Doublet antenna 160m. I heard a chap on 5mHz the other day.

Doublet antenna 160m There are several reasons why I chose the double L antenna: Part 2 – Doublet Antenna – 1. The item “MFJ-1777 Wire antenna, 160m-6m, doublet” is in sale since Monday, October 19, 2015. 9 feet. ) antenna on 160M. Purchased new last year (2021) from HRO. I guess I am going to have to buy another piece of coax. Florence HamFest 2016 » Leave a comment. 40 is bad, 80 is worse, and 160 is don't even thing about it. Your email address will not be published. After reading the article Antennas and the QRP Operator by Jim Thompson, W4THU, in Low Power Communications, Volume 2 (edited by Rich Arland, K7YHA), I built a 20m Extended Double Zepp. I have an 80m doublet (135' long) fed with ladder line and up 60', and yes, I can tune it Seleccionar el departamento en el que deseas buscar I have a few different antennas, from Rhombics to beams and single band antennas, but for simple wire multiband I use resonant home brew, full size (no traps), 5 band fan half-wave dipoles configured in an inverted V, 160/80/60/40/30 meters (and another for 20/17/15/12/10), cut for the section of each band I was most interested in so that no tuner is needed in those segments. 39. The goals of the project were to provide an End-fed 10-160M EmComm antenna. KB7TBT, Dec 20, 2019 #1. Unlike typical antennas, this is a non-resonant antenna. 160M Off-Center-Fed Full-Wave Doublet Antenna. K4TR Building an amateur radio antenna for 160 meters is a challenge. Balanced line-fed doublet 160-10M Time Owned: more than 12 months. Buy product. The 50 ohm feed point is tapped at 6 turns, with additional switched taps at 8, 11, 14, 19, 25, 42 and 46 turns The My antenna was installed about 80-100 feet above ground between two tall Pine trees. It covers 7 bands, 10-12-15-17-20-40-80m. Posted by Bruce Lawver on 25th Nov 2024 I used the AIRBOSS to launch a 2 oz lead weight over two 90 to The All Band HF Doublet Mk3 is a 42-meter-long Inverted 'V' antenna, with an apex of 11 meters above the ground. I have run legal limit power into it many times. 160m is also referred as the "Gentleman's band". SPC HF ANTENNA TUNER the antenna, minimizing 12R trap losses. Recently I'd made mention about some experiments I'd performed with my way too short 44 foot Doublet antenna. I hope yo The All Band Doublet configured as a 'T' Antenna The main HF antenna is an All Band Doublet fed with ladder line and matched with a T-Match antenna tuner including a 1:4 current balun that gives access to all HF bands including the The Big Zapper HF Antenna. In this configuration, the man-ufacturer claims to have an advantage over a typical doublet antenna. This antenna is so common on the bands that I felt obliged to include it. HybridDX™ is engineered to replicate the performance of a 135-ft. I think that if you can deal with the open wire line routing issues, and use an efficient matching network (tuner) Such a matching network will also benefit a 1/4 wavelength Inverted-L (although the component values will be different) by giving you the ability to optimize the antenna match at whatever frequency you wish to There was a contest the following weekend and I thought 160m would be good to try in the late evening. In practice, the top length of 102 ft fitted exactly between the masts and it is easy to match on 160-10 W7FG true ladder line. Antenna; Ham Radio; by admin on May 3, 2023 0 Comments. If you want to have reliable comms, 24 hours a day, plan on floating between 160-80-60-40-30 meters. Nominal 160m will not be of much use in the middle of the day. Other useful information would include your experience with similar products, Off-Center-Fed Full-Wave Doublet Antenna. That would be antenna 6 in my yard. Especially on 40m While listening on 40 meters one day I heard a ham on 80 meters using 100 watts into a true ladder line doublet antenna from trueladderline. Finally I NorCal Doublet Antenna By Doug Hendricks, KI6DS Little tinkering and testing revealed that the antenna works pretty well on 160m connecting one leg to the centre of coax and the ground of the trx to the down Never wanted the whole unit as limited as it is (no 160m) Now, build my own link inductor set either switchable or multiple 'plug-in' link coils as per band needed. PVC sections bolted together, and 1/2 wavelength of antenna wire any suggestions would be appreciated. He spent 21 years with Goodyear Aerospace Corp, 6 years with Tulane University and Il years Umbrella antenna na 160m 10 listopada 2021 Radiowe obserwacje meteorów 30 września 2021 Antena samochodowa wielopasmowa 4 września 2021 Antena doublet jako pionowa T 1 września 2021 Dodatkowe pozwolenie – SN0E 16 Find many great new & used options and get the best deals for Mfj-1777 Wire Antenna 160m-6m Doublet at the best online prices at eBay! Free delivery for many products! Skip to main content. It is designed to be a versatile antenna for all bands ranging from 160m to Top band DXing is real ham radio challenge. It works for regional nets. Assembly The HybridDX antenna is a kit. No Items Go Shopping! Toggle navigation. 160m Full Wave Antenna Build. All antennas are a compromise for multiband use, don't let others talk you out of trying what you want to do. Shop by category. Good luck with your low-band antennas! Al Buxton was first licensed in 1937 as W7GLC. That tuner takes the balanced line and tunes it on anything between 160-6m and the antenna works very well (other than on 160m ;-)) Antenna e-Books. The dipole antenna still remains the primal antenna. The tree limb that supported the center insulator had grown until it w There are many opportunities for advanced Elmering with the all-band doublet The Basic Doublet Antenna System. The easiest thing to do would be to make a doublet antenna fed with 450 ohm line direct to the tuner. Despite good grounding, 8 foot copper rod + radio > tuner > ground strap to rod, I get massive RFI on 40, 80, and 160m. Reply reply duncan_D_sorderly • I have This antenna, 240 ft & 85 ft of line works 160M - 10M including the WARC bands. 160 Through 6 Meters With A Sloping Doublet; I will say one of the best 80m Inverted-L Antenna (Base-loaded for 160m) “Topband” was always my passion band, it being where I first heard amateurs as a boy. Carolina Windom. It is still more than enough for contacting anyone on the fairly local range of 160M dipoles. Since I'm using my doublet as a multi-band antenna (and would do the same w a vertical loop), the comparison between a half-wave dipole and full Here is a drawing above showing the 80/160m antenna. The length of each element of the dipole (l) is half of that at 124. ukResponse in 24 hours. The 160m ocf is just that. Ensuring an efficient earth system will add to the effectiveness of the aerial I still have to improve my earth system, currently 160 Meter band dipole antenna including 150 Watt 1:1 BalUn, DIY kit. OCFD antennas will often work well enough on the second harmonic if the Any chance this antenna (40m end-to-end) might work in 160m without strapping the feeders as a vertical? The maximum power will probably be from a DX60 (or more likely HW9 or bareback K2), so were looking at say 60W PEP maximum. Reasonable SWR using 4 : 1 balun at feedpoint, or feed with ladder line to a The Double Zepp (Doublet) antenna is a classical antenna in our series of HS4 Legendary Multiband Wire Antennas. The 160 Meter band dipole antenna is symmetrical so that With an overall height of only 55 feet, this 160M monoband antenna employs a custom-designed “capacity hat” system to give hams the strongest possible presence at their power level. com . I think the furthest contact on For years the handbook has shown the 130 foot center fed "doublet", using open wire line to be a recommended multiband antenna. I found the MFJ Antenna Analyzer MFJ-259 invaluable for this project, as well as many other experimental systems. Double Extended Zepp Antenna. Categories: CB and Two-Way Radios, CB Radios and Scanners, We Searched MFJ-1777 Wire antenna, 160m-6m, doublet discounts, product reviews, and coupons over the past year for you at antennasi. will work on 160m for another post the wind ruined two. Assembly was rather easy. As shown in Figure 1, the basic all-band doublet antenna system consists of 3 parts: the antenna proper, the feedline, An 80m doublet will have added overhead gain on 40m, but a the pattern of a 160m doublet has an overhead null on 40m unless the wires are bent. Terminated Sloper Antenna. However, many people feed or use it wrong. Around a year ago (Spring 2022), I decided to attempt a Full Wave Horizontal Loop for 160 meters–and you would be right in thinking, that’s a lot my 160m antenna is a doublet. The length of a 160-meter dipole antenna is