Digital Modes Meanderings
The Antenna System Operating Specifications
ANTENNA
TYPE: vertical doublet
POLARIZATION: vertical
RADIATION PATTERN: omni-directional
RADIATING ELEMENT LENGTH: 37 feet
RADIATING ELEMENT DIAMETER: 1.25 inches
RADIATING ELEMENT MATERIAL: aluminum
POWER HANDLING CAPABILITY: 600+ watts
TYPE OF FEED POINT: center feed
FEED POINT IMPEDANCE: variable throughout operating range
USABLE BANDWIDTH: 40M to 10M inclusive
RADIATION EFFICIENCY: 40M = 95%
30M = 98%
20M = 99%
17M = 99%
15M = 99%
12M = 99%
10M = 99%
MAXIMUM RADIATION ANGLE (MODELED): 40M = 25 degrees
30M = 20 degrees
20M = 20 degrees
17M = 15 degrees
15M = 15 degrees
12M = 10 degrees
10M = 10 degrees
FEED LINE
TYPE: open wire line (OWL)
IMPEDANCE: 580 ohms
VELOCITY FACTOR: .92 minimum
MATCHED LINE LOSS: .104 dB per 100 feet at 28 MHz
WIRE SIZE / MATERIAL: 14 gauge stranded copper
WIRE SPREADER SPACING: 3.75 inches
WIRE SPREADER MATERIAL: UV resistant delrin
WIRE SPREADER SEPARATION: 18 inches nominal
POWER HANDLING CAPABILITY: 600+ watts
BALUN
TYPE: current
RATIO: 1:1
USABLE BANDWIDTH: 160M to 10M
POWER HANDLING CAPABILITY: 5 KW (CW) / 10 KW (SSB)
ANTENNA TUNER
TYPE: Unbalanced “ T ” (C-L-C)
USABLE BANDWIDTH: 160M to 6M
IMPEDANCE RANGE: 20 – 1500 ohms (resistive)
MAXIMUM POWER CAPABILITY: 2 KW
TYPE: vertical doublet
POLARIZATION: vertical
RADIATION PATTERN: omni-directional
RADIATING ELEMENT LENGTH: 37 feet
RADIATING ELEMENT DIAMETER: 1.25 inches
RADIATING ELEMENT MATERIAL: aluminum
POWER HANDLING CAPABILITY: 600+ watts
TYPE OF FEED POINT: center feed
FEED POINT IMPEDANCE: variable throughout operating range
USABLE BANDWIDTH: 40M to 10M inclusive
RADIATION EFFICIENCY: 40M = 95%
30M = 98%
20M = 99%
17M = 99%
15M = 99%
12M = 99%
10M = 99%
MAXIMUM RADIATION ANGLE (MODELED): 40M = 25 degrees
30M = 20 degrees
20M = 20 degrees
17M = 15 degrees
15M = 15 degrees
12M = 10 degrees
10M = 10 degrees
FEED LINE
TYPE: open wire line (OWL)
IMPEDANCE: 580 ohms
VELOCITY FACTOR: .92 minimum
MATCHED LINE LOSS: .104 dB per 100 feet at 28 MHz
WIRE SIZE / MATERIAL: 14 gauge stranded copper
WIRE SPREADER SPACING: 3.75 inches
WIRE SPREADER MATERIAL: UV resistant delrin
WIRE SPREADER SEPARATION: 18 inches nominal
POWER HANDLING CAPABILITY: 600+ watts
BALUN
TYPE: current
RATIO: 1:1
USABLE BANDWIDTH: 160M to 10M
POWER HANDLING CAPABILITY: 5 KW (CW) / 10 KW (SSB)
ANTENNA TUNER
TYPE: Unbalanced “ T ” (C-L-C)
USABLE BANDWIDTH: 160M to 6M
IMPEDANCE RANGE: 20 – 1500 ohms (resistive)
MAXIMUM POWER CAPABILITY: 2 KW