Elecraft

kx1 and earchi

Classic

List

Threaded

4 messages Options

kg8jk

kx1 and earchi

Just picked up a couple of toroids at a swap and want to make an earchi antenna for the kx1. As I want to take this backpacking the plan is to connect directly to the radio and use a counterpoise instead of using coax in order to save weight. Has anybody found the secret length for the antenna to tune 20-80? How about counterpoise length? I did see a post that suggested that over .05 wl on the counterpoise for an EFHW didn't yield much improvement on performance.

Just wanting to keep things as light as possible. Not even sure if I will use a case for the toroid, maybe just a pigtail with a bnc on it.

73
KG8JK

ae5ka

Re: kx1 and earchi

Try about 12 feet of RG-174 between your rig and your earchi transformer.
That will make your .05 wl counterpoise for 80m without much weight and
without much loss on the higher frequency bands.

Chip
AE5KA

On Sun, Feb 12, 2017 at 6:42 AM, kg8jk <[hidden email]> wrote:

> Just picked up a couple of toroids at a swap and want to make an earchi
> antenna for the kx1. As I want to take this backpacking the plan is to
> connect directly to the radio and use a counterpoise instead of using coax
> in order to save weight. Has anybody found the secret length for the
> antenna
> to tune 20-80? How about counterpoise length? I did see a post that
> suggested that over .05 wl on the counterpoise for an EFHW didn't yield
> much
> improvement on performance.
>
> Just wanting to keep things as light as possible. Not even sure if I will
> use a case for the toroid, maybe just a pigtail with a bnc on it.
>
> 73
> KG8JK
>
>
>
> --
> View this message in context: http://elecraft.365791.n2.
> nabble.com/kx1-and-earchi-tp7626722.html
> Sent from the Elecraft mailing list archive at Nabble.com.
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> 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]
>

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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]

Don Wilhelm

Re: kx1 and earchi

Chip,

A length of wire is much lighter than any coax, including RG-174.
Important for those backpacking.

73,
Don W3FPR

On 2/12/2017 8:52 AM, Chip Stratton wrote:
> Try about 12 feet of RG-174 between your rig and your earchi transformer.
> That will make your .05 wl counterpoise for 80m without much weight and
> without much loss on the higher frequency bands.
>
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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]

ae5ka

Re: kx1 and earchi

I've done a lot of backpacking, and used a fair amount of RG-174. 12 or 13
feet of that weighs very little - about 13 grams or 1/2 oz., and would add
to flexibility of antenna placement too.
Thats my experience anyway.

73
Chip
AE5KA

On Sun, Feb 12, 2017 at 11:26 AM, Don Wilhelm <[hidden email]>
wrote:

> Chip,
>
> A length of wire is much lighter than any coax, including RG-174.
> Important for those backpacking.
>
> 73,
> Don W3FPR
>
>
> On 2/12/2017 8:52 AM, Chip Stratton wrote:
>
>> Try about 12 feet of RG-174 between your rig and your earchi transformer.
>> That will make your .05 wl counterpoise for 80m without much weight and
>> without much loss on the higher frequency bands.
>>
>>