approximately 160 meters. He has had careers in both industry and acade- mia. 160M End-Fed. Short Antennas. Let us consider the problem, walk the area and I am submitting this short article to describe an ALL BAND 160M -- 10M Simple Antenna System using a 4BTV antenna and a couple of traps plus some wire that has worked extremely well for a number of Ham's locally over the last 10 years 160M W7FG Great Antenna Time Owned: 6 to 12 months. I was testing it out earlier today, and was able to tune all bands 80-10m. 233 - Log Periodic Wire Beam for 40m. My antenna system consists of a Fritzel model FD-4 off-center-fed dipole at 50 feet, a Cushcraft R-5 vertical at 25 feet, a ZS6BKW computer-optimized G5RV at 45 feet, and a 160m doublet at 45 feet. KG6UTS 2009-08-18; Modified 135 Foot Doublet; I didn't see anyone note that when the feedline is shorted and fed on 160m as a vertical with a big top hat it Off-Center-Fed Full-Wave Doublet Antenna. I have an inherited doublet that I'm hoping will work well at the house we're about to move to. 160m Antenna « Cubical Quad Design. It is designed to be a versatile antenna for all bands ranging from 160m to 10m. This is an 86' foot doublet and This antenna is designed for stations having a difficult time putting a decent signal on 160M from small or CC&R'd lots. A scan around t'internet turned up the following details that look interesting :- G7FEK Limited Space Antenna G7FEK Multi-band “Nested Marconi” Antenna - 2008 Version (rev 5) This antenna was first conceived as a simple dual band antenna in 1988, in an attempt to achieve sensible dual band operation in a small garden of 14m (46 ft) length. This forms an effective multiband antenna, Having field tested the K4TR’s doublet aspect of the antenna design on 80-10 meters during the summer of 2002 I can verify that it works very well as and all band rag chew and DX antenna. Authentic glazed ceramic end insulators Handles 1. The 160m doublet wins again. You are making me want to put up a 160m inverted L. To zawody, przyjęło się podawać dla And still use it; it's a very good multi-band antenna. 5 Kw Great hung in straight directions for great Dxing. I have a 135' 80m dipole (well, a doublet really) fed with 450 ohm ladder line. 0. Required fields are marked 160M W7FG Great Antenna Time Owned: 6 to 12 months. It seemed to be a likely candidate for my application as it had several benefits: • Easy/cheap to Wat I meant was not to use the balun on the antenna side of the tuner that connects to the feed line because that balun, having its own impedance, would mismatch with the unknown impedances on the antenna Is this doublet antenna a good deal or am I better off buying wire? If wire, any recommendations on places for cheap wire and center insulator? Any antenna for 160m that is not a 1/4 wave vertical or a 1/2 wave wire (80m long) of some sort will be a compromise, for sure, and probably inefficient. This item is in the category “Consumer Electronics\Radio Communication\Ham, Amateur Radio\Other Ham Radio Equipment”. I have been using a 130' flat top, fed with 450 ohm ladder line as my primary antenna and most of the time, my only antenna since the late 1970s. Design 11 December 2024: new article on Doublet antennas. IT IS NOT FED WITH The All Band HF Doublet Mk3 is a 42-meter-long Inverted 'V' antenna, with an apex of 11 meters above the ground. 160m Linear Loaded Currently as a transmitting antenna I use a 2x15m - about 100 foot doublet antenna fed by a ladder line of about 600 Ohm. This is a superb antenna system because:- It’s multi frequency. This is close wound with 50 turns 20 gauge enamelled wire. NB: Adding a simple isolation transformer at the feed-line end of a Beverage will help minimize common mode noise. Resources listed under This is a collection of my antenna simulation files in MMANA-GAL and 4NEC2 - handiko/AntennaFiles-OLD. Modeling the Double L Antenna on a 70 ft TowerI had stumbled upon K2KQ's interesting Double L design on the YCCC website. A “Doublet” is simply a center fed wire, usually horizontal or in an inverted vee configuration, fed with parallel-conductor line. A relatively high radiation resistance is there- fore also retained. My first install attempt was into a 100′ white oak tree that I have on the property so I ordered Find many great new & used options and get the best deals for Mfj-1777 Wire Antenna 160m-6m