Chameleon Antenna CHA 20 FD Скачать руководство пользователя

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CHA 40/20 FD

Page 14

Chameleon Antenna

Products

Please go to

http://chameleonantenna.com

for information about additional quality antenna products available for

purchase from Chameleon Antenna

–

The Portable Antenna Pioneer.

References

Silver, H. Ward (editor), 2013,

2014 ARRL Handbook for Radio Communications

, 91

Edition, American Radio

Relay League, Newington, CT.

1987

, Tactical Single-Channel Radio Communications Techniques

(FM 24-18)

, Department of the Army,

Washington, DC.

Turkes, Gurkan, 1990,

Tactical HF Field Expedient Antenna Performance Volume I Thesis

, U.S. Naval Post

Graduate School, Monterey, CA.

Содержание CHA 20 FD

Страница 1: ...40 20 Meter Fan Dipole Antenna CHA 40 20 FD Operator s Manual Nevada USA WWW CHAMELEONANTENNA COM VERSATILE DEPENDABLE STEALTH BUILT TO LAST...

Страница 2: ...trust insulation to protect 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 MH...

Страница 3: ...nna Without an antenna tuner the Fan Dipole can operate on the 40 and 20m amateur radio bands A wide range antenna tuner will also enable operation on the 17 15 12 and 10m bands Figure 1 Fan Dipole An...

Страница 4: ...are the primary method of HF radio wave propagation HF radio waves on a frequency below the critical frequency found by an ionosonde are reflected off one of the layers of the ionosphere and back to...

Страница 5: ...r is used to match the antenna and coaxial cable preventing feedline radiation The BALUN is also used as the mechanical and electrical center attachment points for the antenna b Top Eyebolt The Top Ey...

Страница 6: ...uded to wrap around the Line Winders for use in field tuning the antenna Antenna Installation The Chameleon AntennaTM 40 20 Meter Fan Dipole antenna can be deployed as a Flat Top horizontal dipole or...

Страница 7: ...other Antenna wire 11 Connect the Coaxial Cable to the Coaxial Cable Connection d on the bottom of the BALUN 12 Raise the BALUN to near the top of the Mast k or other support Figure 2 show a typical...

Страница 8: ...and installed in variety of ways in the field all of which affect the resonant frequency of the antenna Use this simple field tuning procedure to quickly and easily adjust the resonant frequency for e...

Страница 9: ...you can say that the antenna is resonating close to 150 KHz too low Using our rule of thumb from above you would take three half turns off the Line Winder Figure 4 2nd Case Decreasing SWR by frequency...

Страница 10: ...000 KHz we should add just one half turn on the Line Winders to increase the resonant frequency of the dipole to around 7 150 KHz Some trial and error may be necessary but remember as long as the SWR...

Страница 11: ...on some frequencies indicate a tuning issue perform the Field Tuning procedure 3 Check the Antenna Wire Spade Lug connections on the sides of the BALUN to make sure they are tightly connected and free...

Страница 12: ...figures 6 and 7 Power Handling 150 Watts Space Required An area 54 feet in length and 40 feet in width and have or be able to accommodate a 20 foot mast or other vertical support near the center of th...

Страница 13: ...f 12 months from the date of purchase To obtain warranty service return all components of the system to Chameleon Antenna at your expense Chameleon Antenna will repair or replace defective components...

Страница 14: ...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 C...

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