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Old January 1st 08, 06:16 PM posted to rec.radio.shortwave
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First recorded activity by RadioBanter: Dec 2007
Posts: 57
Default Experiences during a power outage.

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
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Old January 1st 08, 09:26 PM posted to rec.radio.shortwave
external usenet poster
 
First recorded activity by RadioBanter: Jun 2006
Posts: 317
Default Experiences during a power outage.

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


Loop antennas are better at rejecting man made noise. I think I've
plugged Wellbrook too much already on the group, but their products
are the way to go for urban environments. But even in the boonies, my
ala100 and homemade loop worked better than about 80ft of wire and the
palomar magnetic balun.

The advantage to the loop is you can rotate it to null the noise
source if the frequency is relatively low. Certainly for MW and
lower.
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Old January 1st 08, 09:45 PM posted to rec.radio.shortwave
external usenet poster
 
First recorded activity by RadioBanter: Dec 2007
Posts: 57
Default Experiences during a power outage.

On Jan 1, 8:26 pm, wrote:
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


Loop antennas are better at rejecting man made noise. I think I've
plugged Wellbrook too much already on the group, but their products
are the way to go for urban environments. But even in the boonies, my
ala100 and homemade loop worked better than about 80ft of wire and the
palomar magnetic balun.

The advantage to the loop is you can rotate it to null the noise
source if the frequency is relatively low. Certainly for MW and
lower.


I owned a Wellbrok ALA1530 for several weeks and found it to be
inferior to a
active dipole in terms of beam width and ability to operate within a
strong MW
environment. I live within 3 miles of 2 MW stations that give any
device with
active components a work out. I found the WL1030 to be at least the
equal of,
and frequently better then the ALA1530. Both were inferior to the
active dipole.

I wanted to test my hypothesis that in very quiet, low RF noise,
locations, the
type of antenna was not of extreme importance. I think I have verified
that the
worst your environment, the more balanced and antenna must be.
Balance,
in general, reflects the ability to be easily isolated from the RF
common mode
noise generated in almost every modern home.

No noise means 'anything' goes. Within reason.

If you are a fan of loops I urge you to check the WL1030 web page.
PCBs are no
longer available, but even with SMC it can be built with minimum
trouble. The only
disagreement I have with the guys at the WL1030 site is their
insistence up the
need for a hard to get Litz wire for the loop. It might make a
difference at LF but
I really couldn't tell the difference between Litz, solid or stranded
copper wire.

To steer the beam I use a 'phaser'. I can get slightly better results
with a horizontal
active dipole, but that requires a rotator. With a phaser all I need
to do is to turn a
switch then a pot. Life is GOOD.

We have been told they will have to kill the power for up to an hour
at 5:00PM. Getting
kind of chilly around here....But I am testing my theory by running an
antenna straight
a 20' fiber glass rod/pole through the window to the receiver. No
external matching
transformer and no coax in the system. I suspect it will work very
well as long as the
power is off. I will report the results either this evening or Monday.

If the power is off very long and the temps drop as fast as I expect I
may have to fire up
a genset and then all DXing is over.

Terry
  #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.
  #5   Report Post  
Old January 3rd 08, 12:31 AM posted to rec.radio.shortwave
RHF RHF is offline
external usenet poster
 
First recorded activity by RadioBanter: Jun 2006
Posts: 8,652
Default Simplifying the Dallas Lankford "Relay Tuned" Fifteen Foot (15')Noise Reducing Vertical Antenna for Shortwave Listening (SWL) Only

On Jan 1, 11:37*pm, RHF wrote:
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...ementary%20Pus...

3 - Lankford Micro Active Antenna ? ? ?

4 - Dallas Lankford's Simpler Active Dipoles {Antennas}http://www.kongsfjord.no/-&-http://w...gsfjord.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...ve%20Antennas%...
-Note- Page # 3 Has a "Info" on more
new Active Whip & Dipole Antennas

5 - Stock PAORDT Mini-Antennahttp://www.kongsfjord.no/dl/Antennas/Simplified%20Complementary%20Pus...

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...20Tuned%20Nois...
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.
*.
*.
Kongsfjord - 70°43'N 29°21'E -Main WebPage-
Welcome to the KONG DX-Pedition WebPages.
KONGSFJORD -http://www.kongsfjord.no/
CopyRight ©www.kongsfjord.noAll Rights Reserved.
*.
*.
The Dallas Files {-aka- Dallas Lankford Files}http://www.kongsfjord.no/dl/dl.htm
All Articles on these WebPages are CopyRight © by Dallas Lankfordhttp://www.kongsfjord.no/dl/Dallas%20n%20Muffy%204-05.JPG
Collection of Useful Modifications and Projects
-by- Dallas Lankford
-hosted by- Kongsfjord.No website
-Note- These Files are in the "PDF" format and require the use
of Acrobat Reader 5.0 or higher to View and Print them properly.
*.
*.
Antennas and Pre-Amplifiers -by- Dallas Lankford
-hosted by- Kongsfjord.No websitehttp://www.kongsfjord.no/dl/dl.htm#Antennasand preamplifiers
CopyRight © Dallas Lankford - All Rights Reserved.
-Note- These Files are in the "PDF" format and require the use
of Acrobat Reader 5.0 or higher to View and Print them properly.
List of these Dallas Lankford Antennas and Pre-Amplifiers Files :
* Close Spaced Phased MW Verticals
* Common Base Transformer Feedback Norton Amplifiers
* IIP2 Adjustments For Active Whip Antennas
with FET Gate Bias Adjustment NEW !
* Loop Antenna Sensitivty
* Low Noise Active Antenna AC/DC Power Supplies
* LW-MW-SW Relay Tuned 15' Noise Reducing Vertical Antenna
* Measurements of Some Antennas Signal
to Man Made Noise Ratios
* MW And LW Noise Reducing Antennas *UPDATED !
* MW Filter # 3
* Simplified Complementary Push-Pull Output
Active Whip Antennas UPDATED !
* Some of My Favorite Small Antennas for MW and LW
* SW Filter # 2
* Variations Of Misek's Center Fed Micro SWA
*.
*.
FWIW - Dallas Lankford resides in Ruston, Louisiana -USA-http://www.kongsfjord.no/dl/Dallas%20n%20Muffy%204-05.JPG
Ruston is along the I-20 between Shereveport and Monroe
in less-south {northern} Louisiana.
*.
*.
needed a guide to track all the antenna references ~ RHF
*.- Hide quoted text -

