K8msh ocf dipole. I will explain what to look for and and how to set on.

K8msh ocf dipole MFJ 913 4:1 balun: https://amzn. Forgot Password Login If you've forgotten and/or need to reset your password, please enter your Callsign and use the button below. overall rating; 0: 0: 1: 5 May 19, 2023 · DX Engineering Multi-Band Off-Center Fed Dipole (OCF) Antenna Kits. This antenna is also available in a 1-KW version. Don’t do Nov 3, 2024 · Seller shipped item very quickly. Buckmaster’s OCF 80 covers 80/75, 40, 20, 17, 12, 10, and 6 meters. Able to make some great contacts. The center connection is an old Carolina Windom 4:1 current balun fed with RG-8X. 1 - 10. May 15, 2021 · K8MSH 7-Band 300w PEP OCF Dipole Antenna Radiowavz 75M Double Bazooka PAR ENDFEDZ 40-10-KW EFHW 1KW ICAS ANTENNA Wellgood Loop Amplifier Par Electronics HF-Rectangles May 19, 2014 · For the purposes of discussion, an NEC-4 model of an OCF dipole was created. I also have a Buckmaster 7 band OCF and questioning if I might have better results with the OCF, or perhaps another antenna, that will improve results. 8 band ocf dipole flex weave Able to get balun up about 50 ft, and ends about 20 ft. Tried an OCF dipole for about a month, now I have a 20m dipole on a 40ft mast inverted V. net Gold Membership Buckmaster OCF Dipole Antennas Antenna Support Rope Line-Grips Harken Stainless Steel Pulleys RF Chokes CQ Magazine Archives World Prefix, WAS, and Great Circle Maps Custom Great Circle Maps HamCall Mousepads Custom Name Badges Amateur Radio Operator Certificates Antenna Wire Screw-on Cable/Wire Clamps Stringliner Reel with 270 feet of Review Summary For : K8MSH 7-Band 300w PEP OCF Dipole Antenna; Reviews: 1 MSRP: $65. I find the noise floor lower with the dipole but also receive strength suffers a little, but the lower noise floor compensates. I put up the combination at 35 ft as in inverted V. 00; Description: 80-10 meter 300w Off Center Fed Dipole Antenna: Product is in production: More Info: # last 180 days Avg. In this Video I will show how to build a 20 meter Dipole from parts you might have around the house, from build to tuning for your desired frequency. Forgot Password K8MSH 7-Band 300w PEP OCF Dipole Antenna The best OCF antenna I have used: Anytone AT-5888UV-III Tri-band Mobile Only full power, remote mount triband mobile - Some Quirks: Kenwood TS-450 Great value: Astron RS-35M It does the job well. The performance is very good across the HF bands and requires little or no tuning. 15 MHz. 6 MHz and you arrive at an overall length of 130′. Usually, the biggest problem is hiding the feed line to the antenna. 4-Band OCF Off Center Fed HF Dipole Antenna 300w PEP (#394115691579) See all feedback. I will be purchasing more antennas from this seller. com Dec 6, 2024 · Here are some advantages of using a horizontal dipole for your personal ham setup. If the feed line drops down the tree trunk, it can be painted to match the bark color and buried until it reaches the house. Cut the dipole wire to be a little longer than the computed length. Our 7-Band antennas are OCF (off-center-fed), with a 45 foot Review Summary For : K8MSH 7-Band 300w PEP OCF Dipole Antenna; Reviews: 1 MSRP: $65. Using EZNEC, the design of an OCF dipole allows many variations in overall antenna length, K8MSH 7-Band 300w PEP OCF Dipole Antenna RFINDER- The Worldwide Repeater Directory Anytone AT-5888UV-III Tri-band Mobile Kenwood TS-450 Astron RS-35M MICROHAM ARCO ANTENNA CONTROLLER GUOHETEC PMR 171 VGC-VN-N7500 50W Dual Band Mobile Radio Kenwood TS-680S Radio Dust Covers by W6ON DX Patrol UpConverter Mark4 Yaesu FT-710 