[SFDXA] Recieve Antenna

[fishokee]

i folks. Please help me with my new project, I'm selling my Big Waller
Flag.



I would like to share with you the excellent and constant  results on 160
using a Waller Flag RX antenna. I live in a quiet suburban city lot, the
backyard it 100 x 150ft ( 30x45m), for reference the noise on my full size ¼
wave vertical TX antenna (116ft high with a HWF 44ft boom used as top hat)
is S7 with 500Hz BW during the winter and quiet as S3 on few cold winter
mornings after SR.



>From 2000 to Nov 2006 I worked 140 new countries on 160m and today I have
257 confirmed on 160m (39 zones, just missed Z23). The performance on 80m
and 40m is just phenomenal, but I have TBB, top band bug. I can't remember a
single DX expedition that was on and I was not able to hear on 80m during SS
or SR.



The WF is a low gain antenna (-43db) and it was necessary to control several
technical aspects. The RX works near its noise floor most of the time with
no S meter reading.



1-    Detune/neutralize the TX antenna during RX. No resonant antennas  near
(1000ft) including low dipole and elevated radials.

2-    Eliminate common mode noise using chokes on every single feed line,
and a good ground outside the shack wall.

3-    The radio must be  quiet on AM BC band when no antennas connected, no
S meter reading and only few audible high power BC carriers.

4-    Excellent station ground, avoiding ground loop with the house
electrical ground (single point of ground).

5-    Choke the vertical feed line in several places. Also the VHF feed line
normally grounded on the VHF boom antenna and at the VHF rig forming a big
loop with a grounded tower.

6-    Low NF preamplifier 20 db or more gain at the station, with dual
shield, electrical and magnetic(a cookie/food TIN plated steel box)..Choke
the 12Vdc too.



RDF is the most important feature of any RX antenna, The WF has real 11.5 db
RDF ( MAX 12 db RDF), it means you can hear signals up to 111.5 db bellow
your local noise, like using a TX antenna as RX. Most of the long distance
DX signal is near noise floor. The Horizontal WF works very well on long
path SSW SSE directions but the vertical WF is indispensable for north path,
including XU 9M2 BU T88 BY DU 4W6 9M0.



After 6 seasons delight using my BWF, Big WF because it has dual 20 x 10ft
loops, 32ft boom and 50ft total length. I decided to test a WF array and
build a Monster Waller Flag. The only way for me to know how 14.1 db RDF
compare with my actual 11.5 db RDF is experimenting with a 4 small loops
70ft boom antenna.



For this reason I'm selling my Big Waller Flag, including everything less
the rotor and the tower. However if you serous about RX on 160 the 1-6
recommendations above is required..



You can see the Big Waller Flag on my site  www.n4is.com , and if you
serious  interested in my post, please  contact me by e-mail
(n4isDOTn4is.com).



Here new ones on 160m  I worked and heard since my very first QSO with the
BWF, and it zone 22, a new one at that time. All 40 zones and over 260
countries hear so far. On 160m.



8Q7DV  9J2BO  YI9KT  1A4A  XT2C  VP8/LZ1UQ  VU7RG  ST2A  TA3D

T32MO  7Q7BP  J20RR  HC1HC  5T5SN  YW0DX  ZK3RE  VK9DNX

J5UAR  UK8DAN  FK8CP  AH2L  N8S  ZL6QH  V73NS  OX/NA1SA

3B7S 9Q1EK  A25OOK  OJ0B  VK9WWI  5L2MS  C52C  5H3EE  4S7NE

YK9SV  RA0ALM  HS0ZEE  EY7AF  C91KDJ  3B8CF  UN7AB  A71EM

TR8CA  TF3CW  FO/OH1RX  TO5FJ  4L2M  TI9KK  VP6DX  4U1UN

SV9/DJ7RJ  TX5C 9X0R  9L1X  T33ZZ  TK9R  ZA/I8YGZ  JW7QIA  J88DR

T31DX  TN5SN  7Z1SJ  FW5RE  K5D  V5/DJ4SO  JD1BMM  S04R

FR5DN  7P8MM  TO7RJ  3D2KJ  TX5SPA  K4M  ZY0T  YJ0CCC  XR0Y

TX3A  5N0OCH  VP8BUG  9M2AX  XR0ZA  EA9EU  TX4T  C21DL

BA7IO  B1Z  YC0LOW/1 S79GM   3B9WR  XU7ACY  5R8RJ  PJ6A  PJ4B

PJ2T  5V7TT  PJ7E  A92IO  C37N  JT5DX  5X0CW  BU2AQ  RI1FJ  ZL8X

JD1BMH  VU2PAI  HL5IVL  VP8ORK  S9DX  ZD9GI TJ9PF  T30YA  T80W

VK9HR  ST0R  4W6A  3D2R  TL0CW Z22CW  TU2T  T2T  DU1/JJ5GMJ

HK0NA  VP6T  4U1WRC  YB8B  ZD7XF  3C0A  E51M  9M0L





Good luck and be prepared for the next solar low, 160m will be again THE
BAND for several years ahead, maybe next 50 years.



Regards



Jose Carlos

N4IS



From: N4IS JC [mailto:n4is at n4is.com]
Sent: Sunday, April 22, 2012 3:32 AM
To: 'N4IS JC'
Subject: BWF









8Q7DV  9J2BO  YI9KT  1A4A  XT2C  VP8/LZ1UQ  VU7RG  ST2A  TA3D

T32MO  7Q7BP  J20RR  HC1HC  5T5SN  YW0DX  ZK3RE  VK9DNX

J5UAR  UK8DAN  FK8CP  AH2L  N8S  ZL6QH  V73NS  OX/NA1SA

3B7S 9Q1EK  A25OOK  OJ0B  VK9WWI  5L2MS  C52C  5H3EE  4S7NE

YK9SV  RA0ALM  HS0ZEE  EY7AF  C91KDJ  3B8CF  UN7AB  A71EM

TR8CA  TF3CW  FO/OH1RX  TO5FJ  4L2M  TI9KK  VP6DX  4U1UN

SV9/DJ7RJ  TX5C 9X0R  9L1X  T33ZZ  TK9R  ZA/I8YGZ  JW7QIA  J88DR

T31DX  TN5SN  7Z1SJ  FW5RE  K5D  V5/DJ4SO  JD1BMM  S04R

FR5DN  7P8MM  TO7RJ  3D2KJ  TX5SPA  K4M  ZY0T  YJ0CCC  XR0Y

TX3A  5N0OCH  VP8BUG  9M2AX  XR0ZA  EA9EU  TX4T  C21DL

BA7IO  B1Z  YC0LOW/1 S79GM   3B9WR  XU7ACY  5R8RJ  PJ6A  PJ4B

PJ2T  5V7TT  PJ7E  A92IO  C37N  JT5DX  5X0CW  BU2AQ  RI1FJ  ZL8X

JD1BMH  VU2PAI  HL5IVL  VP8ORK  S9DX  ZD9GI TJ9PF  T30YA  T80W

VK9HR  ST0R  4W6A  3D2R  TL0CW Z22CW  TU2T  T2T  DU1/JJ5GMJ

HK0NA  VP6T  4U1WRC  YB8B  ZD7XF  3C0A  E51M  9M0L