Interesting Antenna StuffInteresting Antenna Stuff

Ray Sokola K9RS

Just some stuff to think aboutJust some stuff to think about

• G0KSC LFA,OWL etc

• 4 - 40 meter antennas in phase

• N6BT new stuff

• C3S Moxon by K9RS

• HEX

• FG-01 a nice present!

G0KSCG0KSChttp://www.g0ksc.co.uk/

OWA Optimized Wideband Array

OWL Optimized Wideband Low impedance

LFA Loop Fed Array

OP-DES Opposing Phase Driven Element System

G0KSC Loop Fed Antenna

2 EL 10M LFA between 2 5 EL 6M LFA’s

The OP-DES Yagi

Opposing Phase Driven Element System Reduces side lobes and helps provide a much wider band antenna with constant performance

characteristics

2 element 28MHz OP-DES Yagi

another development of Justin Johnson, G0KSC

Available from http://store.rlham.com

40 M stacks

The bottom antenna

can be pretty lowcan be pretty low, in

fact lower than most people think

A nice system for 40M @NN1N

“…spaced 2 of my Rohn 45s 100 feet apart broadside to about 60 degrees az.  Put 402CDs at about 100/50 on each tower.  Good for about 12.25 db on signals at 22 degrees elevation.  It is showing that gain pretty consistently.  Usually EU sigs are about 5 to 10 db above the 2 el rotatable (much higher on another tower on top of the hill) by itself…”

Whatever happened to Whatever happened to

Tom Schiller, N6BT,Tom Schiller, N6BT,

from Force 12 ?from Force 12 ?

Founder of Force12

Team Vertical

This is a

Must Read !

N6BT makes the best antennas; others make comparisons. 

• New 5-band Yagi and Rotary dipole for HF  • Bravo Series Vertical Dipoles for HF     • Bravo Series 5 & 7 band for fixed, portable,

expedition       • Bravo Series single band and 2-element

SBVAarrays               • 160 DXpedition vertical used to set QRP and LP

Records• 3 element 20 and 2 element 40    

Q52 Relay-switched 20-17-15-12-10 meter Yagi

Q52

5-band Remote Switched 2el Yagi

20-17-15-12-10 meters

3' sections, Integrated Balun

16' long elements, 9' boom, 9' rotating radius

<2sqft windload, 17 pounds, KW

Minimum 85% efficient

100 mph survival

Gain: >3.2dBd all bands, min 8-10dB F/B all bands

Intro price of only $549

20 meter 2 element Bravo mounted at 6' with remote switching on the parasitic element to

change direction

K9RS C3S Moxon

• What do you do when the movers bend the ends of your 20M elements to fit in the moving van?

• You make it into a pseudo moxon

I use a C3S with the 20 meter elements shortened

by folding in using wireand nylon line

Hex Beams

They work pretty well

DX Engineering HEXX

JY7P

HEX

This is what it

Looks like if the

Center post

Breaks!

For Hex beams the centerSupport is critical

The original with two ‘W’ shapped elements

New style HEX with ‘U’ shaped reflector

http://hizantennas.com

Hi-Z 4-8PRO Eight Element Tri-Band Array System

I'm sitting here listening to TX7M on 1831.7. Conditions are not good this morning and he's peaking about S5/S6 on the TX four square but takes long, deep fades down to S0, occasionally not even copyable. Other than an occasional static crash of S7, my S meter on the FT1000MP is sitting on S0. . .no bars even lit. The TX7 will fade down to where I can just barely tell he's there on the TX four square. When I switch to the 8 circle he's Q5 copy with an S4 meter reading! So not only does the 8 circle hearing him with a better SNR, but it's actually hearing him with greater absolute signal strength. It's totally amazing. I sit here and keep switching back and forth between the TX and RX arrays, thinking I'm doing something wrong or overlooking something. Now I know the TX four square hears very, very well. But the degree that the 8 circle is hearing better, both SNR and absolute signal level, is phenomenal. It's enough to make me almost think maybe I need to check out the TX four square when it gets to be daylight. You have absolutely hit the mark with the Plus6 amp. 73. . . Dave W0FLS

Hi-Z 4-8PRO Eight Element Tri-Band Array System

The 4-8PRO can be scaled to fit in a smaller footprint for more space restricted locations with only a very minimal decrease in 160 meter performance. The smallest area that can be accomplished is a 42.5 foot radius or 85 foot diameter circle.

RDF

RDF is the difference between the  maximum forward gain in the direction of interest and the average gain in all directions of an antenna.

http://www.k7tjr.com/rx1comparison.htm

FG-01 Antenna Analyzer

TEN-TEC is proud to announce that we are the exclusive distributor in the US for YouKits brand products.

$249

FG-01 specs Power consumption: About 400 mA

Frequency Range: 1-60 MHzOutput: 15 dbmCenter Frequency Step: 1K, 10K, 100K, 1MHz

Scan Width of Display: 10K, 20K, 50K, 100K, 200K, 500K, 1M, 2M, 5M, 10M, 20M, 50M

Operating Power: 10-12.8VDC @500 maDimensions: 3.8" X 2.3" X 1.5"Weight: 13.5 oz with battery

Comet CAA-500

• CAA-500 Commercial Grade SWR/Impedance Analyzer

• Range: 1.8 - 500MHz (including 222MHz band)

• $439.00 @ CheapHam.com

Starting at $1139

33 ft Inflatable Tower for Amateur Radio

http://www.ltaprojects.com/

• http://www.youtube.com/watch?feature=player_embedded&v=6yP5ZzTbZf8

• http://www.youtube.com/watch?v=alsUtjxKIOQ&feature=related