Amateur Radio Station - K3LR – FCC licensed since 1972

Designed and Engineered specifically for Multi Multi DX Competition Operations + high frequency Emergency Radio Response – world wide communications via wireless

Towers = 13 (Includes 8 dedicated Rohn BX self supporting towers used for the 80 meter full size, base insulated (series fed) verticals that are configured 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 PiRod #24 (24 inch face) base insulated tower for the driven element and 4 "T" wire parasitics. See ON4UN 4th and 5th editions of The Low Band DXing book for details. The radio is a Icom IC-7851 with a single band, single 8877 amplifier

80 meters Station #1

The antenna is two full size, self supporting (23 meters tall x 8 towers), phased, 4 squares that are spaced 5/8 wavelength apart (broadside to Europe). 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 K3LR designed splitter switch. The operator can select one or two 4 squares in each direction. The radio is a Icom IC-7851 with a Alpha 77DX single 8877 amplifier

**Interlocked with**

80 meters Station #2

M2 with W6ANR element coils - rotating dipole at 74 meters (96 feet long) mounted on the 20 meter tower mast above the top 20 meter Yagi. Can be remotely auto-tuned 3.5 to 3.9 MHz via K6AJ motorized "Tornado" center coil.
The radio is a Icom IC-7800 with a single band, single 8877 amplifier

40 meters Station #1

4L/4L/4L = 12 element stacked array (15 meter booms- each antenna weighs 370 lbs.) full size OWA Yagi’s. One 4L at 80 meters with a K7NV large Prop Pitch rotor, one at 59 meters on a K0XG Ring Rotor and one at 36 meters on a TIC ring rotor. PiRod 24 inch face tower. Switching allows operator choice of TOP only, MIDDLE only, LOWER only, all THREE, Top TWO, Bottom TWO or HIGH and LOW feed. The radio is a Icom IC-7851 with a single band, single 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) mounted on the 20 meter tower. Switching allows operator choice of TOP only, Both In Phase, BOTTOM only or Both Out of Phase. Comtek ground mounted full size 4 square vertical array with 10,000 feet of radials. Receive only.
The radio is a Icom IC-7800 with a single band, single 8877 amplifier

20 meters Station #1

OWA Yagi design 6L/6L/6L/6L = 24 element stacked array (15 meter booms) at 71 meters (K7NV small Prop Pitch), next 52 meters (TIC ring rotor), then 34 meters (TIC ring rotor), then 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 IC-7850 with a single band, single 8877 amplifier

**Interlocked with**

20 meters Station #2

M2 Yagi’s 6L/6L = 12 element stacked array (19 meter booms) at 46 meters (TIC ring rotor) over 31 meters (TIC ring rotor) mounted on the 40 meter tower. Switching allows operator choice of TOP only, Both In Phase, BOTTOM only or Both Out of Phase. Comtek ground mounted full size 4 square with 60 radials per element = 5000 feet (Receive only)
The radio is a Icom IC-7851 with a single band, single 8877 amplifier

15 meters Station #1

OWA Yagi design 7L/7L/7L/7L = 28 element stacked array (15 meter booms) at 50 meters (K7NV small prop pitch), then 37 meters(TIC ring rotor), next at 25 meters(TIC ring rotor) and at 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 IC-7851 with a single band, single 8877 amplifier

**Interlocked with**

15 meters Station #2

M2 Yagi’s 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) mounted on the 20 meter tower. Comtek ground mounted 4 square with 1/4 wavelength verticals receive only. There are 60 wavelength radials per element. The radio is a Icom IC-7800 with a single band, single 8877 amplifier

10 meters Station #1

OWA Yagi design 8L/8L/8L/8L = 32 element stacked array (15 meter booms) at 40 meters (K7NV small prop pitch), then 30 meters (TIC ring rotor), next at 20 meters (TIC ring rotor) and at 10 meters (TIC ring rotor)
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. PiRod tower (18 inch face) The radio is a Icom IC-7851 with a single band, single 8877 amplifier

**Interlocked with**

10 meters Station #2

OWA Yagi design 9L then 7L/7L M2 = 23 element stacked array (19 meter boom) at 85 meters (mounted 180 degrees out from the top 4L 40 – using large K7NV Prop Pitch), then 25 meters with a M2 7 ele Yagi (TIC ring rotor) and M2 7 ele Yagi at 15 meters fixed at 150 deg all mounted on the 40 meter tower. The operator can choose 7 selections. Top, Middle, Bottom, All Three, Top Two, Bottom Two, High/Low. Comtek ground mounted 4 square with 1/4 wavelength verticals receive only. There are 60 wavelength radials per element. The radio is a Icom IC-7800 with a single band, single 8877 amplifier

Low height full size dipoles for 160 and 80 meters at 5 meters high

8 element K7TJR HI-Z receiving array (113 foot diameter circle) with K7TJR active RX elements. Single ground rod per element plus 20 fifteen foot radials. Three ground rods at array center. Used for 160 and 80 meters - RX

5/8 wavelength spaced phased VE3DO loops switchable at 45 and 225 degrees for 160 meters RX

Use DX Engineering Noise Canceling Controller (NCC-1) on 160 meters to combine receive antennas.

Transceivers are six Icom IC-7851’s, one Icom IC-7850 and six Icom IC-7800s (two are spares) all running latest firmware/software loads. W3NQN bandpass filters for TX/RX and W2PV RX. Harmonic suppression coax stubs.

Amplifiers are Single band homebrew single 8877 tube - PI-L network running 1500 watts output. Spare amplifiers are two Ameritron AL-1500s.

Headsets are Bose QC-15 with Heil HC5 boom microphones mounted per K1DG design

Contest software is latest WinTest version 4 on 13 dedicated Pentium Windows XP computers custom built and maintained by Dave, W9ZRX

Wattmeters are Drake W4

Network is 100 MB wired Ethernet

CW Skimmer with seven Perseus SDR receivers (one is a spare) with 6 dedicated computers.

Coffee brewing system - Flavia S350 and S400. 30 selections of Coffee and Tea available for the K3LR team.

CW Keys are Bencher

Contest club - North Coast Contesters – Charter member and current and multi year President

Also a member in good standing of The Mercer County Amateur Radio Club (charter member and current multi year President), Mad River Radio Club (past President), Executive Vice President of The Radio Club of America, Allegheny Valley Radio Club, The Oklahoma DX Association, The CQ WorldWide Contest Committee and The Radio Society of Great Britain.

Life Member of the American Radio Relay League and the ARRL Diamond Club – Maxim Society Member. I am Section Manager of Western Pennsylvania.

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

K3LR Logs and instant QSLs via ARRL LoTW, Club Log and eQSL

QSL info - Direct OK (no SASE needed), Via the Bureau, eQSL, Club Log or ARRL LoTW

K3LR DX Cluster (built and maintained by Dave, W9ZRX) runs AB5K AR Cluster software supporting connections all over the world via telnet://dx.k3lr.com. WebCluster is http://dx.k3lr.com


K3LR Web page is http://www.k3lr.com thanks to Tom, K8CX

Email to
k3lr@k3lr.com

Comments: Hope we hear you on the air in the next contest!

Updated 06/01/2015