Amateur Radio Station

K3LR – FCC licensed since 1972

Designed and Engineered specifically for Multi Multi DX Contest Operations + HF Emergency Radio Response

Towers = 13 (Includes 8 dedicated towers used for 80 meter full size, base insulated (series fed) verticals that are used in a 2X Phased 4 square array)

160 meters Station #1

The main TX and RX antenna is a 5 Element, electronically relay switchable,
Directional (4 directions with 32 dB of F/B), vertical Yagi. 23,000 meters of radials. 37 meter AB-105 style (18 inch face) base insulated tower for the driven element and 4 "T" wire parasitics. See ON4UN 4th edition Low Band DXing book for details.
The radio is a Icom 7800 with a single band 8877 amplifier

80 meters Station #1

The antenna is two full size, self supporting (23 meters tall x 8), phased, 4 squares that are spaced 5/8 wavelength apart. The squares can be fed broadside (45 and 255 degrees) or end fire (135 and 315 degrees). 31,000 meters of radials with two Comtek Systems Hybrids and a custom splitter switch. The operator can select one or two 4 squares in each direction.
The radio is a Icom 7800 with a single band 8877 amplifier

**Interlocked with**

80 meters Station #2

M2 with W6ANR element coils - rotating dipole at 74 meters (96 feet long). Can be remotely tuned 3.5 to 3.9 MHz via K6AJ motorized "Tornado" center coil.
The radio is a Icom 781 with a single band 8877 amplifier

40 meters Station #1

4L/4L = 8 element stacked array (15 meter booms- each antenna weighs 370 lbs.) Full size WA3FET OWA Yagis at 59 meters(Prop Pitch) and 36 meters (TIC ring rotor)
PiRod 24 inch face tower. Switching allows operator choice of TOP only, Both In Phase, BOTTOM only or Both Out of Phase
The radio is a Icom 7800 with a single band 8877 amplifier

**Interlocked with**

40 meters Station #2

2L/2L = 4 element stacked array W6NL Moxon design (7 meters boom) at 57 meters (TIC ring rotor) and 37 meters (TIC ring rotor). Switching allows operator choice of TOP only, Both In Phase, BOTTOM only or Both Out of Phase.
The radio is a Icom 781 with a single band 8877 amplifier

20 meters Station #1

WA3FET Yagi OWA design 6L/6L/6L/6L = 24 element stacked array (15 meter booms) at 71 meters(Prop Pitch)/52 meters (TIC ring rotor)/34 meters (TIC ring rotor)/15 meters(TIC ring rotor)
PiRod 18 inch face tower

Switching allows 10 combinations of antenna selection by the operator. Top, High Mid, Low Mid, Low, All Four, Top Three, Bottom Three, Top Two, Middle Two or Bottom Two.
The radio is a Icom 7800 with a single band 8877 amplifier

**Interlocked with**

20 meters Station #2

M2 Yagis 6L/6L = 12 element stacked array (19 meter booms) at 46 meters (TIC ring rotor) over 31 meters (TIC ring rotor). Switching allows operator choice of TOP only, Both In Phase, BOTTOM only or Both Out of Phase
Comtek ground mounted 4 square with 60 radials per element (Receive only)
The radio is a Icom 781 with a single band 8877 amplifier

15 meters Station #1

WA3FET Yagi OWA design 7L/7L/7L/7L = 28 element stacked array (15 meter booms) at 50 meters(PropPitch)/37 meters(TIC ring rotor)/25 meters(TIC ring rotor)/12 meters(TIC ring rotor)
PiRod tower (18 inch face)
Switching allows 10 combinations of antenna selection by the operator. Top, High Mid, Low Mid, Low, All Four, Top Three, Bottom Three, Top Two, Middle Two or Bottom Two.
The radio is a Icom 7800 with a single band 8877 amplifier

**Interlocked with**

15 meters Station #2

M2 Yagis 6 ele/6 ele = 12 element stacked array (12 meter booms) at
25 meters(TIC ring rotor) and at 12 meters fixed at 150 deg (can be stacked or fed separate)
The radio is a Icom 781 with a single band 8877

10 meters Station #1

WA3FET Yagi OWA design 8L/8L/8L = 24 element stacked array (15 meter booms) at 30 meters(Create)/20 meters(TIC ring rotor)/10 meters(TIC
ring rotor)
Tower AB-105 style (18 inch face)
The radio is a Icom 781 with a single band amplifier

**Interlocked with**

10 meters Station #2

M2 Yagis 7L/7L/7L = 21 element stacked array (14 meter booms) at 61 meters(Prop Pitch)/25 meters(TIC ring rotor)/15 meters fixed at 150 deg. The operator can choose 7 selections. Top, Middle, Bottom, All Three, Top Two, Bottom Two, High/Low. 5/8 wavelength vertical at 61 meters.
Comtek ground mounted 4 square with 5/8 wavelength verticals. There are 60 ½ wavelength radials per element (Receive Only)
The radio is a Icom 781 and a single band 8877 amplifier

RX antennas - Available to all (5) K3LR stations on 160, 80 and 40 meters via K9AY TriPlex distribution system (Receive Antenna Select).
4 Beverages
2 are single wire reversible feeds for 45/225 and 135/315 degrees (270 meters long) direction controlled by the 80 meter #2 operator
One is a single wire 308 meters on EU/SW K9AY transformers (reversible feeds)
One is a single wire 308 meters on Asia/South America K9AY transformers (reversible feeds) direction controlled by the 160 meter operator.
Low dipoles for 160 and 80 meters at 5 meters high
DX Engineering receiving 4 square (98 foot spacing) with 160 meter mobile antennas (4) 3 ground rods per element and at array center.
meters. Use DX Engineering Noise Canceling Controller (NCC-1) on 160 meters

Radios are 5 Icom IC-7800 and 12 Icom IC-781 Transceivers with high performance PIN diode front end mods and W3NQN bandpass filters for TX/RX and W2PV RX. Harmonic suppression stubs.

Amplifiers are Single band homebrew single 8877 tube at 1500 watts output

Headsets are Bose QC-1 and QC-2 with Heil HC5 boom microphones

Contest software is latest WinTest version on 13 dedicated Pentium Windows XP computers custom built by Dave, W9ZRX

Network is 100 base T wired Ethernet

Coffee brewing system is the Flavia S350 and SB100. 30 selections of Coffee and Tea available for the K3LR team.

Keys are Bencher

Contest club is North Coast Contesters

Location is West Middlesex, PA – Mercer County - Grid EN91se

Logs and instant QSLs via ARRL LoTW and eQSL

QSL info Direct OK (no SASE needed), Via the Buro, eQSL, or LoTW

K3LR DX Cluster (maintained by Dave, W9ZRX) runs AB5K AR Cluster software and is available on 144.97 MHz for Western Pennsylvania and Eastern Ohio running 50 watts to an antenna at 61 meters and supporting connections all over the world via telnet://dx.k3lr.com

K3LR Web page is http://www.k3lr.com

Email to k3lr@k3lr.com

Comments: Hope we see you in the next contest!

Updated 01/23/08