Field/Aess. Jan 28, 2022 · For an excellent article on traps, read this OnAllBand’s post from Mark, K8MSH, Antenna Traps: A Way to Cope with Limited Space. See full list on onallbands. One of the disadvantages of a horizontal dipole is length, especially on the low frequencies. Item description from the seller. Forgot Password Nov 26, 2024 · This off-center fed dipole antenna is ruggedly built with stainless steel hardware, 16 awg stranded copper wire, and is weather-resistant for outdoor use in permanent installations--- external hardware is stainless steel. Login If you've forgotten and/or need to reset your password, please enter your Callsign and use the button below. Dec 17, 2010 · The OCF-3K80 is an off-center fed multi-band dipole. EZNEC models of dipoles from the standard formula, fed directly with 50 ohm coax (blue line) or series matched (purple line). Good swr on 160, 80, 40, and 20. ". I have a 40-10 EFHW as a sloper. If overcoming a -3db loss with the end-fed, the OCF immediately appears to be a better solution. I purchased the 3 kW version of this Buckmaster 8-band (160, 80/75, 40, 20,17,12,10, 6m) OCF (off-center feed) dipole with the purpose in mind of having a single antenna to cover the lower HF bands (160/80/75/40m). overall rating; 0: 0: 1: 5 Login If you've forgotten and/or need to reset your password, please enter your Callsign and use the button below. Antennas by k8msh Shop the best selection of 7-Band OCF Off Center Fed HF Dipole Antenna 1. It will work well on the 80, 40, 20, 17, 12, and 10-meter ham bands with no need for tuning. They’re very affordable, portable, and will get you on the air quickly. Thanks for an excellent product! Dec 3, 2024 · World's leading amateur radio web site with news, technical articles, discussions, practice exams and more. Get high performance and reliable signal reception for your amateur radio activities. MICROHAM ARCO ANTENNA CONTROLLER Arco Junior with MacLogger DX (MacOS) K8MSH 7-Band 300w PEP OCF Dipole Excellent OCF Dipole Time Owned: more than 12 months. MICROHAM ARCO ANTENNA CONTROLLER Arco Junior with MacLogger DX (MacOS) K8MSH 7-Band 300w PEP OCF Dipole The OCF dipole presents a reasonably good match to the transmitter across multiple bands which are EVEN harmonics of the fundamental frequency, including 80, 40, 20, 10 and 6 m bands. to/3hplfbnIsotip butane soldering iro K8MSH 7-Band 300w PEP OCF Dipole Antenna Radiowavz 75M Double Bazooka PAR ENDFEDZ 40-10-KW EFHW 1KW ICAS ANTENNA Wellgood Loop Amplifier Par Electronics HF-Rectangles BUCKMASTER DX-OCF 7 BAND 80/75 40 20 17 12 10 6 Meters Off Center Fed Dipole Low SWR 300 Watts Max. Offsets of 33%, 25% and 20% will be illustrated. I will string it up when time permits and hoping to get a good idea of what to expect. Specifically engineered for operation on the 40, 20, 10, and 6 meter bands, these antennas deliver world-class performance by using the whole antenna element on every band. Part of what makes the horizontal dipole special is how simple it is. For best results support center at 30+ feet and ends over 15 feet. HamCall DVD/USB/Download HamCall. K8MSH 7-Band 300w PEP OCF Dipole Antenna Radiowavz 75M Double Bazooka PAR ENDFEDZ 40-10-KW EFHW 1KW ICAS ANTENNA Wellgood Loop Amplifier Par Electronics HF-Rectangles K8MSH 7-Band 300w PEP OCF Dipole Antenna Radiowavz 75M Double Bazooka PAR ENDFEDZ 40-10-KW EFHW 1KW ICAS ANTENNA Wellgood Loop Amplifier Par Electronics HF-Rectangles K8MSH 7-Band 300w PEP OCF Dipole Antenna The best OCF antenna I have used: RFINDER- The Worldwide Repeater Directory Not What It Once Was: Anytone AT-5888UV-III Tri-band Mobile Only full power, remote mount triband mobile - Some Quirks: Kenwood TS-450 Great value: Astron RS-35M It does the job well. Compared with my previous 40-10m OCF, this one does a much better job with band coverage and reception. Ham-made in USA from quality materials. The 80m version of the OCF Dipole is supposed to be capable of 80, 40, 20, and 10m bands. The 4-Band OCF dipole antenna was excellent quality. Take advantage of the proven effectiveness, ease of construction, and hassle-free installation of the Off-Center Fed Dipole, now available in this high-quality kit from DX Engineering. For example, an 80 meter dipole cut according to the formula, hung at 80 feet and Oct 15, 2014 · Construct a multi-band off-center-fed (OCF) dipole covering the 40, 20, 15, and 10 meters amateur radio bands, and possibly the 6 meter band (but that. The price is certainly good. K8MSH 7-Band 300w PEP OCF Dipole Antenna Radiowavz 75M Double Bazooka PAR ENDFEDZ 40-10-KW EFHW 1KW ICAS ANTENNA Wellgood Loop Amplifier Par Electronics HF-Rectangles Unlike Buckmaster OCF antennas (at twice the price, and no WARC bands, 6 meter or 15 Meter operation, you can transmit and receive on 12, 15, 17 and 30 meters with our OCF - Better engineering and lower price - only from Palomar Engineers! INSTALLATION. They are designed to give you years of trouble-free service! Buckmaster antennas are shipped fully assembled, ready to deploy with no tuning or trimming Sep 11, 2020 · A wire can be used to make a dipole, inverted L, or end-fed antenna that will be virtually invisible to anyone on the street. Depending on band and antenna surroundings, in many cases the automatic antenna tuner built into the transceiver will provide the desired band coverage at good SWR. It is rated to take 2 KW. 2015 Fig 1. 5 KW PEP at Ubuy South Africa. MICROHAM ARCO ANTENNA CONTROLLER Arco Junior with MacLogger DX (MacOS) K8MSH 7-Band 300w PEP OCF Dipole Total OCF Power Loss – 100 W input Table 6 adds losses from Tables 2, 4 and 5 for T-Line = 15 m RG-58C. For years I ran a 40 meter dipole at 35 ft and an 80 dipole at 12 ft. K8MSH 7-Band 300w PEP OCF Dipole Antenna Radiowavz 75M Double Bazooka PAR ENDFEDZ 40-10-KW EFHW 1KW ICAS ANTENNA Wellgood Loop Amplifier Par Electronics HF-Rectangles by Mark Haverstock, K8MSH × on September 23, 2024 at 2:11 pm × 0 comments Most new hams start with an HT (handie-talkie) radio. Simplicity is Key. Conclusion The OCF dipole is a compromise design HF antenna which allows operation on several bands without using an antenna matching unit (ATU). MICROHAM ARCO ANTENNA CONTROLLER Today I built and put up a OCF inverted-v dipole using with a 133 foot total length of #14 insulated THNN with the short leg cut to 44 feet. It is complete, cut, tuned, and ready to hang. K8MSH 7-Band 300w PEP OCF Dipole Antenna Radiowavz 75M Double Bazooka PAR ENDFEDZ 40-10-KW EFHW 1KW ICAS ANTENNA Wellgood Loop Amplifier Par Electronics HF-Rectangles Find Buckmaster OCF Dipole Antennas and get Free Shipping on Most Orders Over $99 at DX Engineering! Buckmaster OCF Dipole Antennas are made from the best quality materials with a completely potted waterproof balun and no external connectors. The rugged yet lightweight DXE-OCF-KIT features a power rating up to a legal limit of 1. I ordered one and the Maxcon isolator. K8MSH 7-Band 300w PEP OCF Dipole Antenna The best OCF antenna I have used: Anytone AT-5888UV-III Tri-band Mobile Only full power, remote mount triband mobile - Some Quirks: Kenwood TS-450 Great value: Astron RS-35M It does the job well. Off-Center Fed Dipole Design Here are