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CHA F-LOOP 3.0 

Page 16 

 

Preventive Maintenance 

Like all our products, the CHA P-LOOP 3.0 is built to be rugged, long lasting and with details in mind. The 
craftsmanship of the system is unique to Chameleon Antenna

TM

.  The materials used in this antenna are 

water and rust resistant and do not require preventive maintenance, but they should be inspected for 
damage and cleaned with mild household cleaners after field use.   

 

 
Specifications 

 

Frequency:  
CHA F-LOOP 3.0 BASIC: Standard Flexible Loop: approximately 4.7 

 29.7 MHz (60 through 10 

meter ham bands), Double Flexible Loop: approximately 2.8 

 11.9 MH (80 through 30 meter 

ham bands),  
CHA F-LOOP 3.0 PLUS: Rigid Radiator Loop: not measured, but guaranteed 5.4 to 29.7 MHz (60 
through 10 meter ham bands). 
CHA F-LOOP 3.0 TOTAL: Flexible Booster Loop: approximately 4.0 - 23.1 MHz (60 through 15 
meter ham bands). 

 

Power: 25W intermittent duty cycle (SSB telephony), 10W continuous duty cycle (CW, AM, FM, 
RTTY, and other digital modes). 

 

Diameter: 34 inches (Standard Loop), 48 inches (Booster Loop), 36 inches (Rigid Loop) 

 

Ingress Protection:  Not water resistant.  Equivalent to IP30 

(not tested).

  

 

RF Connection: UHF Plug (PL-259) 

 

Color: Black and Gray 

 

SWR: Operator tunable, typically not greater than 3.0:1 at resonance. 

 

Table (3) shows typical 2:1 bandwidth for the three antenna configurations.  Note: The 
bandwidth of the Rigid Loop was not measured but should be comparable to the Standard 
configuration.

 

 

BAND 

             2:1 SWR BANDWIDTH (KHZ)* 

STANDARD 

DOUBLE 

BOOSTER 

80 

60 

12 

40 

17 

14 

16 

30 

27 

28 

30 

20 

40 

60 

17 

60 

90 

15 

100 

140 

12 

160 

10 

210 

                  *Bandwidth may vary 

Table 3.  2:1 SWR Bandwidth. 

 

 

Weight:  4 lbs. 

 

Personnel Requirements and Setup Time: one operator, around 2 minutes. 

 

IMPORTANT: Do not use an antenna tuner or coupler with this antenna! 

Summary of Contents for CHA F-LOOP 3.0

Page 1: ...CHA F LOOP 3 0 Page 1 HF Portable Loop Antenna 3 0 CHA F LOOP 3 0 Operator s Manual Nevada USA WWW CHAMELEONANTENNA COM VERSATILE DEPENDABLE STEALTH BUILT TO LAST...

Page 2: ...9 Double Flexible Loop Assembly CHA F LOOP 3 0 BASIC 10 Flexible Booster Loop Assembly CHA F LOOP 3 0 TOTAL 11 Rigid Radiator Loop Assembly CHA F LOOP 3 0 PLUS 12 Power Compensator Installation 13 Lo...

Page 3: ...real practical advantage of the small loop compared to a short vertical whip tuned against earth or a full sized vertical antenna is the loop s freedom from dependence on a ground plane and earth for...

Page 4: ...cause you to mistune the antenna Antennas built by Chameleon AntennaTM are versatile dependable stealthy and built to last Please read this operator s manual so that you may maximize the utility you...

Page 5: ...m Usable Frequency MUF Lowest Usable Frequency LUF and Optimal Working Frequency OWF The MUF is the frequency for which successful communications between two points is predicted on 50 of the days of i...

Page 6: ...NVIS during field testing of the CHA F LOOP 3 0 both DX and NVIS contacts were made on the 30 meter ham band within minutes of each other Parts of the Antenna The CHA F LOOP 3 0 is comprised of the f...

Page 7: ...diameter 146 inch length of shorted coaxial cable with UHF Plugs at both ends and is designed to increase CHA F LOOP 3 0 TOTAL performance in the 60 through 15 meter ham bands f Flexible Radiator Loo...

Page 8: ...del p Rigid Radiator Loop Mounts The Rigid Radiator Loop Mounts are used to attach the Rigid Radiator Loop o to the Tuning Unit a q Telescoping Mast Stud The Telescoping Mast Stud is located on top of...

Page 9: ...following steps to assemble the Standard Single Flexible Loop configuration 1 Select a location to setup the CHA F LOOP 3 0 BASIC antenna The location can be indoors or in an outdoors area protected...

Page 10: ...gle Flexible Loop configuration uses the standard Flexible Radiator Loop Flexible Radiator Loop Extension d and small Coupling Loop included with the CHA F LOOP 3 0 BASIC CHA FLOOP 3 0 PLUS and CHA F...

Page 11: ...he transmitter and observing the SWR meter If used indoors the location should also be reasonably away from switching power supplies Internet routers and other sources of electrical and electronic int...

Page 12: ...the Rigid Radiator Loop Antenna see plate 6 1 Select a location to setup the CHA F LOOP 3 0 PLUS antenna The location can be indoors or in an outdoors area protected from the weather The location must...

Page 13: ...tible antenna mounts available from Chameleon AntennaTM 9 Connect the Coaxial Cable Feedline m to the Loop Connection l 10 Secure the Coaxial Cable Feedline along the Telescoping Mast to ensure easy t...

Page 14: ...antenna configuration Figure 1 Band Switch Label Table 2 shows the more precise frequency range for each antenna configuration and switch setting If the desired operating frequency is in both positio...

Page 15: ...ky straps 5 If used un attach the Rigid Radiator Loop Re install the hardware in the Rigid Radiator Loop flanges so they do not get lost 6 Fully collapse Telescoping Mast 7 Remove Coupling Loop from t...

Page 16: ...ible Booster Loop approximately 4 0 23 1 MHz 60 through 15 meter ham bands Power 25W intermittent duty cycle SSB telephony 10W continuous duty cycle CW AM FM RTTY and other digital modes Diameter 34 i...

Page 17: ...ly any flat surface CHA SPIKE MOUNT The CHA SPIKE MOUNT is an innovative product built exclusively by the skilled machinists at Chameleon AntennaTM It is a precision fabricated heavy duty stainless st...

Page 18: ...Portable Antenna Pioneer References 1 Silver H Ward editor 2013 2014 ARRL Handbook for Radio Communications 91st Edition American Radio Relay League Newington CT 2 1987 Tactical Single Channel Radio...

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