In response to several AX1 questions at Pacificon

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In response to several AX1 questions at Pacificon

wayne burdick
Administrator
Q: What length of coax should I use with the AXT1 tripod adapter?

A: If the whip is close to resonance, which will usually be the case on 20 meters, coax losses should be fairly small even with longer runs, say up to 15 feet. When using the AX1 on 17 and 15 meters where an ATU is required, use 3 feet or less to avoid significant feed point loss. A tripod can be set up very close to the operating position at low power levels, so this requirement can be easily met.

* * *

Q: Is the AX1 being used by SOTA operators?

A: Yes. But that the AX1 is primarily intended for pedestrian mobile, rapid deployment, and as a backup to full size antennas. A longer/higher antenna should be used if supports are available and time permits. I always bring wire to toss into a tree, but my emphasis is on quickly moving from one spot to the next -- literally walking while operating at times -- making the AX1 indispensable.

* * *

Q: Should I call CQ using the AX1 at QRP power levels?

A: If stations are looking for you, as in SOTA operation, sure. But generally at QRP levels with any kind of portable antenna it's more productive to call other stations, with emphasis on trying strong stations first. Strong stations are usually correlated with good propagation, and/or great antennas at their end, which benefits both ends of the QSO.

* * *

73,
Wayne
N6KR

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Re: In response to several AX1 questions at Pacificon

Jim Brown-10
Another question I was asked was if a choke should be used on this
antenna and where it should be placed. My response was no.

73, Jim K9YC

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Re: In response to several AX1 questions at Pacificon

Elecraft mailing list
Another question -- if a right-sized capacity had were added to the top of the whip, could this antenna be somewhat effective on 30 or 40 meters.

> On Oct 22, 2018, at 10:29 AM, Jim Brown <[hidden email]> wrote:
>
> Another question I was asked was if a choke should be used on this antenna and where it should be placed. My response was no.
>
> 73, Jim K9YC
>
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Re: In response to several AX1 questions at Pacificon

Elecraft mailing list
Correction:  "capacity hat" replaces "capacity had"....


> On Oct 22, 2018, at 10:44 AM, Phil Hystad via Elecraft <[hidden email]> wrote:
>
> Another question -- if a right-sized capacity had were added to the top of the whip, could this antenna be somewhat effective on 30 or 40 meters.
>
>> On Oct 22, 2018, at 10:29 AM, Jim Brown <[hidden email]> wrote:
>>
>> Another question I was asked was if a choke should be used on this antenna and where it should be placed. My response was no.
>>
>> 73, Jim K9YC
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>
> ______________________________________________________________
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Re: In response to several AX1 questions at Pacificon

John Harper
In reply to this post by wayne burdick
And with the right size loading coil could it be used on 630 and 2200
meters pedestrian mobile? What size wheelbarrow would be recommended for
the coil?

John AE5X
https://ae5x.blogspot.com
_________________________

Another question -- if a right-sized capacity hat were added to the
top of the whip, could this antenna be somewhat effective on 30 or 40
meters.

>* On Oct 22, 2018, at 10:29 AM, Jim Brown <jim at audiosystemsgroup.com <http://mailman.qth.net/mailman/listinfo/elecraft>> wrote:
*> >* Another question I was asked was if a choke should be used on
this antenna and where it should be placed. My response was no.
*> >* 73, Jim K9YC*
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Re: In response to several AX1 questions at Pacificon

Mike Morrow-3
In reply to this post by wayne burdick
One would need to be mindful of the 630m 5 watt and 2200m 1 watt EIRP limits in North America, when using such a modified AX1.

Mike / KK5F
:-)
-------------------------

> And with the right size loading coil could it be used on 630
> and 2200 meters pedestrian mobile?

_________________________

> Another question -- if a right-sized capacity hat were added to
> the top of the whip, could this antenna be somewhat effective on
> 30 or 40 meters.
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