background image

 

 

 

Included  with  the  antenna  is  a  special  mix 

#31 ferrite core that needs to be mounted 
on  the  control  wire  as  close  to  the 

antenna  as  possible.  Loop  the  wire 
through  the  choke  at  least  3  times. 

(Picture  11)    It  is  used  to  decouple  the 
control cable from the antenna. If you fail 

to install this ferrite core acts like a single 
radial and the antenna will be untunable. 

 

 

 

 

The  up/down  switch  (Picture  12)  that  comes 

with the antenna package will plug directly into 
the control cable to the antenna, then there will 

be 2 wires left on the switch. One will be white 
with red dots and one red with black dots. This 

system  is  designed  for  a  standard  12vdc 
system. Keep in mind polarity of these two wires 

are  not  important.  With  the  switch  mounted  up 
(wire to bottom) you can wire the red wire with 

black  stripes  to  positive  side  of  your  12vdc 
system,  and  the  white  wire  with  red  stripes  to 

the negative side. This will allow the antenna to 

go  up  while  you  press  the  up  button  (this  is 
the  way  most  wire  up  to  their  systems).  Up 

on the switch means the antenna is going UP in the band and DOWN in the bottom (this 
is  the  way  most  wire  up  to  their  systems).    Up  on  the  switch  means  the  antennas  is 

going up in height and Down in frequency. If you prefer that is reversed all you have to 
do is reverse the connections. Be sure you add the fuse to the positive side. 
Most installs:  
Red with black dots – 12 volt positive 
White with red dots – 12 volt ground 

Picture 12 

 

Picture 11 

Summary of Contents for 400A

Page 1: ...nnas Inc Instruction Manual for the Model 400A Continuous Coverage HF Antenna 18511 CR 304 St Joseph MO 64505 816 671 9409 816 364 2619 Fax E mail sales tarheelantennas com Technical Support 919 552 8788 E mail tarheelantennas aol com www tarheelantennas com ...

Page 2: ...ng List for Model 400A Package All of the above plus the following MT 1 Antenna Bracket Quick Disconnect for the Whip 21 ft of RG 8X Coax with connectors installed 1 pack of Coax Seal Model 400A Antenna Specifications Lower Mast Length 4ft Frequency Coverage with 6 whip 1 7 to 26 MHz Power Rating 250 watts P E P Typical SWR 1 5 to 1 or less Total Height with 6 whip at 25 MHz 10 4 Total Height with...

Page 3: ...allation if the SWR will not go below 1 5 on the frequencies above 10 MHz it s because of the ground path mentioned above Again ground close to the base is most important with this and any other antenna This is a large antenna that will require heavy duty mounts to withstand the pressure produced from the wind load All of Tarheel Antenna mounts are designed to take this load While we have a variet...

Page 4: ...install the upper half of the quick disconnect in the bottom of the antenna tight Picture 7 Be sure to use the lock washer The MT 1 antennas bracket has 6 cutouts for the anti rotation rib that s on the antenna Be sure the rib goes into one of these cutouts there is no need to cut the insulator it will compress enough to tighten the antenna down Picture 8 Don t forget to tighten down the top half ...

Page 5: ... a standard 12vdc system Keep in mind polarity of these two wires are not important With the switch mounted up wire to bottom you can wire the red wire with black stripes to positive side of your 12vdc system and the white wire with red stripes to the negative side This will allow the antenna to go up while you press the up button this is the way most wire up to their systems Up on the switch mean...

Page 6: ... in a location away from exhaust pipes and anywhere the cable can be damaged Next is the control box and control cable We preassemble everything here so you ll have a plug and play system If properly installed this antenna will have a standing wave below 1 5 from 1 8 to 30 MHz We know that every antenna installation is unique and it is impossible to describe all the scenarios in this manual Howeve...

Page 7: ...tuning positions of the Model 400 Tarheel Antennas LEXAN COVER REMOVED FOR CLARITY Model 400 full down position with 5 ft whip 28 0 MHz Model 400 21 2 MHz with 5 ft whip Do not try to twist or turn the bug shield on the outside of the antenna this is designed not to turn ...

Page 8: ... MHz with 5 ft whip and 1 1 2 of coil showing Model 400 3 9 MHz with 5 ft whip and 4 of coil showing Model 400 3 5 MHz with 5 ft whip with 5 of coil showing Model 400 1 9 MHz with 5 ft whip and 15 of coil showing Model 400 1 8 MHz with 5 ft whip and 16 1 2 of coil showing ...

Page 9: ...s it 7 Reassemble the Antenna After you have the antenna reassembled now is the time for a good cleaning on the outside Use the alcohol to remove the grime off the tube and Lexan next get a good coat or two of wax on it Warranty Guarantee IF for the 1st 30 days if for any reason you are not completely satisfied return the antenna undamaged for a full refund less the shipping charges The antenna ha...

Reviews: