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CHA F-LOOP 

Page 14 

 

 
Chameleon Antenna

TM

  Products  

The following products are available for purchase at Chameleon Antenna

TM

.   

Go to

 

http://chameleonantenna.com

 

for ordering and more information.

 

 

CHA SKYLOOP

 - The CHA SKYLOOP is a 250' full wave 

loop  antenna  cut  for  80M.  With  the  help  of  an 
antenna  tuner,  the  CHA  SKYLOOP  will  cover  all  the 
bands between 80M and 6M. 
 

CHA WINDOM 40

 – The CHA WINDOM 40 Antenna is 

designed for 40, 20, and 10 meters.  Amateur Bands 
from 60 through 10 meters can be operated using an 
antenna  tuner.  Built  with  the  portable  operator  in 
mind,  it  is  very  light  weight,  easy  to  set  up,  and 
comes with a military-style pouch. 
 

CHA  EMCOMM  II

  -  The  CHA  EMCOMM  II  Antenna 

has  been  specially  designed  for  backup  emergency 
HF  system  or  permanent  installation.  The  integral 
broadband  impedance  matching  network  allows 
broadband antenna tuning. 
 

CHA  HYBRID  Vehicular  Base

  -  The  CHA  HYBRID 

Vehicular  Base  is  designed  to  enhance  the 
capabilities  of  the  common  HF  radio  application  by 
allowing faster tuning operation across the HF bands 
including MARS/CAP frequencies. This antenna base 
has  an  integral  broadband  impedance  matching 
network  allowing  broadband  antenna  tuning.  The 
CHA  HYBRID  can  be  used  mobile  with  the  CHA  V1L 
and  V2L  mobile  antennas  or  stationary  with  the 
provided 30' wire. 
 

CHA  V1  Mobile  Antenna

  -  The  CHA  V1  antenna  is 

our  first  and  classic  broadband  HF  mobile  antenna 
that  we  designed.  It  has  been  updated  from 
fiberglass to 7075 alloy and stainless steel. 
 

CHA V1L Mobile Antenna

 - The CHA V1L antenna is a 

rugged  multiband  HF  mobile  antenna  that  can  be 
erected in a minimum of time and space. 
 

CHA V2L Mobile Antenna

 - The CHA V2L is a rugged 

multiband HF antenna designed for smaller vehicles. 

 

CHA  VHF/UHF  Magnetic  Mount  Mobile  Antenna

  - 

The  CHA  VHF/UHF  is  a  simple  but  great  dual  band 
antenna for 2M and 70CM. 
 

CHA Hybrid Mini – Portable HF Antenna Base - 

The 

CHA HYBRID-MINI Base is the portable version of the 
regular HYBRID. The unit can be differentiated by the 
color  of  the  lid  and  the  base  connector,  which  is 
black  instead  of  gray.  The  HYBRID-MINI  is  also 
smaller  and  about  50%  lighter  than  the  regular 
HYBRID.  An  external  antenna  tuner  is  required  to 
provide  a  low  VSWR.  The  connector  provided  with 
the  antenna  is  a  SO-239  sealed.  The  entire  unit  is 
also  waterproof.    The  HYBRID-MINI  will  serve  as 
impedance 

transformer 

matching 

network 

(transformer  5:1)  and  will  greatly  reduce  the  VSWR 
at the load for the following antennas: V1, V1L, V2L 
and MIL. 
 

CHA Hybrid Micro - Portable HF Antenna Base -  

The  CHA  HYBRID-MICRO  is  a  lightweight  highly 
portable  broadband  antenna  system  designed  to 
offer  maximum  portability  and  performance.  The 
antenna  weights  about  1  lb.  The  antenna  will 
operate  at  all  frequencies  in  the  1.8-54  MHz  band 
without any adjustment with most  modern external 
antenna  tuners.  No  masts  or  guying  are  required. 
The  antenna  will  work  successfully  supported  by 
trees, masts, the tops of vehicles or any convenient 
object  or  structure.  The  antenna  works  most 
effectively when elevated at a reasonable height. 
 

CHA  MIL  Whip

  -  The  CHA  MIL  whip  is  a  broadband 

(28  to  54  MHz)  monopole  antenna  designed  for 
portable  or  man-pack  radios  requiring  compact  but 
rugged  antenna  systems.    Its  design  has  been 
borrowed  from  similar  antennas  utilized  by  many 
armies all over the world. The CHA MIL is very hardy, 
sturdy and portable (being collapsible). Un-mounted 

Содержание CHA F-LOOP

Страница 1: ...HF Faraday Loop Antenna CHA F LOOP Operator s Manual California USA WWW CHAMELEONANTENNA COM VERSATILE DEPENDABLE STEALTH BUILT TO LAST ...

