View Single Post
  #4   Report Post  
Old January 2nd 08, 08:37 AM posted to rec.radio.shortwave
RHF RHF is offline
external usenet poster
 
First recorded activity by RadioBanter: Jun 2006
Posts: 8,652
Default All Those Dallas Lankford Designed Active Antennas . . .

On Jan 1, 9:16*am, wrote:
I must be doing something right because we had another power outage
last night,
or early this morning from 1:00AM until 3:00AM.

I had restrung a 50' random wire antenna from the WR LWA-0130 Long
Wire Antenna Adapter mounted under the eves to a fiber glass pole tied
to a fence post.

I compared three antennas, a Lankford "Simplified Complimentary
Antenna',
the same antenna with a built in Lankford "Norton RF amp" and the
LWZ-0130.

After a few tests I dropped the active with the built in Norton RF
amp. Simply put,
there is still too much background noise to make the amp useful.

I A/B tested the other 2 from CB, 27.035 had a nice distance
conversation, down to 100KHz Loran *C. As expected the Lankford
"Simplified Complimentary Antenna' was the winner. At every frequency
the signals were cleaner on the Lankford antenna, though in many cases
the difference was just noticeable.

At 3:03AM when the AC came back on, the LWA-0130 and 50' random wire
antenna became nearly useless. The QRM jumped up to at least S3 up to
15MHz on the LWA-0130. The noise increased on the Lankford active
antenna rose as well, but never reached S1.

As I thought, if one lives in a remote RFquite area the typical random
wire
antenna is clearly a worthwhile antenna. In built up and noisy areas
it's
utility decrease.

I admit that I need to mount the LWA-0130 at least 50' from our home,
but
that isn't practical right now.

Terry


Terry,

All Those Dallas Lankford Designed Active Antennas . . .
Need a Guide to What-is-What.

A = Lankford "Simplified Complimentary Antenna" (SCA)

B = Lankford SCA with a built in Lankford "Norton RF Amp"

1 - Lankford redesigned PA0RDT micro-whip
with a base mounted Lankford amplifier ? ? ?

2 - Dallas Lankford "Simplified Complimentary Antenna" (SCA)
Push-Pull Output Active Whip Antenna
-by- Dallas Lankford - 12 DEC 2007
DL-SCA [TINY-URL*] - http://tinyurl.com/34qbf2
* For this very long Link/URL :
http://www.kongsfjord.no/dl/Antennas...ennas%20II.pdf

3 - Lankford Micro Active Antenna ? ? ?

4 - Dallas Lankford's Simpler Active Dipoles {Antennas}
http://www.kongsfjord.no/ -&- http://www.kongsfjord.no/dl/
Low Noise Active Antennas AC/DC Power Supplies (PS)
-by- Dallas Lankford - 17 FEB 2007
DL-PS [TINY-URL*] - http://tinyurl.com/2va2a6
* For this very long Link/URL :
http://www.kongsfjord.no/dl/Antennas...plies%20II.pdf
-Note- Page # 3 Has a "Info" on more
new Active Whip & Dipole Antennas

5 - Stock PAORDT Mini-Antenna
http://www.kongsfjord.no/dl/Antennas...20Antennas.pdf

6 - Dallas Lankford - LW-MW-SW "Relay Tuned"
Fifteen Foot (15') Noise Reducing Vertical Antenna
DL-15V [TINY-URL*] - http://tinyurl.com/2ncu3n
* For this very long Link/URL :
http://www.kongsfjord.no/dl/Antennas...%20Antenna.pdf
This Lankford 15' Relay Switched Antenna.
It is elevated* with a set of 16 15' elevated radials.
* Mounted about 3' (1M) above the ground.
CopyRight © Dallas Lankford - All Rights Reserved.