Price: $4,255.00
Model:
S-4EL
Manufacturer:
SteppIR
SteppIR 4 Element Yagi
The 4 Element is one of our original Steppir antennas using our proven technology to give continuous frequency coverage from 13.9 to 54 Mhz. The 4 element has set the standard for performance in HF antennas and with the addition of an optional 40/30M rotatable Dipole you will have unmatchable single antenna performance. This antenna comes with the SDA100 controller.
ITEMS
Image (click for detail) |
Part Number |
Description |
Price |
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00204 | 4E Yagi 20m-6m: 4E Yagi antenna, 4 x 36 ft elements, 32 ft boom, 99 lb, 13.9Mhz – 54Mhz continuous frequency coverage; includes basic SDA100 electronic controller, 24v power supply, and DB25 dsub Field Splice | $4255.00 |
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09128 | SDA100 Controller: Standard for all antenna models; Basic controller includes: 180 degree mode, bi-directional mode, auto-retract, manual band change, manual adjustment of elements. | $0.00 |
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03650 | DB25 dsub Field Splice: The db25 field splice is used to connect the control cable to the SDA 100 electronic controller. The field splice consists of 3 terminal headers that are mounted to a PCB board, which is in turn connected to a male DB25 connector. The control cable is connected to the splice using the included wiring diagram. Having the field splice allows for exact lengths of control cable, with lengths available to the nearest foot. In addition, if the cable is being run into a conduit, it eliminates the need to cut off the connector. | $0.00 |
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24v Power Supply: For control cable lengths up to 65m.(If cable length is in excess of 65m, you will need the 33v Power Supply Upgrade listed under the "Options" tab.) | $0.00 |
Specifications
Specification |
4E |
4E with 30/40m element |
| Boom Length |
32 ft / 9.75 m |
32 ft / 9.75 m |
| Boom |
1.75 in – 2.50 in 4.45 cm - 6.35 cm |
1.75 in – 2.50 in 4.45 cm – 6.35 cm |
| Longest Element |
36 ft / 10.97 m |
39 ft / 11.9 m |
| Turning Radius |
24.1 ft / 7.35 m |
24.1 ft / 7.35 m |
| Weight |
99 lb / 45.0 kg |
106 lb / 48.2 kg |
| Mast clamps (included) |
2.0 in / 4.45 cm |
2.0 in / 4.45 cm |
| Wind Load |
9.7 sq ft / 0.9 sq m |
11.7 sq ft / 1.09 sq m |
| Wind rating |
100 MPH (EIA-222-C) |
100 MPH (EIA-222-C) |
| Adjustable elements |
4 |
4 |
| Power Rating |
3 KW |
3 KW |
| Feed points |
1 |
1 |
| Frequency coverage |
13.8 – 54 MHz |
6.8 – 54 MHz |
| Tuning Rate |
1.3 ft per second |
1.3 ft per second |
| Control Cable |
16 wire 22 AWG shielded |
16 wire 22 AWG shielded |
Performance for Ham Bands |
4E Gain DBi |
4E Front to Rear, DB |
30/40 Option gain, DBi |
30/40 option Front to Rear, DB |
| 40M |
n/a |
n/a |
1.8 |
n/a |
| 30M |
n/a |
n/a |
2.1 |
n/a |
| 20M |
9.5 |
21 |
||
| 17M |
10 |
20 |
||
| 15M |
10.2 |
27 |
||
| 12M |
10.4 |
21 |
||
| 10M |
10.6 |
11 |
||
| 6M – 4 elements |
7.8 |
4 |
||
| 6M – with optional passive elements 50.0 – 53.3 MHz |
13 |
30 |
Options
Image (click for detail) |
Part Number |
Description |
Price |
stock photo |
03222 | OPTIONAL Control Cable: 12 wire 22 AWG shielded control cable, outdoor rated, NON-buriable. Available in 1m increments. Lengths over 65m require the 33v power supply or the remote driver board option. | $5.95 |
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01321 | OPTIONAL Transceiver Interface for SDA100 controller: Automatically adjusts each element of the antenna as the radio tunes. Requires a transceiver interface cable. | $155.00 |
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01322 | OPTIONAL Tuning Relay for SDA100 controller: Lock-out relay connects via PTT cable to RF power source and prevents the amplfier from transmitting while the SteppIR antenna is being tuned. Helps prevent potential mismatch issues that could damage the antenna. | $155.00 |
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09130 | OPTIONAL Advanced Lightning Protection (ALP) Module for SDA 100 electronic controller: Each driver chip has a relay in front of it that protects against lightning, nearby lightning incident and dead shorts. Module will only work if the antenna is not in the process of adjusting when the event occurs. | $255.00 |
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09132 | OPTIONAL Remote Driver Board for SDA 100 electronic controller: The remote driver board is mounted near the tower base. 12 conductor control cable is run from antenna to the remote driver board, and then CAT5e cable can be used to connect from remote driver board to hamshack, up to 2000 feet away. Requires a power source. Advanced lightning protection (ALP) module is included with this option. Remote driver board comes with an aluminum mounting plate but does not come with an enclosure. | $380.00 |
