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2M HO-LOOP
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SPECIFICATIONS
| Model |
144-144.5 MHz |
| Frequency range |
4 dBd @ 10° |
| Gain, Typical @ 10 ft. |
4 dBd @ 10° |
| Gain, 2 Stk. @ 82 & 132 |
8 dBd @ 9° |
| Polarity |
Horizontal Omni. |
| Impedance |
50 ohms, unbal. |
| Power Handling |
800W, stack: 1.5kW |
| Feed Connector |
SO-239 or "N" (stack) |
| Mounting |
3/8-24 (std. mobile hdwe.) |
| Vehicle Mounting Ht. |
18" or more
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| Stacking Separation |
36" TO 50"
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| Wind Area |
0.025 sq. ft.
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| Weight / ShipWt. |
14 oz. (UPS & MAIL OK)
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FEATURES
For quick and easy communications up to 200 miles or more, the new 2M HO
LOOP provides an omnidirectional, HORIZONTALLY polarized signal ideal
for mobile and base operations on sideband and CW. Horizontal polarity
permits a single HO loop to pick up 4+dB of ground gain that verticals
can't. As with most horizontally polarized antennas, performance
improves dramatically with height above ground. By stacking two HO
LOOPS, another big gain jump occurs (see pattern and note great
reduction of high angle lobes). HO LOOPS do not need a counterpoise, so
mounting options are simplified. Mounting 18" high, in the middle
of a vehicle roof produces 2 dBd gain in a ball pattern upward for LEO
satellite and modest terrestrial operation.
Physically, the 2M HO LOOP is a 11.25" square loop, fabricated from
two 3/8" dia. aluminum tubes to minimize losses. The sealed feed
block provides weather protection with minimum wind drag. The heart of
this unique design is the shorted stub matching to a 50 ohm coax
feedline. Mounting is via a single 3/8" hole (standard mobile
mounting hardware size).
For more performance, try the HO LOOP-STACK PACKAGE: 2 HO LOOPS, phasing
lines, "T" junction block, upper and lower 1/2 " and
5/8" mast sections. For easy base-station installation use the
optinal wall / mast mounting bracket and U-bolts. For a powerful mobile
signal, stack and array of HO LOOPs on our optional "BIG
FOOT", mag-mount ( shown above). Use the optional 5" magnet
and 18" mast for single band mobile operation.
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