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WARNING: DO NOT INSTALL THE ANTENNA WHERE ANY PART
OF IT CAN COME INTO CONTACT WITH POWER LINES IN THE
EVENT OF STRUCTURAL FAILURE, DURING INSTALLATION OR
IN THE COURSE OF NORMAL FLEXING AFTER INSTALLATION
FOR SUCH CONTACT CAN RESULT IN DAMAGE TO PROPERTY,
BODILY INJURY OR EVEN DEATH!
WARNING: IN NO CASE SHOULD THE ANTENNA BE INSTALLED
WHERE STRUCTURAL FAILURE OF ANY PART OF THE
ANTENNA OR ITS SUPPORTING SYSTEM CAN ENDANGER
PERSONS OR PROPERTY.
CAUTION! A GROUNDED ANTENNA WILL BE AT D.C. GROUND
POTENTIAL! TO AVOID THE DANGER OF SHOCK CONNECT ALL
STATION EQUIPMENT TO A GOOD EARTH GROUND. IT IS ALSO
RECOMMENDED THAT ALL STATION EQUIPMENT BE
DISCONNECTED FROM THE POWER MAINS BEFORE
CONNECTING THE FEEDLINE TO THE ANTENNA. PLEASE
CONSULT THE A.R.R.L HANDBOOK OR OTHER REFERENCE
MANUALS FOR ADDITIONAL SAFETY PROCEDURES WHEN
WORKING WITH ELECTRICAL EQUIPMENT.
NOTE: PLEASE READ ALL INSTRUCTIONS THOROUGHLY BEFORE
PROCEEDING TO ASSEMBLY.
NOTE: HIGH PERFORMANCE BUTTERNUT VERTICAL ANTENNAS
REQUIRE A RADIAL SYSTEM FOR ALL INSTALLATIONS.
Butternut offers three systems for installing vertical antennas:
Model GRK Ground Radial Kit for ground mounting—160 thru 6 meter operation
Model RMK-II Roof Mounting Kit for roof mounting—80 thru 6 meter operation
Model CPK Capacitive Counterpoise Kit for compact installations below 25 ft
(7.6 m) above the earth—80 thru 6 meter operation
Please refer to TECH NOTES—GROUND/RADIAL SYSTEMS, at the end of this
instruction, for other mounting schemes and assistance in designing your own
radial system.
831 N Central Ave Wood Dale IL 60191-1219 Tel: 630.238.1183 Fax: 630.238.1186 e-mail: bencher@bencher.com http://www.bencher.com
-1-
Instructions
Model HF6V
00366IZV 100700
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Related Manuals for Butternut HF6V
Summary of Contents for Butternut HF6V
- Page 1 NOTE: HIGH PERFORMANCE BUTTERNUT VERTICAL ANTENNAS REQUIRE A RADIAL SYSTEM FOR ALL INSTALLATIONS. Butternut offers three systems for installing vertical antennas: Model GRK Ground Radial Kit for ground mounting—160 thru 6 meter operation Model RMK-II Roof Mounting Kit for roof mounting—80 thru 6 meter operation Model CPK Capacitive Counterpoise Kit for compact installations below 25 ft (7.6 m) above the earth—80 thru 6 meter operation...
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Page 2: Required Tools
REQUIRED TOOLS Flat blade screwdriver and pliers. A 1/4", 11/32" and 3/8" nut driver will be helpful. ASSEMBLY Refer to the appropriate diagrams and proceed as follows: 1. Check to be sure that all parts are present. 2. Install tube w/insulator (A) per instructions packaged with mounting system or Tech Notes Ground/Radial Systems. - Page 3 ASSEMBLY 9. Stretch the 80 meter (larger) coil on the coil assembly 80/40 meter (C) until the bottom of the lower clamp is even with the lower mark. Secure with a #10 flat washer, lock washer and wing nut. 10. Locate the capacitor assembly 80/40 meter (D) and install capacitor bracket 80 meter (D1) on the larger 200 pF capacitor using the installed screw.
- Page 4 ASSEMBLY 21. Stretch the coil until the bottom of the bottom clamp on the coil/capacitor assembly 30 meter (P) is even with the mark on coil support tube 30 meter (O) and tighten the wing nut. 22. Slide the remaining clamp from the above assembly over tube (E) and position it so the coil support tube L bracket (O1) is even with fourth turn, counting from the top of the 40 meter coil on the coil assembly 80/40 meter (C) and tighten the hex nut.
- Page 5 ASSEMBLY 35. Place the protective cap on one end of tube (J). 36. Slide the uncapped end of tube (J) into the slotted end of tube (I) until only 25 in (63.5 cm) extends and secure with compression clamp small adjustable. NOTE: In the following steps the antenna will be assembled and raised to its full vertical height.
