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Guying the HF2V Antenna 

 
Guying of vertical antennas is always recommended for 
stability. However, if your area encounters severe wind 
velocities or icing conditions, simple guying will reduce the 
possibility of failure.  Guying rope should be tightened just 
enough to get any slack out of the rope. They do not need to 
be real tight. The ends of the ropes are slanted at about 45 
degrees and tied to the earth anchors that screwed into the 
ground at about the same 45 degree angle as the ropes will 
be.  The ropes are tied at the B1 and G tube joint.  
 
Synthetic Textile Industries Antenna Support Rope which is 
a premium double-braided Dacron/Polyester rope has been 
used for guying vertical antennas. A single set of guys 
placed just above the 40 meter circuit will contribute greatly 
to the stability and the longevity of the antenna, provided 
that the guys retain a slight amount of slack and do not 
come off at too steep an angle.  
 
At angles of less than 45 degrees, the guys begin to exert a 
downward compressive force on the structure that can be more of a threat to survival than lateral 
wind loading on an un-guyed structure.  
 
Under no circumstances should guys be placed higher than one-third of the way up the antenna. The 
upper two-thirds of the HF2V has little more than its own weight to support, so these sections may 
be allowed to bend with the wind with no serious risk of damage. It is the lower third of the antenna 
that must support both the weight of the upper sections and the wind loading on them and are thus 
more likely to receive damage in severe winds.

 

 
 
A Few Words About the Capacitors. 

 

The door-knob capacitor used on the Butternut Verticals can be difficult to find. Over the years the 
shape and size has changed depending on the source of the capacitors. 

 

Prior to October of 2016 - the following capacitor assemblies were used: 
 
 
 
 
 
                    

 BUT-290-05                      BUT-290-06                               BUT-290-07  

                           200 pf                                 67 pf                         67 and 200 pf with Bracket      
 
 

 

Summary of Contents for HF2V

Page 1: ...Band Vertical Antenna BUT HF2V BUT HF2V INS Revision 4 Butternut 2019 1200 Southeast Ave Tallmadge OH 44278 USA Phone 800 777 0703 Fax 330 572 3279 Artists rendition of an installation Tech Support and International 330 572 3200 ...

Page 2: ...ES IS DANGEROUS Warning Do not locate the antenna near overhead power lines or other electric light or power circuits or where it can come into contact with such circuits When installing the antenna take extreme care not to come into contact with such circuits because they may cause serious injury or death Before you begin working check carefully for overhead power lines in the area you will be wo...

Page 3: ...l antennas may sustain damage or fail altogether With the small amount of effort needed to install a four point guying system the risk hardly seems worth taking A four point guying scheme provides the best mechanical advantage to reduce wind stress regardless of direction Information on guying the Butternut HF2V is included in this manual Site Selection Ideally select a mounting location clear fro...

Page 4: ...ercome unknown poor soil conditions improve bandwidth and ensure the best performance efficiency possible from the Butternut HF2V antenna Radial Wire that is 14 gauge stranded copper with black relaxed PVC insulation wire is suggested for the best results DXE RADW 32RT or 65RT Radial Wire Kits The wire radials should be placed as symmetrically as possible straight from the feedpoint around the ver...

Page 5: ... machined are referred to as burrs and the process by which they are removed is known as deburring The aluminum tubing is machine cut on both ends and machine slit on one end You should further assure that there are no ragged edges or protrusions 2 Clean the inside of the aluminum tubing to clear out any dirt or foreign material that would cause the aluminum tubing sections to bind during assembly...

Page 6: ...INTER THE FIBER ROD INSULATOR AND COMPLICATE INSTALLATION 3 Slide the insulator on 40 meter tube B1 into the top of base section B and secure with a 8 x 1 1 2 bolt 8 lock washer and 8 hex nut The antenna will be mated to tube A and the other insulator along with the red coil Q in a later step in the assembly NOTE The top of base section B has the mounting hole located 1 4 from the end In all subse...

Page 7: ...MENT ON THE BASE SECTION Note Jet Lube SS 30 Anti Oxidant should be used between all antenna element sections Jet Lube SS 30 is an electrical joint compound to affect a substantial electrical connection between metal parts such as telescoping aluminum tubing or other antenna pieces It ensures high conductivity at all voltage levels by displacing moisture and preventing corrosion or oxidation Jet L...

Page 8: ... and 8 hex nut 14 Raise tube assembly G through M vertically and slide the lower end of tube G into the upper end of 40 meter tube B1 Align the holes of tube G with those of 40 meter tube B1 pass a 8 x 1 1 2 bolt through the holes and tighten securely with a 8 lock washer and 8 hex nut NOTE DURING THE FOLLOWING STEPS PLEASE REMEMBER THAT A DIFFERENCE IN POTENTIAL MAY EXIST BETWEEN COAXIAL LINES CO...

Page 9: ...a short piece of copper strap from the radial plate to the lower connection of coil Q mounted on tube A of the HF2V or the optional BUT MPS Mounting Post Sleeve In either case a ground wire attachment from the lower tube A to the Radial Plate should be made to ensure a good RF connection The DXE RADP 3 has a mounting area for an optional dual SO 239 This is can used with a short connecting coax ca...

Page 10: ...uld be tapped down along the 40 meter coil so that four full turns are shorted out Secure it with 8 x 3 4 bolt 8 lock washer two 8 flat washers and 8 hex nut The other shorting strap if needed may be attached to the lower clamp of the 80 meter coil and tapped upward along the coil for decreased inductance Secure it with 8 x 3 4 bolt 8 lock washer two 8 flat washers and 8 hex nut With no top loadin...

Page 11: ...coil Q may be viewed as a step up transformer that will match the lower impedance at the feedpoint to the characteristic impedance of the feedline and proper adjustment will produce SWR of close to unity in those cases where the earth loss resistance is sufficiently low to keep the feedpoint impedance below the characteristic impedance of the cable used If earth losses are unusually great as in de...

Page 12: ...should be avoided regardless of its strength rating because it can stretch as much as 15 Polypropylene rope or even nylon rope may also be used although the former should be checked periodically for signs of weather deterioration The wire suggested for elevated radials is a 14 gage stranded copper with a black relaxed PVC insulation The relaxed insulation makes handling the wire easy since it will...

Page 13: ...to support itself Operation of the HF2V may be extended to the other bands through the addition of accessories without sacrificing 80 and 40 meter performance Butternut HF2V Parts List Ref Description Qty A Tube A with Insulator 1 1 4 dia x 24 long 1 B Tube B element 1 1 4 dia x 48 long 1 B1 Tube B1 with Insulator 1 1 4 dia x 14 long 1 C Coil Assembly 80 40 Meters 1 D Capacitor Assembly 80 Meters ...

Page 14: ... 13 Butternut HF2V Detail Drawings Not Scale ...

Page 15: ...etain a slight amount of slack and do not come off at too steep an angle At angles of less than 45 degrees the guys begin to exert a downward compressive force on the structure that can be more of a threat to survival than lateral wind loading on an un guyed structure Under no circumstances should guys be placed higher than one third of the way up the antenna The upper two thirds of the HF2V has l...

Page 16: ...ial or workmanship Butternut shall upon prompt notice thereof issue shipping instructions for return to Butternut transportation charges prepaid by Buyer Every such claim for breach of these warranties shall be deemed to be waived by Buyer unless made in writing The above warranties shall not extend to any products or parts thereof which have been subjected to any misuse or neglect damaged by acci...

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