COMPACtenna SCAN-III HI Performance SCANNER RADIO Antenna (MURS/ GMRS/ FRS)

Description

Compact High Performance SCANNER RADIO Antenna  100-1500MHz (9" tall)
Particularly superb on 3 Wide Frequency Bands:
1.) VHF 136 - 174 MHz
2.) UHF 378 - 512 MHz
3.) 750 - 960 MHz
Digital & Analog – Including Public Service-Safety/Govt Frequency Bands
Also exceptional for Transmit/Receive on MURS (151-155 MHz) and GMRS (462-467 MHz)
as well as Ham Radio 2 Meter/440 MHz Bands; VSWR nominal <2:1 on these frequency bands
Best (V)SWR’s on VHF frequencies are generally seen when mounting at upper corners of a vehicle.
Signal pattern is substantially omnidirectional at corner locations.
(V)SWR’s can vary with size and shape of vehicle and accessories.
(V)SWR’s seen by the radio are often lower due to coaxial/feed-line attenuation.
Always check SWR; operate only per transmitter/amplifier specifications.
Antenna is constructed in a fashion that will allow 100 W on VHF, 75 W on UHF; vehicle & base station operation
Maximum Duty Cycle at max. power rating: Maximum total transmit time of 1 minute in any 2 minute period.
As a receiving antenna, model SCAN-III performs excellently at non-corners such as roof center as well at corners.
Also excellent for Base Station / Repeater use particularly with installations below 100-150’ above ground / HAAT
where Non-Line-of-Sight NLOS propagation is more substantial.
For Repeater operation: 30 Watts maximum at the antenna (e.g., 45 watt transmitter with 2 dB feedline loss), all  Frequency Bands
Maximum Ambient temperature rating 130 degrees Fahrenheit.
Hotter conditions such as higher ambient temperature, sun exposure, lesser air flow, etc. decrease duty cycle.
Antenna Type: Unique Electric/Magnetic Field Diversity Science & Technology Patented Design Patent No. US 9,407,001
With a special design construct of spiraled and cylindrical metal sheeting including ‘extended flat monofilar spiral Tesla-like coils’,
all resistance, inductance and capacitance (matching) is efficiently done by the physical metallic geometric form of the antenna itself,
as opposed to internal or external (lossy) components of other designs.
“Magnetic Field Resonator”: This built-in resonating matching system is an effectual component of the electromagnetic field production,
resulting in better performance than expected for such a small antenna.
And resulting diverse effective electromagnetic fields further enhance performance in our world of (dynamic) obstructions,
mitigating signal drops, reducing flutter, and increasing reliable range.
Reliable leaf spring style NMO connector on antenna for standard center-stud style NMO mounts
Gain: Nominal 3(+) dBi
[Due to properties listed above, performance is greater than predicted based on gain alone in NLOS
(Non-Line- Of-Sight) environments which is the world we live in.]
Base Station antenna
The SCAN-III may also be used as a high performance 100-1500 MHz compact base station Scanner Radio antenna
by utilizing the COMPACtenna CompacCounterpoise, a heavy duty optimized RF pattern ground plane counterpoise.
This pairing also provides exceptional transmit & receive on MURS, 2 meters, GMRS, and the 440 band with SWR’s nominal <2:1.
**COMPACtenna CompacCounterpoise will be listed on our sight as soon as available through COMPACtenna.
Each Antenna quality tested
Use Lube provided for NMO threads and gasket, tighten securely; do not use on center contacts.
Global shipping handled through Ebay Global Shipping Program.
Antenna ships within 5 business days.
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