- Page 6 CHECKOUT AND ADJUSTMENT or less at the low end of the band and may be as much as 100 kHz at the high end of the band, depending on the efficiency of the ground system used, greater bandwidth being associated with lossy ground systems. It should be remembered that on those bands where the physical height of a vertical antenna is less than a quarter wavelength, the earth (or the resonant radial system in above-ground installations) will have a good deal to do with VSWR and antenna tuning, bandwidth and overall...
- Page 7 CHECKOUT AND ADJUSTMENT matching should suffice for operation over most of 80/75 meters provided the 80 meter coil is readjusted for each different band segment. 3. Determine the frequency of minimum VSWR on 40 meters. The coil setting given earlier should produce resonance and lowest VSWR at approximately 7150 kHz. The 40 meter VSWR and resonance curve may be shifted in the same manner as on 80/75 meters by changing the setting of the upper coil clamp of coil assembly 80/40 meter.
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Page 8: Theory Of Operation
VSWR does not exceed 2:l. THEORY OF OPERATION The first L/C circuit generates enough reactance to bring the whole HF6V to resonance on 80 meters allowing it to act as a 1/4 radiator. It also generates enough capacitive reactance to produce another discrete resonance at about 11 MHz. -
Page 9: Electrical And Mechanical Specifications
40 meters, 40-100 kHz 75/80 meters GUYING The HF6V is designed to survive winds of up to 80 mph (129 kph) without guying in the absence of ice loading or heavy precipitation, but over a period of time it is to be expected that frequent or even constant flexing or vibration will reduce the chances for survival in winds that would not damage a newly installed antenna. - Page 10 00132JZV #10 FLAT WASHER 00133JZV #10 LOCK WASHER 00134JZV #10-24 HEX NUT 00135JZV #10-24 WING NUT 00050DZV KONNEKTOR-KOTE 1(25) X 8(203) 00089FZV PROTECTIVE CAP 0.375 00143BAV CAPACITOR BRACKET CLAMP 00144JZV COMPRESSION CLAMP SMALL ADJUSTABLE 00061SZV BUTTER-IT'S-NOT 00366IZV INSTRUCTIONS HF6V -10-...
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Page 11: Ground Mounting
TECH NOTES—GROUND RADIAL SYSTEMS MOUNTING TUBE INSTALLATION When tube w/insulator (A) is ground mounted, it should be protected against corrosion if placed in concrete, damp acidic or alkaline soil. Asphalt roofing compound, polyurethane varnish or other sealant that protects against moisture may be used. Concrete may be used in areas of high winds for greater strength, in which case the post may be twisted slightly during setting for easy removal later. - Page 12 TECH NOTES—GROUND RADIAL SYSTEMS If you can’t copper-plate the backyard, the best approach is to run out as many radials as possible, each as long as possible around the antenna in all directions. Radials may be left on top of the ground however they should be buried for the sake of pedestrians and lawnmowers. How long should radials be? A good rule is no shorter than the antenna is tall because 50% of your losses will occur in the first 1/4 out from the antenna.
- Page 13 TECH NOTES—GROUND RADIAL SYSTEMS the efficiency would be 15/35=43%. From the above calculations it is clear that the shorter a vertical antenna must be the less efficient it also must be for a given ground loss resistance. Or to state the matter another way, more elaborate ground or radial systems must be used with shorter verticals for reasonable efficiency.
- Page 14 Figure 4 but require only 4 supports. These multiband radials plus additional wire for an 80 meter radial are available separately (our STR-II kit) or as part of the Butternut roof mounting kit (RMK-II). Figure 4...
- Page 15 TECH NOTES—GROUND RADIAL SYSTEMS conditioning systems or structural steel frames of apartment buildings. Some amateurs have reported good results with vertical antennas extended horizontally or semi-vertically from metal terraces which serve as the ground connection. Alternatively, a quarterwave vertical may be window mounted if a short ground lead to a cold water pipe or radiator can be used.
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Page 16: Lightning Protection
Steel TV mast sections are readily available in lengths of ten feet and the mounting posts of Butternut HF verticals will slide into those which have an outside diameter of 1 1/4 inches and a wall thickness of .058... -
Page 17: Troubleshooting
TROUBLESHOOTING Check out your installation again, looking for loose connections and checking all dimensions. Then refer to the list of possible symptoms below: Symptom: Few or no signals heard: bands seem dead, SWR is very high. Look for: Open or shorted feedline, open or shorted matching line, broken connection at base of antenna (feedpoint). - Page 18 TROUBLESHOOTING Look for: Operation at high power levels in areas where salt or pollution deposits have built up on the insulators. The cure is to keep insulators clean through routine maintenance. Symptom: Intermittent operation. SWR jumps up and down suddenly, and reception is also intermittent.
- Page 19 Such repair or replacement is the Customer's sole and exclusive remedy for a Defective Product. Specifically, Butternut is not liable (to the Customer or otherwise) for (a) any loss or damage arising in any way from a Product or from actual or anticipated sale, lease, license or use of a Product, or...
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