Eyring Low Profile Antenna 301A (ELPA 301A)

p/n: 200-4467
© Brooke Clarke 2013

Eyring Low Profile
          Antenna 301A (ELPA 301A)
Background
Description
Patents
Related
Links

Background

As part of my interest in HF antennas, and Near Vertical Incidence Sky-wave (NVIS) propagation in particular I got one of these when it became available.  This is a wire antenna which is a common way to make HF antennas, but not the only method.

This particular antenna was made for Tadiran in Israel (Wiki) and I received it from Israel in the factory box, so it's a New In Box (NIB) product.
It was packed on June 18, 1992 and shipped the next day.

The key selling point is that the antenna can be erected where it's very close to (or in some cases buried in) the ground.
This antenna can be used in the military VHF low band (30 to 90 MHz) in a way similar to the OE-303, i.e. as a very directional (high gain) antenna.

Eyering is no longer in business, they were FSCM 53730.

Description

Photographs

Click on photo for larger version.  If your cursor is a (+) click again for even larger image.

Fig 1 NIB 15" x 7" x 5" as Received
Eyring Low
                  Profile Antenna 301A (ELPA 301A)
Fig 2 Carry bag & Packing List
Eyring Low
                  Profile Antenna 301A (ELPA 301A)
Fig 4 Instructions Front
Eyring Low
                  Profile Antenna 301A (ELPA 301A)
Fig 5 Instructions Back
Eyring Low
                  Profile Antenna 301A (ELPA 301A)
Fig 6 Feed (Matching Network)
& 2 ea antenna reels
Eyring Low
                  Profile Antenna 301A (ELPA 301A)

Major Components

Description
Qty
p/n
Element Feed Unit
Matching Unit
Fig 7
Eyring Low
                  Profile Antenna 301A (ELPA 301A)
1
200-4032-01
Antenna Reel Assy
Fig 9
Eyring Low
                  Profile Antenna 301A (ELPA 301A)

2
200-4033-01
Stakes, tri-fold
Fig 14
Eyring Low
                  Profile Antenna 301A (ELPA 301A)
12
200-4508
Slide Hammer
Fig 11
Eyring Low
                  Profile Antenna 301A (ELPA 301A)
1
200-3930
Stake Extractor
Fig 12
Eyring Low
                  Profile Antenna 301A (ELPA 301A)
1
200-3939
Cable, Coax 10 Meter
Fig 13
Eyring Low
                  Profile Antenna 301A (ELPA 301A)
1
200-4027-16
Bag, 301 Kit
1
200-4509
Packing List
1

Instruction Card
1


Patents


On the carry bag is patent number 4750001.


4743917 Apparatus and method for a portable roll-out antenna, May 10, 1988, Brian L. Grose, Craig M. Huntsman (Eyring Research Institute, Inc.), 343/877, 242/388.6
4750001 Portable roll-out antenna system and method, Jun 7, 1988, Brian L. Grose, Craig M. Huntsman (Eyring Research Institute, Inc.), 343/877
4829310 Wireless communication system using current formed underground vertical plane polarized antennas, May 9, 1989, Ferril A. Losee, (Eyring Research Institute, Inc.), 43/719, 343/847 - virtural underground loop antenna
4839661 Guided wave antenna system and method, Jun 13, 1989, Ferril A. Losee, (Eyring Research Institute, Inc.), 43/719, 343/847
Using the antenna when buried underground.
4825224 Broad band impedance matching system and method for low-profile antennas, Apr 25, 1989, Brian L. Grose, Orval N. Skousen
(Eyring Research Institute, Inc.), 43/860, 343/822 -

Related

Antennas
Propagation
AS-2259 - NVIS antenna
AT-984/G - Reel of wire intended for VHF half Rombic antenna
B&W Broadband Folded Dipole Antennas - T2FD type
SORAK - Kit that makes a number of antennas (both HF and VHF low band)
GRA-4 - Two mast kit, no antenna
GRA-12 - Three mast kit, no antenna
GRA-50 - Variable Dipole Kit with no masts
OE-303 1/2 Rhombic VHF Low Band Antenna

Links

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