2 meter / 220
8 links
- TX Four Square Antenna
- A 220-ft tower that has five catenary lines, each about 500 feet long. Four of these lines, running NE, SE, SW, and NW support four 1/4-wavelength wire verticals used in a 160-meter four-square antenna.
[ Hits: 787 | Votes: 0 | Rating: 0 ]
- 3 band J-Pole Antenna
- Pictures of a 2 meter, 220, 440 copper J-Pole antennas
[ Hits: 2607 | Votes: 12 | Rating: 6.08 ]
- W6LVP Loop Antennas
- Magnetic loop receive antennas manufacturer. W6LVP loops cover 2200 through 10 meters (135 kHz through 30 MHz) with no tuning or adjustment.
[ Hits: 144 | Votes: 1 | Rating: 4 ]
- Low Frequency Transmission Modes
- Article by W1TAG on operating modes used on low-banding.
The 2200 meter band (135.7 - 137.8 kHz) is only 2.1 kHz wide, so voice work on SSB or AM is out. Find out the best modes on LF
[ Hits: 437 | Votes: 0 | Rating: 0 ]
- Propagation on 630 Meters and 2200 Meters
- This is a theoretical look at propagation on 630-Meters and 2200-Meters using ray tracing software. It expands on the brief discussion in the ARRL Handbooks.
The Earth's magnetic field affects 630-Meter and 2200-Meter band propagation. Lower ionization reduces absorption, aiding low-frequency propagation. Differences exist between bands, limited daytime sky-wave propagation. Sunrise/sunset show promise, yet mechanisms are unclear. Ducting possible at night in specific conditions. Negative ions enhance propagation. Inefficient antennas and high man-made noise are anticipated. Groundwave propagation is significant on 2200-Meters.
[ Hits: 36 | Votes: 1 | Rating: 10 ]
- Heathkit SB-220 Meter Repair
- Repairt a Heathkit SB-220 Linear Amplifier with a bad Plate Voltage meter
[ Hits: 998 | Votes: 1 | Rating: 10 ]
- Icom IC-2300H Review
- ICOM IC-2300H 2 Meter FM Transceiver
A worthy successor to the IC-2200H, a popular high power 2 meter mobile rig QST review
[ Hits: 444 | Votes: 1 | Rating: 10 ]
- 2N2/20 CW Transceiver
- 2N2/20 - A 20 Meter, Discrete Component CW Transceiver Built Manhattan-style
[ Hits: 363 | Votes: 0 | Rating: 0 ]
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