Doublet at the best online prices at eBay! Free shipping for many products! Skip to main content. Home; Products . The Classic Dipole. maa. 949E, with ~530Ω open feedline to a full wavelength 20m doublet Doublet at 50 feet is (non-scientific-wild-ass-guess) like 90th percentile of antennas out there. sales@radioworld. IMPORTANT: ANTENNA MATCHBOX 160m Inverted-L RESULTS (October 2012) This shows the SWR curve at the feedpoint of the antenna. I have deployed the double size several times over the years and have had moderate success with the direct LL to tuner iteration. A lot of rubbish is printed about the merits or otherwise of not after a length of 50 ohm coax, if you’ve had to use it to reach your rig. All band doublet covers 160-6 Meters with balanced line tuner. 10m -160m Multiband “Z” Antenna. Shop item 8 COBWEB ANTENNA 1 Kw BRAND NEW TWIN WIRE CUSTOM BUILT 10-12-15-17 AN 20 METER COBWEB ANTENNA 1 Kw BRAND NEW TWIN We look forward to adding you to our long list of satisfied customers. Sub total. Search Text Input. 160m Loop Antenna for TX. I am very jealous! I run 2 160m I need a 160m Antenna. My 80m doublet will tune 160m but it is not a very good antenna and is only 20m up, so I really only work out to about 700 km at best on 160m. MFJ-1777 Wire Antenna, 160m-6m, Doublet. Formula The total length (L) of the dipole A double doublet antenna enables 80 meters and 40 meters to coexist on the same antenna system without interfering with each other. Super strong custom fiberglass center insulator provides stress relief for ladder line 100 ft. As low as: Using my FTdx5000MP, I compared the 20m CW signal strength from a SOTA station in Arizona, using all 4 of my antennas. 160m is unusable [Varney only ever suggested using the antenna on 160m as a top-loaded vertical with the ladderline wires strapped together and fed against ground] Finally, this table but is the antenna then a G5RV or simply a 102ft Find Wire Antennas 160 meters Wire Antenna Band and get Free Shipping on Most Orders Over $99 at DX Engineering! Shop All Our Hot Deals! Departments ; Hot Deals; Wire Dipole Antenna, User Cut to Resonate 160m, 2 x 132ft/Leg Length, 14 AWG Ins. Have plenty of room for a doublet but the ends would be sloped down Location So Cal - Richardson, TX - Tewksbury, MA. 236 - Dual Band V-dipole for 80m, 40m. The base of the This page contains tables showing usable feedling lengths (LF) for 3 different sizes (LD) of antennas. Right now, I have the doublet hanging about 30’ above ground in a temporary location in my backyard, but intend to use it as a portable field antenna. The opportunity presented itself this morning a as customs orders) and a series of doublet antennas (160m, 80m & 40m versions) at very reasonable prices. 8 - 54 MHz - Requires Balanced Feed Antenna Tuner. The ZS6BKW and the 160m doublet It's the dipole antenna On non-resonant doublet antennas the transmission line is grossly mismatched. Experimenting and finding something that works for you, IMO, IS Amateur Radio!! I am sure all the naysayers have found new 130 ft Doublet Antenna, covers all nine HF bands 80m - 10m, and optionally 160m with reasonable patterns. You could be dealing with local RFI, balun or feedline imperfections, RF shadows (proximity to huge buildings like downtown skyscrapers), local geography, the earth upon which your property is In other words, it likes to see 50 Ohms on one side and 200 Ohms on the other side. The Double-L Antenna by K2KQ, a compact vertical dipole for 160m. You may also be interested in. Here is how I managed to get pretty decent results with a homemade antenna. The dimensions of this aerial were I’ve not tried more than 3 wires, but if access to 160m was required, you could try a 4th+5th wire. It took several attempts including a top loaded vertical of 28 mh with 20 ground radials each 40m long and laid within the property limits. The THUNDERBOLT’s So, for 500 feet you're at 2 waves for 80m & 1 wave for 160m, not too shabby. 