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01411 | OPTIONAL 40/30 Loop Element: The 40/30 loop upgrade option (at purchase) replaces the driven element on the standard 20m-6m Yagi antenna with a loop dipole for 40m and 30m operation. When the dipole is on these bands, the other elements retract so that there are no interaction issues. The 40/30m dipole option adds only 7 lb to the weight, 2 sq ft to the wind load and 1.8 ft to the turning radius. The loop element design makes the overall length for this element 39 feet, 40% shorter than the 70 ft length a full sized dipole would require, with only a 0.4dB drop in gain peformance! | $675.00 |
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01602 | OPTIONAL Element Truss Kit: Element trusses for loop element. Because the loop elements droop lower than the non-loop elements, this option allows a more uniform appearance of all the elements. Does not improve wind or ice load limits. For appearance only. | $210.00 |
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06004 | OPTIONAL 6m Passive Element Kit: The standard antenna has 6m capability but the spacing is not optimal, so performance akin to a high gain dipole - 7.8 dBi gain but only 4dB front-to-rear. Adding the 6m passive element kit gives you 6 nicely spaced elements with gain of 13.0 dBi and front-to-rear of 30dB. Because this is a fixed element, the performance effect is only good from 50.0MHz to 50.300MHz. A must for anyone using 6m or with a desire to experiment! | $315.00 |
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06116 | OPTIONAL Voltage Suppressor: Line filter (16 conductor) for filtering ESD and other unwanted voltages from the Control cable. Made by Array Solutions. A better option would be the 09130 Advanced Lightning Protection (ALP) module, which internally protects the SDA 100 controller by relaying out the driver chips in case of a lightning strike, near incident event or a dead short. | $215.00 |
stock photo |
01502 | OPTIONAL Connector Junction Box: Replaces the standard cylindrical plastic housing; The standard antenna comes with a cylindrical plastic housing (affectionately referred to by many as the “pipe bomb”, due to its looks) with plastic caps on each end. The control cable wires are connected to terminal strips, which are then placed into the plastic housing. The connector junction box is a hinged enclosure that has female terminal headers mounted inside. The control cable and EHU cables are then connected to a male terminal plug, creating a pluggable/unpluggable connection for the antenna wiring. The connector junction box also includes a 25 pin female dsub mounted inside, for testing the antenna at the point of installation. Highly recommended! | $295.00 |
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RETROFIT |
00711 | OPTIONAL 40/30 Dipole Retrofit: This option is available for antenna owners that already have purchased a 20m-6m Yagi but would like to replace the 20m driven element with the 40/30 loop. The cost is more than it would be to upgrade at time of purchase because it is an entirely new element replacing the existing 20m driven. Many people convert their left over 20m driven into a dipole or keep the EHU as a spare. | TBA |
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OPTIONAL Transceiver Interface Cable - Kenwood: Connects your transceiver to the SDA 100 controller for automatic adjustment of antenna when you change frequencies (requires 01321 transceiver interface). Kenwood takes either the S15 or S18 cable. | $45.00 | |
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OPTIONAL Transceiver Interface Cable - Yaesu: Connects your transceiver to the SDA 100 controller for automatic adjustment of antenna when you change frequencies (requires 01321 transceiver interface). Yaesu uses either the S12, S13, S18 or S19 cable. | $45.00 | |
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OPTIONAL Transceiver Interface Cable - Icom: Connects your transceiver to the SDA 100 controller for automatic adjustment of antenna when you change frequencies (requires 01321 transceiver interface). ALL cables are the same for Icom. | $45.00 | |
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OPTIONAL Transceiver Interface Cable - OTHER MODELS: Connects your transceiver to the SDA 100 controller for automatic adjustment of antenna when you change frequencies (requires 01321 transceiver interface). Cable types for these radios vary. | $45.00 | |
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02114 | OPTIONAL Y Connector for SDA 100 Transceiver Interface: ''Y'' cable is used to connect a computer logging program, transceiver and the SDA 100 to one singular communication port; the Y cable is not necessary with Icom radios. | $65.00 |