[HCDX] Re: Pennant Antenna with Remote Termination Control

["Andy Ikin" <sales@xxxxxxxxxxxxxxxx>]

Hi Mark,

Thanks for the info, this is a great idea in re-using the remote termination
developed for the Beverage and the K9AY.

Taking an other look at amplifiers for the Pennant. I would suggest using a
Hi z input balanced J fet or mos fet amp directly at the antenna. This would
provide a good match to the antenna z and provide the 50 Ohm feeder match.
More importantly, this would improve the common mode feeder/antenna
isolation. Using additional amplification at the receiver end of the feeder
may amplify the signal pick-up on the feeder and degrade the F/B.

Btw. a simple balanced transformer F/B FET amp using say 4 J309 in a unity
gain voltage amp ( 13dB power gain 1k input to 50ohm output ) would give
nearly +66dBm IP2 and about +33dBm IP3. However, I may be guilty of over
specifying the amplifier Intermod performance in view of the low output of
the Pennant at  Long and Medium wave.



Regards

Andy

Andy Ikin   e-mail: sales@xxxxxxxxxxxxxxxx
          andy@xxxxxxxxxxxxxxxx
                      aikin@xxxxxxxxxxxxxxx
     URL: http://www.wellbrook.uk.com

Wellbrook Communications
Wellbrook House, Brookside Road,
Bransgore, Christchurch, Dorset          BH23 8NA. UK.
Tel. 01425 674174 Int.+44 1425 674174

Manufacturers of Broadband Loop Antenna

-----Original Message-----
From: Mark Connelly <MarkWA1ION@xxxxxxxxxx>
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Date: 28 July 2000 17:24
Subject: Pennant Antenna with Remote Termination Control


>The initial version of my new article "Pennant Antenna
>with Remote Termination Control" is now available at
>"http://members.aol.com/DXerCapeCod/pennant.htm"; .
>It contains descriptive text, circuit drawings, and
>data tables and graphs of test results.
>
>This articles builds upon the excellent article "Flags,
>Pennants, and Other Ground-Independent Low-Band
>Receiving Antennas" by Earl W. Cunningham, K6SE,
>in the July 2000 edition of QST magazine.
>
>What I have done is to provide a way to adjust
>termination resistance remotely from the comfort
>and convenience of the operating position.  The
>need for doing this is made apparent by test data
>showing that the null bearing may be moved to
>a certain extent by means of changing this
>resistance.
>
>=====
>
>Mark Connelly - WA1ION - Billerica, MA, USA
>e-mail: MarkWA1ION@xxxxxxxxxx
>homepage: http://members.aol.com/MarkWA1ION/weblink.htm
>
>=====
>
>
>
>
>
>_______________________________________________________
>Say Bye to Slow Internet!
>http://www.home.com/xinbox/signup.html
>

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