Author: Herbert Schoenbohm <herbert.schoenbohm@gmail.com>
Date: Thu, 28 Nov 2019 13:58:27 -0400
I have a C3S tribander which I seldom use except when on WARC bands. It is useable there but not as good as I think it would be modifying it for 24 and 18Mhz. I wonder if anyone has tried that? I don
On 11/28/19 9:58 AM, Herbert Schoenbohm wrote: I have a C3S tribander which I seldom use except when on WARC bands. It is useable there but not as good as I think it would be modifying it for 24 and
HerbI have done alot of experimenting with the old F12 C3 line. What you are proposing is certainly feasible. If I were going to do it I would definitely model it in EZNec first before I touched a si
Check with Ken @ JK Antennas, he may already have a file for it... Ron, WV4P _______________________________________________ _______________________________________________ TowerTalk mailing list Tow
I would be interested in what you come up with Herb for the C3S. I was thinking about the same thing. I am learning EZNEC but have a long way to go to tackle this design. It's way above my pay grade.
And remember that SWR is NOT a measure of antenna performance -- GAIN and PATTERN are what matters. 73, Jim K9YC _______________________________________________ ______________________________________
And remember that SWR is NOT a measure of antenna performance -- GAIN and PATTERN are what matters. yep, 4nec2 will let you set forward gain and/or F/R, F/B as the optimizable quantity - I suspect al
You can also optimize and put levels of importance for SWR, Gain and F/B with EZNEC if you have AutoEZ. I have played a little with AutoEZ and find it to be a great tool. There is no reason to ignore
Take a look at the design of JK Antennas XR5. It is based on the C3. He has added elements for 12 and 17. https://jkantennas.com/assets/xr5-jk.pdf <https://jkantennas.com/assets/xr5-jk.pdf> Bob K6UJ
I wasn't suggesting that, John. Rather, I was observing that gain and pattern are what make an antenna a good performer. Far too many hams think that if the SWR is low, it's a good antenna. :) Sure w
I have a C3SS and it works to a fashion on the WARC bands but you have to turn it 180 degrees from the signal, the swr is over 10:1 but I still manage to work most stations. (Also works very well on
Author: Herbert Schoenbohm <herbert.schoenbohm@gmail.com>
Date: Fri, 29 Nov 2019 04:00:30 -0400
The perfect example of your point Jim was the infamous Maxcom antenna that claimed 1:2 to 1 from 2-30 Mhz! Actually, when you hooked your rig up that was very close. Further examination of the potted
Just looked at the Navassa 5 antenna, pretty well sums up what you need, albeit with the trad bands but it is feasible with not so much weight gain. https://jkantennas.com/jk-navassa-5.html failing t
I wasn't suggesting that, John. Rather, I was observing that gain and pattern are what make an antenna a good performer. Far too many hams think that if the SWR is low, it's a good antenna. :) Sure
On 11/29/19 12:00 AM, Herbert Schoenbohm wrote: The perfect example of your point Jim was the infamous Maxcom antenna that claimed 1:2 to 1 from 2-30 Mhz! Actually, when you hooked your rig up that w
<I have a C3S tribander which I seldom use except when on WARC bands. It is <useable there but not as good as I think it would be modifying it for 24 <and 18Mhz. I wonder if anyone has tried that? I
Author: Herbert Schoenbohm <herbert.schoenbohm@gmail.com>
Date: Fri, 29 Nov 2019 15:10:59 -0400
Exactly Jim...that is what I want to do. Except I was going to make the 20-meter elements shorter for 18Mhz and the 10 meter element longer for 24 while leaving the 15 meter element the same. This wo
HerbNow that I know what your game plan is, I will try to model it for you and see how EZNec says it will perform. My copy is only NEC 2 and I have heard NEC4 does a better job but I don't have a cou
On 11/29/19 3:28 PM, Tom Hellem wrote: HerbNow that I know what your game plan is, I will try to model it for you and see how EZNec says it will perform. My copy is only NEC 2 and I have heard NEC4 d