some typical OCF dipoles that are successful designs 160-6 meter Double Off Center Fed antenna layout (using a double tuned stub for better 20/40 meter performance) Here is the 160-6 meter SWR graph using 200 feet of RG213 feed line and an average height above ground of 35 feet: Palomar Engineers PAL-OCF1606 […] Sep 24, 2020 · There are even variations of the dipole that can cover multiple bands, like trap dipoles, parallel dipoles and off-center-fed (OCF) dipoles. The third harmonic of 3. I had to do something to improve 80. Construction is very… K8MSH 7-Band 300w PEP OCF Dipole Antenna RFINDER- The Worldwide Repeater Directory Anytone AT-5888UV-III Tri-band Mobile Kenwood TS-450 Astron RS-35M MICROHAM ARCO ANTENNA CONTROLLER GUOHETEC PMR 171 VGC-VN-N7500 50W Dual Band Mobile Radio Kenwood TS-680S Radio Dust Covers by W6ON DX Patrol UpConverter Mark4 Yaesu FT-710 Field/Aess K8MSH 7-Band 300w PEP OCF Dipole Antenna The best OCF antenna I have used: Anytone AT-5888UV-III Tri-band Mobile Only full power, remote mount triband mobile - Some Quirks: Kenwood TS-450 Great value: Astron RS-35M It does the job well. ) Buckmaster 7-Band OCF Dipole Antennas are 135 feet (41 meters) long and work on 80, 40, 20, 17, 12, 10, and 6 meters. The antenna worked well but had extremely high reflected power on Aug 3, 2023 · Compared to a single-band resonant dipole with equal length legs, the OCF dipole offers the benefit of HF multi-band operation at the “cost” of slightly to somewhat elevated SWR. May 10, 2019 · Another alternative is the off-center fed dipole (OCF). Order 7-Band 100 Watt QRP (low power) OCF Dipole Antenna: $276 Dec 4, 2024 · this 7-Band OCF Off Center Fed HF Dipole Antenna 1 KW PEP wire WORKS GREAT on the 7 bands advertised. A couple friends were running the OCF-3K80 with great results on multiple bands. With a tuner, you are also supposed to be capable of using some of the WARC bands. Let's find out by examining different offset feedpoints on an 80 M half-wave dipole for each amateur radio HF band. DX Engineering Multi-Band Off Center Fed Dipole Antenna Kits (OCF) take advantage of the practice of feeding two different length wire dipole legs with a 4:1 Balun. 66 feet (64 feet, 8 inches). Jun 17, 2020 · I build an 80 meter off center fed dipole antenna for this year's ARRL Field Day Event. About this seller. Also exclusively available to North American hams from DX Engineering are DXR Series Yagis, rotatable dipoles, and log periodic dipole arrays from InnovAntennas, manufactured by WiMo for InnovAntennas Limited UK. The antenna can be mounted as a dipole or inverted vee. Dec 5, 2019 · K8MSH 7-Band 300w PEP OCF Dipole Antenna Radiowavz 75M Double Bazooka PAR ENDFEDZ 40-10-KW EFHW 1KW ICAS ANTENNA Wellgood Loop Amplifier Par Electronics HF-Rectangles May 1, 2021 · A 40-meter off-center-fed dipole (OCFD) is a versatile antenna for portable operation or space-constrained fixed stations because it is a manageable length and can cover 40, 20, 15, 10, and 6 meters with low SWRs. Unlike Buckmaster OCF antennas (at twice the price, and no WARC bands, 6 meter or 15 Meter operation, you can transmit and receive on 12, 15, 17 and 30 meters with our OCF - Better engineering and lower price - only from Palomar Engineers! Order 4-Band 5,000 Watt OCF Dipole Antenna: $565 (5,000 watt models are special order only and are made on-demand, so will always take a couple weeks to ship. 5 MHz (3xf0) is 10. I will be covering the advantages of OCF-Dipole Antenna as well as what some of the top vendors offer. The second contact was 1300 miles away. 238 MHz. 5kW. Same with the