- Show quoted text -


Simplifying the Dallas Lankford "Relay Tuned" Fifteen Foot (15')
Noise Reducing Vertical Antenna for Shortwave Listening (SWL) Only

WRT - # 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

CopyRight © Dallas Lankford - All Rights Reserved.

This is basically a Dual-Band "Relay Switched" Passive {meaning
Non-Amplified} Vertical Antenna using a Matching Transformer;
Ground Rod; and Line Isolator.

If you did not want the AM/MW Band and Longwave Band coverage;
and are 'only' Interested in the Shortwave Bands between 3 MHz ~
18 MHz : A 'non-relay' Single Band Passive Vertical Antenna would
be simpler choice.
100% PASSIVE : +No Relay +No DC Power Required

The Original Lankford :
For the 8 MHz ~ 30 MHz High Shortwave Band this Antenna uses a
4T to 10T (1:6) Matching Transformer at the Base of the 15-Foot
Vertical Antenna mounted on a 4~8 Foot Ground Rod.
Plus a 4T to 4T (1:1) Matching Transformer as a Line Isolator.

MODIFIED : For General 'Middle' Shortwave Radio Bands :
60 Meters - 4400~5100 kHz
49 Meters - 5800~6300 kHz
41 Meters - 7100~7600 kHz
31 Meters - 9250~9995 kHz
25 Meters - 11.50~12.16 MHz
22 Meters - 13.57~13.87 MHz
19 Meters -15.00~15.825 MHz

For a 4.4 MHz ~ 15.9 MHz Shortwave Band coverage this Antenna
would use a 8T to 20T {-or- 7T to 18T} (1:6) Matching Transformer
at the Base of the 15-Foot Vertical Antenna mounted on a 4~8 Foot
Ground Rod.
Plus a 8T to 8T (1:1) Matching Transformer as a Line Isolator.


Antenna Side-by-Side : The Lankford Vertical -v- The Doty Inverted
"L"
It would be interesting to build one and run it along-side a "Doty"
Low Noise Inverted "L" Antenna using a 10T to 30T (1:9) Matching
Transformer at the Base of the 15-Foot Vertical-Up-Leg mounted
on a 4~8 Foot Ground Rod with a 30~45 Foot Horizontal-Out-Arm.
Plus a 10T to 10T (1:1) Matching Transformer as a Line Isolator.

-Note- Separating both Bases of the Antennas by 30-Feet or more.


iane ~ RHF


  #6   Report Post  
Old January 3rd 08, 06:35 AM posted to rec.radio.shortwave
external usenet poster
 
First recorded activity by RadioBanter: Jun 2006
Posts: 317
Default Experiences during a power outage.

On Jan 1, 12:45 pm, wrote:
On Jan 1, 8:26 pm, wrote:



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


Loop antennas are better at rejecting man made noise. I think I've
plugged Wellbrook too much already on the group, but their products
are the way to go for urban environments. But even in the boonies, my
ala100 and homemade loop worked better than about 80ft of wire and the
palomar magnetic balun.


The advantage to the loop is you can rotate it to null the noise
source if the frequency is relatively low. Certainly for MW and
lower.


I owned a Wellbrok ALA1530 for several weeks and found it to be
inferior to a
active dipole in terms of beam width and ability to operate within a
strong MW
environment. I live within 3 miles of 2 MW stations that give any
device with
active components a work out. I found the WL1030 to be at least the
equal of,
and frequently better then the ALA1530. Both were inferior to the
active dipole.

I wanted to test my hypothesis that in very quiet, low RF noise,
locations, the
type of antenna was not of extreme importance. I think I have verified
that the
worst your environment, the more balanced and antenna must be.
Balance,
in general, reflects the ability to be easily isolated from the RF
common mode
noise generated in almost every modern home.

No noise means 'anything' goes. Within reason.

If you are a fan of loops I urge you to check the WL1030 web page.
PCBs are no
longer available, but even with SMC it can be built with minimum
trouble. The only
disagreement I have with the guys at the WL1030 site is their
insistence up the
need for a hard to get Litz wire for the loop. It might make a
difference at LF but
I really couldn't tell the difference between Litz, solid or stranded
copper wire.

To steer the beam I use a 'phaser'. I can get slightly better results
with a horizontal
active dipole, but that requires a rotator. With a phaser all I need
to do is to turn a
switch then a pot. Life is GOOD.

We have been told they will have to kill the power for up to an hour
at 5:00PM. Getting
kind of chilly around here....But I am testing my theory by running an
antenna straight
a 20' fiber glass rod/pole through the window to the receiver. No
external matching
transformer and no coax in the system. I suspect it will work very
well as long as the
power is off. I will report the results either this evening or Monday.

If the power is off very long and the temps drop as fast as I expect I
may have to fire up
a genset and then all DXing is over.

Terry


I have the ALA100. No problems whatsoever. No need to fiddle with
antennas, though I do design different portable loops for use in the
field. [In the boonies, more is more.]

I have no problem with overload with the ALA100. I am within 5 miles
of a 50KW MW radio station.

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