Страница 2: ...tect you Stay away from all power lines WARNING Never operate this antenna where people could be subjected to high levels of RF exposure especially above 10 watts or above 14 MHz Never use this antenna near RF sensitive medical devices such as pacemakers WARNING A tuned loop can exhibit several hundred Volts and concentrated electromagnetic radiation when operating at QRP power levels 5 10 W At hi...

Страница 3: ...MHz to 29 7 MHz 60 10 meter ham bands The magnetic loop is different than typical antennas because it emphasizes the magnetic part of the radio wave H field rather than the electric part E field of the radio wave It also has a high Q resonance of around 15 KHz on 60 meters providing immunity from interference outside the bandpass The CHA F LOOP Antenna was designed with weight portability versatil...

Страница 4: ...nd back to Earth between 300 and 2 500 miles depending upon the frequency and ionospheric conditions HF radio waves can then be reflected from the Earth to the ionosphere again during multihop propagation for longer range communication The most important thing for the operator to understand about HF radio wave propagation is the concept of Maximum Usable Frequency MUF Lowest Usable Frequency LUF a...

Страница 5: ...ffective antenna for both local and long distance DX communication While not specifically designed for NVIS during field testing of the CHA F LOOP 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 is comprised of the following components see plates 2 and 4 Plate 2 Standard CHA F LOOP Antenna a Tuning Unit The Tuning Unit a...

Страница 6: ...on g Coaxial Cable Connection The Coaxial Cable Connection is a UHF socket located on the rear of the Tuning Unit a and is used to connect the Coaxial Cable k to the radio It is not used in the High Efficiency CHA F LOOP Antenna configuration h Tuning Knob The Tuning Knob is located on the front of the Tuning Unit a and is used to adjust the resonant frequency of the loop The relative position of ...

Страница 7: ...iator Loop b p High Efficiency Radiator Loop Connections The connections for the optional High Efficiency Radiator Loop b see plate 5 are brackets located on the rear edge of the Tuning Unit a They are not used in the Standard CHA F LOOP configuration q High Efficiency Radiator Loop Joints The High Efficiency Radiator Loop Joints see plate 5 are used to connect together the three sections of the O...

Страница 8: ...nna The location can be indoors or in an outdoors area protected from the weather The location must facilitate accessibility by the operator to the Tuning Knob h The operator needs to be able to adjust the Tuning Knob while listening to the receiver activating the transmitter and observing the SWR meter If used indoors the location should also be reasonably away from switching power supplies Inter...

Страница 9: ... in an outdoors area protected from the weather The location must facilitate accessibility by the operator to the Tuning Knob h The operator needs to be able to adjust the Tuning Knob while listening to the receiver activating the 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 e...

Страница 10: ...n e on the top of the Tuning Unit 8 Place the CHA F LOOP on a table top or attach the Aluminum Base Plate m to a tripod or other antenna mount 9 Connect the Coaxial Cable Assembly l to the Coaxial Cable Connection g on the back of the Tuning Capacitor Box 10 Perform an operational test see procedure below 11 This completes installation of the Optional CHA F LOOP High Efficiency loop configuration ...

Страница 11: ...on f 2 Connect the free end of the Flexible Radiator Loop to the Loop Extension Barrel Connector t 3 Connect one end of the Flexible Radiator Loop Extension s to the open Flexible Radiator Loop Connection from step 1 4 Form the Flexible Radiator Loop Extension into a loop like the Flexible Radiator Loop 5 Attach the top of the Flexible Radiator Loop Extension to the Faraday Loop c using a Faraday ...

Страница 12: ...nna Directivity 5 Transmit a carrier and gradually turn the Tuning Knob counterclockwise and then clockwise around the highest receive signal point found in step 3 to obtain the lowest SWR An SWR of 1 5 1 or less is satisfactory Your hand may slightly influence the resonance of the loop while turning the Tuning Knob This is completely normal and you may have to touch up the adjustment slightly The...

Страница 13: ...r coupler with this antenna Accessories The following accessories are available for purchase from Chameleon Antenna TM Please contact us at support chameleonantenna com for current prices and availability High Efficiency Radiator Loop A high efficiency 1 collapsible aluminum tubing radiator loop which increases efficiency an average of 142 over the standard flexible radiator loop is available as a...

Страница 14: ...n a minimum of time and space CHA V2L Mobile Antenna The CHA V2L is a rugged multiband HF antenna designed for smaller vehicles CHA VHF UHF Magnetic Mount Mobile Antenna The CHA VHF UHF is a simple but great dual band antenna for 2M and 70CM CHA Hybrid Mini Portable HF Antenna Base The CHA HYBRID MINI Base is the portable version of the regular HYBRID The unit can be differentiated by the color of...

Страница 15: ...he 1 8 54 MHz band without any adjustment with most modern external antenna tuners No masts or guying are required CHA TD Tactical Dipole The CHA TD Tactical Dipole Antenna has been designed as an add on for the CHA F LOOP The CHA TD is a HF broadband antenna specially designed for portable HF communication where rapid deployment and simplicity of operation is essential The antenna will operate at...

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