 The Hi-Q-6/2-30 MC-4 HF Mobile
Communication Remotelly Tunable Antenna:
Specifically Developed for the USMC for On the Move HF Communication.
Most important features:
- Does NOT require an antenna coupler or any other tuning device!
- Antenna has only ONE Moving part!
- Remotelly Tunable 12-24 VDC at appx. 500 ma current draw.
- It has the highest RE (Radiation Efficiency) compared to ANY SHORT HF Mobile antenna designed to date!
- Currently manufactured versions are DC motor tuned and does not support the fast tuning for ALE. Prototype of the STEPPER motor tuned is in BETA test, it has FAST tuning response and capable to do ALE with the Motorola Micom Radio. The interface to the Harris radio is not solved yet since we cannot get Harris support! We still expect to have an interface unit from the antenna to the PRC-150 w/o Harris support to do ALE.
- Compact and rugged, maximum height can be as short as 7 feet, utilizing a CapHat or an Re-Entrant Coaxial Caphat, Still remotelly tunable from 2-30 MHz! For Fixed station use it can accept up to 36 feet fiberglass whip for greater RE.
- High RF power handling: 1.5 kW or greater if SSB mode used.
- Narrow, filter-like bandwidth.
- Other possible side benefit is now being evaluated, as it is a VERY BROAD BAND antenna in the MONOPOLE configuration, above the HF band, to high as 3 GHz!
- Exceptional performance when set up as an NVIS fixed station antenna.
Mechanical details:
| Antenna height, no whip |
3 feet |
| Antenna with whip |
11 |
| Antenna height with CapHat |
7 |
| Lower mast, 6061 T6 alum. |
2 |
| Lower Mast diameter, all black type III. anodized |
2.5 |
| Rigidized Spring Mounts sliding Tenon. |
| Loading coil diameter |
5.5 |
| Antenna weight |
12 lbs |
- Lower mast has direct fit to the style 4245-1
- Special Hi-Impact Modified Polycarbonate, Black.
- Folding adapter allows up to 90 degree folding of the whip to achieve NVIS Configuration.
- Whip has a fast removal QD
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Electrical details:
- Remotelly tunable WITHOUT an antenna coupler from 2.0 MHz to 30 MHz.
- DC motor tuning time from 2-30 MHz is < 30 sec.
- Stepper motor tuning time from 2-30 MHz is < 4 second
- Stepper motor tuning time from 2-30 MHz in 1 MHz steps is < 1 second
- VSWR over the 2-30 MHz range is < 2.5:1
- Usable bandwidth without retuning and maintaining < 2.5:1 @
|
| 2.0 MHz |
20 kc |
5.0 MHz |
70 kc |
8.0 MHz |
150 kc |
12 MHz |
400 kc |
16 MHz |
1 MHz |
20-30 MHz |
> 5 MHz |
Antenna modeling data: The Performance.
Assumed vehicle installation is the HMMV
- Frequency: 2.0 MHz
-
| Electrical length |
9 degrees |
| Degree Amp. area: |
5.7 |
| Est. ground loss: |
5.2 Ohms |
| Overall antenna "Q" |
92 |
| Loading coil "Q" |
500 |
| RE, (Radiation Efficiency): |
2.4% |
| Rel. Radiated Power: |
-16.2 dB |
| Loss Resistance: |
8.3 Ohms |
- Frequency: 5.0 MHz
-
| Electrical Length |
28 degree |
| Degree Amp. Area |
14.7 |
| Est. ground loss |
3.3 Ohms |
| Overall antenna "Q" |
62 |
| Loading coil "Q" |
580 |
| RE |
28% |
| Rel. Radiated power |
5.5% |
| Loss Resistance |
2.5 Ohms |
- Frequency: 10.0 MHz
-
| Electrical length |
50 degrees |
| Degree Amp. Area |
26.1 |
| Est. ground loss |
2.3 Ohms |
| Overall antenna "Q" |
28 |
| Loading coil "Q" |
540 |
| RE |
67% |
| Rel. Radiated Power |
-1.7 dB |
| Loss Resistance |
1.2 Ohms |
- Frequency: 15.0 MHz
-
| Electrical length |
75 degrees |
| Degree Amp. Area |
31.4 |
| Est. ground loss |
1.9 Ohms |
| Overall antenna "Q" |
20 |
| Loading coil "Q" |
340 |
| RE |
80 % |
| Rel. Radiated Power |
-1.0 dB |
| Loss resistance |
. 6 Ohms |
Note: Above 20 MHz, the antenna is very broad banded and the usable BW is well within the VSRW tolerance of the HF transceiver.
Please state your requirement for HF communication, we will develop and deliver in very short time to your specification.
We only need to know: Max height and diameter of the antenna and its installation for fixed or vehicular use.
Please Contact Us.
Other Hi-Q- Installations and HF antenna developments:
- Hi-Q-4/2-30 HF Submarine antenna for the HMS GOTLAND
- Hi-Q6/2-30 Extreame Shot antenna for the Virginia Class US Submarine
- Hi-Q Emergency HF antenna for Thyssen KRUPP Marine Systems
- Hi-Q-5/2-30 RT-S for the Stiletto Composite boat.
- Hi-Q-4/3-30 for the USAF
- Hi-Q-5/2-30 for the US Army, CEDREC
- Hi-Q NVIS antenna for the Italian MOD
- Hi-Q-5//2-30 for the Turkish Military
- Hi-Q-NVIS antennas for the Homeland Security
- Hi-Q-Antenna for HF Radar, UCSD Oceanography
| Additional Photos (Click to Enlarge) |
The Hi-Q MC-4 with the EB-8 CapHat, full height is: 7 |
The Hi-Q MC-4 antenna only, <3 tall. |
The Hi-Q MC-4 fixed stn. NVIS position. |
The Hi-Q DC Controller for the MC-4 |
The Hi-Q-NVIS/Combi antenna. |
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Plot of the Hi-Q NVIS antenna. |
Plot 2. Hi-Q- antenna at 2.0 MHZ. |
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Hi-Q-5/2-30 RT-M
Tuning range with 44" whip is: 2.2 to 32 MHz
Antenna height is ONLY 84" |
Hi-Q-5/2-30 RT-M
It has the CapHat and the whip
Max height is: 96"
Tuning range is 1.8 to 30 Mhz
This is the HF antenna for the US marines in the companion of the Submarine HF antenna for the Virginia Class. |
Hi-Q-5/2-30 RT-M
Antenna has ONLY the CapHat, tuning range is: 2.2 MHz to 32 MHz
Antenna height is ONLY 52" |
Hi-Q-5/2-30 HF-M antenna with the CapHat and the whip. Total antenna height is: appx. 84". In this config. the tuning range is from appx. 1.8 MHz to 30 MHz |
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