Hf octopus antenna. Now you have an automatic bandswitching 5-band dipole! Rotate it for maximum signal and minimum QRM and noise with a small rotator like Hy-gain AR-500. . The Octopus antenna hub is a versatile tool that can transform ham sticks into four fully balanced dipoles in minutes. This HF STICK, 10 METERS 3/8-24, WITH WHIP, MOBILE ANTENNA This MFJ monoband mobile HamTenna Whip makes HF mobiling fun and easy! They are small, lightweight, efficient, and super easy-to-use. 95) or just ground mount for omni-directional. Jan 17, 2025 ยท An improved buildThis antenna was first described in the November-December 2023 Communicator. After a year of using it, I’ve developed some improvements. Now you have an automatic bandswitching 5-band dipole! Octopus antenna hub turns your ham-sticks into four fully balanced dipoles in minutes! Mix and match any four HF/VHF/UHF bands. The MFJ-1675T is ruggedly constructed. Octopus antenna hub turns your ham-sticks into four fully balanced dipoles in minutes! Mix and match any four HF/VHF/UHF bands. Assembly was straight forward but a mistake in guying caused the unit to tip over from a height of 10 feet. Use the eight 250W Screw in 75,40,20 meter hamsticks and a dual band 2M/440 MHz whip (two on each band) on opposite sides. The telescopic feature allows the array to be positioned from a low position for NVIS type operations and conversely it can be extended to twenty two feet for more DX like activity. Now you have an automatic bandswitching 5-band dipole! Rotate it for maximum signal and minimum QRM and noise with a small rotator like Hy-gain AR-500 Octopus antenna hub turns your ham-sticks into four fully balanced dipoles in minutes! Screw in 75,40,20 meter hamsticks and a dual band 2M/440 MHz whip (two on each band) on opposite sides. Andjust screw in your Hamsticks! Rotate with a small TV rotator (see Hy-Gain ARI-500, $129. Dual center and distributed loading lets you radiate efficiently -- you get more power out for working DX and ragchewing. Hamsticks break down to about four feet for easy storage. Now you have an automatic bandswitching 5-band dipole! MFJ Enterprises Inc , Ameritron , Hy-Gain , Hygain,Cushcraft , Vectronics , Mirage , MFJ, MFJ Enterprises , Antenna,Radio , Ham Radio , Amateur Radio , Tuner,Analyzer Octopus antenna hub turns your ham-sticks into four fully balanced dipoles in minutes! Mix and match any four HF/VHF/UHF bands. The MFJ-2100 Octopus Antenna Mount and 4 sets of HF Hamsticks, you can create four tuned mono-band dipoles with a common feeding point and built in balun. Now you have an automatic bandswitching 5-band dipole! WHAT IS IT? Multi-Band—somewhat—directional antenna Basic design uses 4-rigid dipoles (8 elements) arranged in a circular pattern ==> Octopus Antenna has small footprint but delivers impressive performance (about 15’ in diameter) Original design featured in December 2007 QST Magazine, pp 36-38; Geoff Haines, N1GY. It came with 8 hamsticks for four bands, 80, 40, 20, and 10. Octopus antenna hub turns your ham-sticks into four fully balanced dipoles in minutes! Screw in 75,40,20 meter hamsticks and a dual band 2M/440 MHz whip (two on each band) on opposite sides. The obvious, well publicized problem of the tabs bending outward occured but they were easily bent back, noting that this wouldn't happen too many times before they would shear off. Now you have an automatic bandswitching 5-band dipole! Open Box MFJ-2104 HF 250W Quad Band Octopus Antenna w/75, 40,20,15M SN165433 MFJ-2104 HF Quad Band Octopus Antenna w/75, 40,20,15M Use metal pole or telescopic mast up to 1 inch diameter, easily secured, tightens with thumb screw. Example: screw in 80,40,20 meter hamsticks and a dual band 2M/440 MHz whip (two on each band) on opposite sides. Makes for a great stealth, portable, campground or permanent base antenna with a Super lightweight, 14-foot diameter. The MFJ-1610T is ruggedly constructed. This configuration uses 8 elements, hence the name Octopus. Mixing and matching any four HF/VHF/UHF bands allows you to create a customized antenna setup to suit your needs. Several configurations are possible. These plans assume a 4-band, 8-element antenna centered on 2 electrical junction boxes, one atop the other. - Updated January 2025I appreciate inexpensive but effective antenna design. Sure, you can spend h At last, now that we've had some good weather, here is the review and test of the MFJ-2104 Octopus Antenna. A 4-band HF configuration is shown above. The "Octopus" Array is mounted on a telescopic mast home-brewed of aluminum tubing available from several sources. For example, by combining 80, 40, and 20-meter ham sticks with a dual-band 2M/440 MHz whip, you can easily set up an automatic band-switching 5-band dipole. HF STICK, 75 METERS 3/8-24, WITH WHIP, MOBILE ANTENNA This MFJ monoband mobile HamTenna Whip makes HF mobiling fun and easy! They are small, lightweight, efficient, and super easy-to-use. Bands are determined by which HF Hamsticks (Not Included) you choose to mount to the Antenna base. n3isd onpsv 9tt 0zscq abpkq cz pvdwld kvcp 1rh0fjlvl pusqv3