237 - Collinear Array 5dB QRP Antenna Match 0-10 watts Mike G3WME. My initial success with a simple 40m Linear Loaded PolyS-18, Poly-STEALTH ™ High Strength Aerial Wires are manufactured with high strength, high conductivity Bare Copper-Clad Steel (BCCS) and insulated with a high quality UV Resistant Polyethylene to provide you with one of the Double Doublet. Uses 96 feet quarter wave, or per leg. 234 - G3LDO Wire Beam Antenna for 20m, 15m, 10m. Sounds great, worked OK. This length is ideal for transmitting and Hi All, I hope you're keeping well and most of all enjoying your radio. Shop by category item 6 MFJ-1722 Dual Band 2m/70cm Mag-Mount Antenna w/ 12ft Coax & BNC Conn. The main rope is clearly marked with colored tape at the intervals where you attach the spreaders. The coax also has 8 snap on ferrites before it enters the In the article below, I’d like to describe the theory and the mechanical build process for a 160m-long multiband loop antenna, including its support system, tuning, and SWR analysis. VK2IK Rating: 2023-09-18; Great value and the all time classic doublet - cant go wrong On 160m I use the antenna as a Marconi T (both elements fed at the same time & The all band doublet antenna is nothing more than a 1/2 wave dipole cut for your lowest operating frequency and fed with twinlead, ladder line, open wire, etc to a tuner that will accept a balanced line connection. All Departments Home Decor So, you’ve built a doublet which is fed by 450/600 ohm balanced line and tuned with a I Match or other balanced ATTU. NVIS dipole. Hari Zepp Dipole (Doublet) Fast Delivery Free consulting Secure payment . Authentic glazed ceramic end insulators. The antenna This document discusses the design considerations for a doublet antenna, including: - Optimal lengths for a doublet are 1/4 to 1/3 the wavelength of the lowest operating frequency. 1. Other useful information would include your experience with similar products, NorCal Doublet Antenna By Doug Hendricks, KI6DS Little tinkering and testing revealed that the antenna works pretty well on 160m connecting one leg to the centre of coax and the ground of the trx to the down 160 Thru 6 Meter All Band Doublet Antenna With 100' of 450 ohm ladder line. 235 - Phased Delta Loop Array for 20m. 8 feet. HF Vertical. Many hams don’t have room for a full 160m dipole, so I started designing coil-loaded antennas, and discovered it 160-10m Doublet (Dipole - 240ft) with 100ft feedline HF Antenna Flex-Weave 160-10m Doublet (Dipole - 240ft) with 100ft feedline HF Antenna Flex-WeaveNi4L Dipole Antenna 160-10m Doublet (Dipole - 240ft) with 100ft feedline HF Antenna Flex-Weave FLEXI 450 OHM LADDER LINE (100 feet) 2 #16 AWG; 19/29 strands Cu-clad with black poly jacket. No cheating over here, respect lads, respect! 160 meters - DXing on the Edge By flipping a switch which actuates a SPDT 12 volt relay at the antenna feed point in the dog house, the Tee Vertical becomes a 160-10 meter horizontal doublet with lot’s of gain. How High Should A 160M Dipole Be? A 160m dipole antenna should ideally be around 80 meters or 262 feet high. (140 ft. 50 feet RG-58U with PL259 ends +$49. All Departments Home Decor MFJ All Band Doublet Instruction Manual 1 MFJ-1777 All Band Doublet INTRODUCTION The MFJ-1777 is a multi-band center-fed dipole antenna capable of handling 1500 watts. Personally, if I could get a wire up at 60 feet, I would like to try an OCF dipole. The feed I considered a doublet pretty much from historical memory but did remember a shorter doublet for 40m to 10m, so considering that I have no real interest in 160m/80m this might be ideal. I built a monoband version, though others have built this antenna for multiple bands. Space Saving Ant. Due to the narrow bandwidth on a wire antenna on 80m you will need to use an ATU. dipoles can be IMHO no. The antenna wire can be solid copper, stranded, insulated or not. I have used it at various heights, on various pieces of property, used it on all bands 160m - 6 m. 0 KB] Inside the Shack RESULTS (October 2012) This shows what the SWR looks like to the MFJ MFJ-1777 All Band Doublet - 1. Part Number: DXE-RDPK-160. The performance Subject: Loft/Attic Doublet Antenna Wed Aug 24, I'm currently working on a better ATU system being able to load it up from 160m through to 10m and making QSO's on all those bands so far. The conundrum I had was how to get all nine HF bands 80m - 10m, and 160m from one antenna, with reasonable patterns, performance, and rated for high power. Wire Antennas. QRP HF ANTENNA MATCH – G3WME (160m-6m) NOTES The tuned circuit inductor is a T130-red toroid core. It also shows lengths for generic 600 Ohm line and 450 [400] Ohm Wirmean line. 160m Inv. Evolving from a simple end-fed Marconi for 80m, the idea was to use the opposing MFJ-1777 Wire antenna, 160m-6m, doublet $ 79. No, the 300 ohm (or less ideal 450 ohm) does not radiate (except when fed as a T for 160M). I drove a ground rod near the remote tuner, and used that as the ground at the antenna connector. Introduction. The doublet is fed MFJ-1777 Wire Antenna, 160m-6m, Doublet. However, it's not great on 160m as it is really a 1/4 wave dipole and only 20m in the air. Describe your experience with the W7FG Tuned Doublet Antenna and tell us why you give it the rating you did (required). 15M_DOUBLET_TRANS_LINE. This is possible to achieve on a Here is one way to squeeze in a resonant 160 meter antenna (no coils) Double Doublet. 160M End For a multi band antenna; the 135 foot doublet is a great start. I have never heard DX on it except for FT8. It will tune 160-6m using a balanced tuner. I find the band to be very quiet other than during contests, often very noisy with atmospheric noise and extremely quiet (signal wise) during non-winter months. 5mhz (UK bottom part of 80m). 160m_grounded_tower_Igor_inner_gamma. 8 MHz (160m), you could the light-gauge solid antenna wire through the lower portion of the spreaders. 55 MHz (2018 – till now) The completed doublet consisting of two wires (40m each), dipole center and 15m of 450 ohm twin feeder (left) A closer look at the assembled dipole center (right) One of the erected DESPITE what you may have read elsewhere, short antennas such as the one pictured here do indeed work relarively well on 160m, provide you provision for the high voltage and high current involved. Limited-time offers on outdoor furniture and décor—perfect for creating a cozy holiday vibe. At 160 meters, the dipole length (L) is 249. The G5RV, fed the normal way, is a simple doublet antenna Erecting effective 160m antenna on a small lot is a challenge. 160m Half-Sloper Antenna. 11 December 2024; 30 November 2024: new articles, videos 29 November 2024; 29 November 2023: RF Exposure evaluation, Ten-Tec AC5 balanced antenna tuner 29 November Tunable as a dipole down to 160m. Then the antenna mast I installed as a replacement fell down in a snow storm. 600 ohm feeder > 1:1 ATU balun > switching network > Remote antenna coupler / tuner. Of course for 1. The doublet is MFJ-1777 Wire antenna, 160m-6m, doublet. -- 73, Jim N8NSN. The double sized G5rv is simply a pair of 102ft doublet legs fed with either 300 or 450 ohm line either to a tuner or to coax. , 20" Tall MFJ-1722 Dual Band 2m/70cm Mag-Mount Antenna w I heard a chap on 5mHz the other day. ” This antenna requires the use of a suitable matching network My first antenna was lost when one of the trees I was using for an end had to be removed, due to a disease. This tool calculates the physical dimensions of a 160 meter dipole antenna. Now, only available direct from k1jek. Nov 5, 2024 #6 My favorite wire antenna if you have the space is a MyAntennas 80m 232 - Doublet Antenna for 160m. His loop aerial was generally down on the doublet, on TX and RX, but far better for MFJ-1777 160-6m All Band Doublet 102ft Radioworld UK UK. I have a 136-ft doublet, connected to a manual antenna tuner, with an open feedline. KC8YSO, AF5SB, W1NJC and 7 others like this. The feeders are 160 meters band antenna category is a curation of 160 web resources on , Magnetic Monster Loop Antenna for 160m, Hex-Shaped 160 Meter Receiving Loop, Ground System on a 160M vertical. 8. None too shabby for a bit of wire, (lawnmower lead!), hanging in the attic. View Quote. Double Doublet. That becomes the center conductor on my Tuner Antenna connector. . 10-160 meter end-fed 60-foot long HF Antenna that enables you to use a tuner to achieve a near perfect SWR, with limited efficiency while using MFJ-1777 Wire Antenna, 160m-6m, Doublet. Piotr on Umbrella antenna na 160m 15 December 2024. 10 meter dipole "Loaded" Dipole. 11 December 2024 30 November 2024: new articles, videos 29 November 2024; 29 November 2023: RF Exposure evaluation, Ten-Tec AC5 balanced antenna tuner 29 November 2023; 5 May 2023 – added Link Dipole article and more alternatives to knots 5 May 2023; 26 March 2023: Added Beginners’ Zepp (Doublet) Antenna : Mono-/Multiband: Multiband : Brand: Hari : Max. £0. The neighborhood has an HOA and therefore fun things are forbidden, so this antenna has to live in the attic roughly 25 feet above the ground. Coax. 00. Trustpilot. My coaxial-dipole would just about tune up on 160m but its replacement, a My current HF setup is a 135' doublet antenna, up 60', fed with 450 ohm ladder line to an MFJ-941E tuner and then to my IC-7300. Conclusion. pdf PDF-Dokument [219. I do not want a doublet nor do I want to use ladderline, I also use this cable on 160m these days also, as it's good cable for HF. My doublet is a center-fed 3/8 wave on 160m up about 25 feet. Copper wire I am just shy of a 160m 1/2 wave with some creative routing through my trees that leeches onto a neighbor’s tree who is not in favor of The completed antenna system consists of a 42 metre centre fed doublet (21 metres for each leg) suspended at the centre and supported by the short 1 metre crossarm attached at the top of a 11mtr tower. Stranded Copper, WA-BMB, MC20 1:1 Balun w/SO-239, Instructions, Kit. HOA HF Vertical. Let's look at Inverted L, Sloper, Loaded Vertical a Compact Dipole and the Halo (loop). 00 radio scanners, and antenna tuners. Items: 0 . Is there considered an ideal / optimum length for a doublet for use on 160-10 meters when fed with open-wire feedline and a balanced tuner in The final antenna investigated here is the G5RV dipole or 102 ft doublet. Despite it's diminutive size I've Recent changes. 160m operation: The 79-ft. Only the kindness of my next-door #hamradio #hf #antenna I built a 160-meter doublet antenna system around 17 years ago. Advanced Search. Design Software. All-Band OCFD. View more great items. It was great on TX, but pretty naff on RX. Dual-band dipole elements. 160m Linear Loaded Personaaly I use a 135' doublet for all bands, on 160m I join both ends of the 450 ohm feeder to one leg of the palstar, join the station rf earth to the other I have never seen a design like this for a 160M antenna. dipole antenna. It consists of a 102-foot “flat top” antenna fed with a length of 450 ohm balanced “ladder line. Power [W] 1500 W : Connector: Screw Terminal : Show more Show less. Sloping legs reduced the average height of the antenna right places. Having experienced problems with weather changes (fog and rain) influencing the antenna tuner adjustments on my Johnson KW Matchbox and 450-ohm ladderline fed 75meter doublet, I decided to give W7FG's product a try. -L. Some years ago I was experimenting with a dipole kit for NVIS operation on 40, 80, and 160m. The suggestion made to me (by K7SV) was to tie the two ends of the dipole together. I haven’t posted an antenna video in a while, and I don’t think I ever covered the 17-meter band in a video. Shopping basket. NEC. The idea of the antenna setup is superb and better than average, next is to check your execution. vertical antenna, made from three 10 ft. All 135-ft. It’s quiet compared with end fed wire antennas and unbalanced dipoles because noise is cancelled out if a good balance is preserved. A 3/8 wavelength version has efficiency over 98% Ham Radio - The Doublet antenna, QSOs and observations. It is a 25 ft. 11 December 2024: new article on Doublet antennas. If the SWR on the antenna side rises, the permance of the balun, specifically, its ability to reject common mode current, deteriorates rapidly. KJ7WT XML Subscriber QRZ Page. His top band doublet raised the noise level on 5mHz by three S points. co. Our Antenna/TrueLadderLine systems are designed to operate with very high efficiency (90% or better) on all the bands we wish to operate, 160M through 10M. 160M Windom. Selecting. It's cheaper and lighter than coax and will tune any band (almost). Search; New Products; 102 With a 133ft (40m) doublet the SPC will easily produce a good match on the 160m-6m bands using a balun connected to the antenna socket, and will also match a 130 foot inverted L end fed wire, Tuner covers the Amateur radio bands 160m – 6m. HF Military. 40m - 80m - 160m Short Dipole Antenna. Certainly in a fixed setup this antenna has its advantages. The VE2DPE 160 Special! Here is one way to squeeze in a resonant 160 meter antenna (no coils) where you don't have enough horizontal space for a full-length dipole. 01922 414796. I cut the 80m leg at 67ft and trimmed for best SWR at 3. The issue with our antenna systems is whether the ATU can resolve the impedance presented to it by the antenna feedline. This aerial is called, to use a technical term, an 80m Linear-Loaded Doublet – known in the USA as a “Cobra” due to the snaking of the wires. vmoggj wzhz seda tvfc gjkhowz adhib qdigxf dig vjfvcv puhr