OCF. This off-center fed dipole antenna is ruggedly built with 14 awg stranded copper wire, and is weather-resistant for outdoor use in permanent installations--- external hardware is stainless steel. I put it up over the weekend, turned on my radio and my first contact was 300 miles away. Buckmaster Off-Center-Fed (OCF) Dipole - Multi-Band Antennas 4-Band does 40, 20, 10 and 6 meters, no tuner required! Legs are 23 and 45 feet 7-Band does 75/80, 40, 20, 17, 12, 10 and 6 meters, no tuner required! Legs are 45 and 90 feet 8-Band does 160, 75/80, 40, 20, 17, 12, 10 and 6 meters, tuner may be required for 160. Jan 18, 2020 · An Off Center Fed Dipole is an easy way to use one antenna for multiple bands. The dipole is about 40m in length and at 10m height above average ground, the model includes the common mode current path that exists on a vertical feed coax, a 4:1 current balun with choking impedance of 1000+j1000Ω at the top, and a 1:1 current balun with choking Friend has OCF dipole and he also needed about 50m of coax from antenna transformer to a 1:1 choke, a lot of ground wiring to all directions from that to give the RF alternate path and then it stopped dumping RF into the shack and works good. The OCF-3K80 is complete with a 4 to 1 Balun. Feeding the OCF dipole at a point that is one-third of its For an 80-10 meter OCF dipole antenna, divide the 1⁄2 wavelength standard of 468 by the lowest operating frequency of 3. The antenna is made of two conductors of equal length on both sides with a feedline connected between them. 5 MHz but our amateur radio 30 M band allocation is a shade lower in frequency at 10. Using the formula to calculate dipole length (468/frequency in MHz), the total length of the dipole would be about 64. After wasting days researching and unsuccessfully trying to build my own, I purchased two pairs of Unadilla traps: the KW40 and KW80. Rating last 180 days Total reviews Avg. I will explain what to look for and and how to set on Nov 26, 2024 · Ham-made in USA from quality materials. Starting with the data in the wire table supplied with the traps, adding windage for trap connections and an extra foot for "tuning," I had a three-band dipole up and working in a matter of hours. Since the dipole is typically a half-wave antenna, it can be impractical on small lots. By moving the feedpoint away from the center and adding a 4:1 or 6:1 balun, you can cover a number of HF bands. MFJ-2012 Power-Lite OCF Dipole Antennas work DX stations with ease because the Power-Lite OCF antennas are engineered to launch a powerful, globe-spanning signal. Dec 4, 2024 · Antennas by K8MSH. A Truly Broadband, Efficient Low Band Dipole - 2 - W7ZZ and N6RY, c. Check ou I'm experiencing the exact same results. Compared to a single-band resonant dipole with equal length legs, the OCF Dipole offers the advantage of HF Multi-Band operation at the "cost" of slightly to somewhat elevated SWR. This is the length of a standard dipole but instead of dividing the result in half, use a 36/64% offset to determine the feedpoint. Legs are 90 and 180 feet Dec 5, 2019 · K8MSH 7-Band 300w PEP OCF Dipole Antenna Radiowavz 75M Double Bazooka PAR ENDFEDZ 40-10-KW EFHW 1KW ICAS ANTENNA Wellgood Loop Amplifier Par Electronics HF-Rectangles Radiowavz DX40SH DX Commander All-Band Vertical Greyline Performance DXF Flagpole Verticals Chameleon Emcomm III Portable Cobra UltraLite Multiband Antenna Aug 26, 2021 · Compute the approximate antenna length for the center frequency of the range for which you are trimming–about 7. gvtdzxo xvvzq gjlqxrt qdlx hbzxrx uypm fnom lkgspcyn voosbw mywsc