background image

 

Page 7 

SECTION 2 – System Overview 

Physical Description 

Physically this antenna consists of:  
1 –Padded Black Case,  
1 – 6 foot Anodized Black Steel Tripod (NOTE – Guying the tripod is recommended, and for permanent 
deployments, a user supplied mast that is 6 feet high can be used),  
1 – 2-30MHz antenna.   

Equipment Characteristics 

Low noise receive characteristics occur due to the entire antenna system being placed close to the earth. This 
balanced system requires no additional components be added to achieve a gain of -21 dBi at 2 MHz, gain which 
increases to -3.4 dBi at 15 MHz and above. The VSWR is 2.5:1 or less over the 2 to 15 MHz band, peaking at 3:1 on 
19MHz, and less than 2.5:1 from 21 to 30 MHz. At the lower frequencies, the maximum radiation is toward the 
zenith and the azimuth patterns are essentially omni directional. The antenna is designed for 100 W average and 
250 W PEP.  

Summary of Contents for DX-Mil

Page 1: ...Page 1 Manual for the DX Mil Model 2 30MHZ HF Antenna Manufactured by Alpha Antenna 1 888 482 3249 Website http AlphaAntenna com User Guide Version 1 7 September 18 2019...

Page 2: ...embled 13 Appendix B Patterns 14 Appendix B 1 Elevation Azimuth Patterns 14 Support 16 REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS If you find any mistakes in this document or if you know of a way...

Page 3: ...mance in mind REMEMBER ELECTRIC POWER LINES AND PHONE LINES LOOK ALIKE FOR YOUR SAFETY ASSUME THAT ANY OVERHEAD LINES CAN KILL YOU 3 Call your electric power company Tell them your plans and ask them...

Page 4: ...ablishes safe operating distances from antennas associated power levels in order to permit the operator and persons who may be impacted by operation to exist in a safe environment Guidelines for Maxim...

Page 5: ...verse distance field is the field that would be present if there were no attenuation due to the surface over which the signal is propagated The strongest practical signals occur over seawater As the s...

Page 6: ...the relative percentage of the antenna input resistance characterizing each mode Each of these in turn is a function of the height above ground The total input resistance is that portion due to the NV...

Page 7: ...racteristics occur due to the entire antenna system being placed close to the earth This balanced system requires no additional components be added to achieve a gain of 21 dBi at 2 MHz gain which incr...

Page 8: ...Specifications ITEM SPECIFICATIONS Electrical Characteristics Frequency range Polarization RF power capacity watts Input impedance VSWR 2 30 MHz Horizontal and Vertical polarization 250 W PEP 100 W Av...

Page 9: ...using a calibrated AIM 4300 from Array Solutions and is checked for redundancy using a calibrated Rig Expert AA 54 Equipment is connected via a barrel connector with no coax Once coax is connected op...

Page 10: ...Then the placement of these same elements closer to the ground enables the sky wave pattern when the signals are reflected off the ground that by design is close to the Horizontal elements The Vertic...

Page 11: ...radiation take off angle with increased height over the ground where at great heights the ground conductivity has little influence on gain By design the DX Mil places both its Horizontal and Vertical...

Page 12: ...il antenna should be placed in the center of a clear area Installation of the antenna near any tall metal object or under heavy foliage should be avoided Under no circumstances should structures come...

Page 13: ...et Z0 Z2 6 feet Z1 Z2 24 feet Z0 X1 35 feet Z0 X2 35 feet Z0 Y1 35 feet Z0 Y2 35 Feet Z2 X0 30 feet Z2 Y0 30 feet Components Assembly T1 Tripod for temporary or a user supplied mast that is 6 feet hig...

Page 14: ...Page 14 Appendix B Patterns Appendix B 1 Elevation Azimuth Patterns...

Page 15: ...Page 15 Stop Patterns...

Page 16: ...s or problems with your Alpha Antenna please contact us You can reach us via Email support AlphaAntenna com Phone 1 888 482 3249 Web www AlphaAntenna com Our mailing address is Alpha Antenna 112 East...

Reviews: