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VB-215DX by hy-gain
Hy-Gain VB-215DX is an 15-Element High-Performance Yahi antenna for SSB/CW DXing in the Amateur 2 meter band.
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The VB-215DX design is based upon the DL6WU log-tapered design information. Performance was verified by testing on Hy-Gain's antenna range and by computer modeling with the NEC-2 and Yagi Optimizer© computer codes. The antenna's performance characteristics were optimized for the 144-144.5 MHz frequency range. This electrical design also permits the addition of more director elements for additional gain, with little or no retuning.
A 6-section boom can be easily disassembled and reassembled for portable operations. A sturdy tubular boom support is included to reduce boom droop and to add structural strength for severe icing conditions.
Most hardware is stainless-steel including the element retaining rings (push nuts). All insulators are UV protected. The coaxial balun assembly is made from high quality RG-303/u and RG-142 B/u PTFE dielectric and FEP jacketed coaxial cable
The addition of 2 or 3 more directors will not adversely affect the balance or structural integrity of the antenna.
|Frequency Range (usable)||144 MHz to 146 MHz|
|Front-to-Back (all backlobes)||22 dB|
|Maximum Gain||144.2 MHz: 14.2 dBd|
146.0 MHz: 13.9 dBd
|Maximum Power||1000W Avg.|
|Beamwidth||28 degrees (E)|
30 degrees (H)
|Sidelobe Levels||-15 dB (H)|
-17 dB (E)
|Elements Length||878 mm to 1010 mm|
34.57" to 39.76"
|Parasitic Elements Diameter||4.8 mm|
|Boom Length at 4.03 wavelengths||8.5 m|
|Boom Diameter||25 mm to 32 mm|
1" to 1.26"
|Maximum Turning Radius||4.3 m|
|Maximum Mast Size Accepted||38 mm to 52 mm|
1.5" to 2.04"
|Maximum Wind Surface Area||0.256 sqm|
|Boom Support||Tubular 25.4 mm, 22.225 mm|
Tubular 1", 0.875"
|Stacking Distance (for maximum G/T)||E plane: 4.25 m (167")|
H plane: 4.03 m (159")
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