EH Antenna test using K2

[Charles Greene]

To All,

Tony Wells, G7IGG <[hidden email]>  and I are testing an EH
antenna vs a normal 1/4 wave dipole and we need some signal reports.

The test is using my K2 and Tony's Beacon Monster software.  I am operating
a manually controlled beacon on 14.102 MHz.  The software times the beacon
and commands the K2 to send a brief message on one antenna then switches
antennas and sends on the other.  See http://www.tinyurl.com/6oh59    for
details of the message and the status of beacon.

This is an example of what you can do with the K2.

Please send signal reports to me.  The best way to measure the signal
report is to use Spectrogram, MixW or Spectran to measure the signal
strength.  If you can record a .wav file with the AGC off, please send it
and  I can analyze it with Spectrogram.

Locally and in US, preliminary results indicate the 1/4 wave dipole is 3 to
6 dB stronger than that from the EH antenna.  I have some reports from
European stations that the EH is 3 to 6 dB stronger, but I have a very
small sample; that's why I need more reports.  The old adage that a
vertical antenna radiates equally poorly in all directions may not be
true.  These antenna may have some directivity.


73,  Chas,  W1CG

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[Tony Wells]

Just a note to add some info to Charles' request for listener reports.

The latest version of the K2 Beacon Monster software is designed for use in
attended mode, as well as unattended mode. Attended mode is probably the
only allowable HF beacon mode for most hams in most countries due to licence
restrictions.

Because attended mode means that the beacon may be down at random times (e.g
when the operator goes to bed!), the software frequently uploads a status
page to a designated website. The page gives details of the time of next
transmission, the format of the transmission, and carrier power sequence
information. It also gives the equipment list and locator info. All this
stuff is compiled automatically from the beacon settings.

The software takes advantage of the K2's accessory set that allows dual
antenna switching and so Charles is able to use the beacon  to transmit on
two different antennas so helping do antenna comparisons.

Lastly, to keep the beacon transmission times reasonably accurate, it makes
use of Internet time sources to help keep transmission within a few seconds
off the time stated on the status page.

See http://www.tinyurl.com/6oh59    for  details of the message and the
status of beacon.

Regards

Tony
G7IGG

----- Original Message -----
From: "Charles Greene" <[hidden email]>
To: <[hidden email]>
Sent: Sunday, March 13, 2005 2:11 AM
Subject: [Elecraft] EH Antenna test using K2

> To All,
>
> Tony Wells, G7IGG <[hidden email]>  and I are testing an EH
> antenna vs a normal 1/4 wave dipole and we need some signal reports.
>
> The test is using my K2 and Tony's Beacon Monster software.  I am
> operating a manually controlled beacon on 14.102 MHz.  The software times
> the beacon and commands the K2 to send a brief message on one antenna then
> switches antennas and sends on the other.  See
> http://www.tinyurl.com/6oh59    for details of the message and the status
> of beacon.
>
> This is an example of what you can do with the K2.
>
> Please send signal reports to me.  The best way to measure the signal
> report is to use Spectrogram, MixW or Spectran to measure the signal
> strength.  If you can record a .wav file with the AGC off, please send it
> and  I can analyze it with Spectrogram.
>
> Locally and in US, preliminary results indicate the 1/4 wave dipole is 3
> to 6 dB stronger than that from the EH antenna.  I have some reports from
> European stations that the EH is 3 to 6 dB stronger, but I have a very
> small sample; that's why I need more reports.  The old adage that a
> vertical antenna radiates equally poorly in all directions may not be
> true.  These antenna may have some directivity.
>
>
> 73,  Chas,  W1CG
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
>

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