Hi-Q Piranha -4/160


PIRANHA Antenna Specifications.



The NEWLY developed PIRANHA series of Hi-Q Antennas are the derivative of the Military On the Move HF mobile and fixed station antennas.

Major improvements:
                Hi-Impact Modified Polycarbonate coil housing

                Silver Plated # 12 propriety coil wire
                NEW disc with Silver Plated BRASS balls for precision tuning.
                Lower mast is 2’ long Stainless Steel, or the "R" Version is 2 
                foot long with a  2 inch diameter black aluminum mast.

                Silver Plated WQD is installed at no extra cost.
                Mounting hrdw. Included.

Remotely Tunable 6 thru 160 meters

This is the LATEST innovation in HF mobile antennas!

The Hi-Q-4/160 will cover the 10-160 M bands (i.e.: 1.8 MHz to 30 MHz.) It is the PATENTED version of the standard Hi-Q Series of HF mobile antennas. Similar in size as the Hi-Q-4/80, that is: 4" diameter loading coil by 10 " long (8" usable coil).

Mechanical details:

Base Length: 2' x 1.5"
Coil Size: 4" x 10 " Polycarbonte (Lexan) tubing,
8" of coil is usable/tunable
Whip requirement: 160m: use 102' whip (not supplied) and
a CapHat with 32" lobes (supplied in Package B).
Will resonate at 1820 Kc.
80-40-20-17m: same as 160m
6-10-12m: use short 36" whip or CapHat only
Weight: 5 lbs
Tuning Method : MT: Knob at the base, sliding up/down.
  • Hi-Q DC Controller or similar controller. ALL Hi-Q-Antennas now have a magnet to count rotations of the motor-output shaft. So, by adding an optional reed switch externally, you get a "pulse per revolution" for the Hi-Q DC Controller or similar controller.
  • You may use a simple DPDT switch to tune the antenna.

Electrical details: (mid-mounted on standard auto)

Freq: 1.8 MHz
Base length: 2'
Base diameter: 1.5"
CapHat: 32 inch lobes
Radiation resistance: .2 ohms
Electrical length: 8 degrees
Degree-amp: 4.8
Estimated ground loss: 6 ohms
Overall antenna: "Q" 83
Top, whip: 102"
Shunt: 2300 pF for L match to 52 ohms
Power handling: SSB legal limit

Coil data:

Inductance: 350 uH
Reactance: 3140 ohms
Wire size: 12 AWG
Coil diameter: 5"
Coil length: 10" (8" usable)
Pitch: 11
Coil "Q" 580
Loss resistance: 16 ohms
100 w I (rf): 2.1 amps


1.8 Mhz
Radiation Efficiency: 1.3% **
Relative radiated power: -19.2 dB
Feed point impedance: 22 ohms
Bandwidth for 2:1 VSWR 19 kHz
3.750 Mhz
Radiation Efficiency: 8%
Relative radiated power: -9.2 dB
Bandwidth for 2:1 VSWR 35 kHz
Coil "Q" 450
7.2 Mhz
Radiation Efficiency: 43%
Relative radiated power: -3.7 dB
Bandwidth for 2:1 VSWR 120 kHz
14.2 Mhz
Radiation Efficiency: 77%
Relative radiated power: -1.1 dB
Bandwidth for 2:1 VSWR 475 kHz

Excellent performance on the rest of the higher bands!

** NOTE: If this was a BRAND "X" screwdriver antenna it would have a Radiation efficiency of Less than 1/10th watt (that is right, one tenth of a watt out of your 100 w. radio)... a real QRP set up. And, yes, QRP rigs get out, but with the Hi-Q Series antennas you WORK THE WORLD! 

Charlie Gyenes, W6HIQ, HA5CMG and VA7HIQ

QTY Description Price US Shipping
 Hi-Q Piranha -4/160 Antenna $550.00  $ 49.00  
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or Personal check
*No Credit Cards Accepted*

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Hi-Q Piranha -4

Pictured in order from left to right:
Hi-Q Piranha -4, -5, -6

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