>> forward gain vs f/b on his Force 12 Yagis and
>>> as I understood it he tended to scrifice a little f/b to optomize the
>>> forward gain. Thats fine with me.
>>>
>>> I have a JK 402 up now and am very happy with the JK construction. I'm
>>> sure the Mid-Tri will be good also mechanically.
>>>
>>> thanks for the info
>>>
>>> Bob
>>> K6UJ
>>>
>>>
>>>
>>>
>>>> On Dec 22, 2019, at 6:07 PM, K9MA <k9ma@sdellington.us> wrote:
>>>>
>>>> I put one up last summer. It seems to work fine, though the f/b appears to
>>>> be only 12-15 dB. That’s not necessarily a bad thing.
>>>>
>>>> The SWR looks very good measured at the shack, closely matching the
>>>> published curves. Strangely, when I measured it up at the feedpoint, it
>>>> looked different, though not really bad. Feedline loss is too low to
>>>> explain that, so I don’t know what to make of it. W3JK predicted this
>>>> effect.
>>>>
>>>> I’ve not tried load it on 12 or 17.
>>>>
>>>> 73,
>>>>
>>>> Scott K9MA
>>>>
>>>> ----------
>>>>
>>>> Scott Ellington
>>>>
>>>> --- via iPad
>>>>
>>>>>> On Dec 22, 2019, at 5:15 PM, Robert Harmon <k6uj@pacbell.net> wrote:
>>>>>
>>>>> I am thinking about getting the JK Mid Tri.
>>>>> Have one ? How well does it play ?
>>>>>
>>>>> Also, have you tried to load it on 17 and 24 with a tuner ?
>>>>> The Force 12 C31XR could be loaded on 17 and 24 with a tuner, not that
>>>>> great, but it worked.
>>>>>
>>>>> Bob
>>>>> K6UJ
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>>
>>>>>
>>>>>
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