A series of a new type of half wave dipoles which behave like a normal center fed dipole.
In contrast to the most end-fed antennas, MMD don't use a high impedance and frequency dependant matching network. These antennas are physically fed on one end, but electrically they are center fed like a normal dipole. So they behave like a normal center fed half wave dipole: easy to tune, feed point with low impedance, undisturbed diagram. Without the narrow band matching network these MMD antennas are also excellent for receiving purposes.
The antennas will be available for all bands (10 to 80m) by the end of 2009. Shipment includes matching transformer and 5.5m coaxial cable with BNC connector. With it's low weight these kind of antennas are excellent for portable use: radiator and coax feed are made from RG-174 cable. Very popular is the MMD-17 for 17m, which works on 17m without any tuner (of course), but can be tuned from 10 to 20m with the built in tuner of most radios.
The MMD-30 can be used with a tuner from 10 to 40m. Of course these antennas can be installed as Inverted-V or vertical antenna. The max. power load is 100W.
| Order No. | |||||
|---|---|---|---|---|---|
| 11455.17 | MMD-17 Length 9m, Weight 230 Gr. | 122.57 (119.00) EUR | Buy now | ||
| 11455.20 | MMD-20 Length 10m, Weight 250 Gr. | 122.57 (119.00) EUR | Buy now | ||
| 11455.30 | MMD-30 Length 15m, Weight 320 Gr. | 122.57 (119.00) EUR | Buy now |
Ideally for the new (german) entry class license - a new threeband dipole for use on three of the four assigned bands for German license calls "E". This antenna helps with getting your feet wet on shortwave with minimal investments.
The antenna has four traps and is similiar to a W3DZZ design. The wire is made of strong, plastic (PVC) coated steel braid. Length of antenna approx. 35m and come complete assembled incl. balun, weight 1.2kg. Max. power is 200W SSB/CW. Can also be mounted as Inverted Vee. Connector is a PL jack (female) on the balun.
Similiar to W-815, but for all 4 bands allowed to German class "E": 160/80/15/10m.
Length approx. 45m, includes Balun, max 200" SSB/SW.
The antenna weighs approx. 2.5kg. When the antenna is supported only at the ends the pull forces can become very high. Therefore it is recommended to install this dipole as an inverted Vee (supported from the middle) or to install an additional support in the middle as well.
The bandwidth of this antenna on 80m is approx. 150-200 kHz (SWR < 2), on 160m it's about 40-50 kHz; to use the entire 160m band a tuner is required.
Shortened 5 band double dipole for 10, 15, 20, 40 80m. Total length 19.2m makes it suitable for smaller spaces. Each band can be adjusted individually. Includes all traps and insulators as well as a wideband balun BU-50, connector PL. Max. power load 1200 PEP, weight 2.5 kg.
Shortened dual band dipole for 80 and 40m. Length 26m, includes balun BU-50, weight 1.9kg.
Clever antenna for all bands 80 to 10m (or 40 to 10m, or 160 to 10m), consist of a 31m long dipole which is fed with a 10m long parallel feed line. At the end of the parallel feed any length of coax can be used (balun version required).
SWR on amateur bands is between 1:1 and 1:4, so a tuner is required. The internal tuners of many radios are usually sufficient. Works with reduced efficiency also on WARC bands.
Max. power load 1KW SSB/CW, come complete with parallel wire fed, PVBC coated antenna wire.
If you have the space the G5RV (40m or 80m version) can be used in conjunction with our fibre glass mast 18330. Just hang one side (the hot side) of the antenna down that mast, the other (cold) side is used as a radial. The ladder feedline is also fed sideways, like a second radial.
| Order No. | Article | Bands | Length | Length feedline | Balun | Price |
| 11388 | G5RV 6-Band | 160-10m | 63m | 19,50m | without | 106.71 (103.60) EUR |
| 11385 | G5RV 5-Band | 80-10m | 31m | 9,50m | without | 73.44 (71.30) EUR |
| 11385.01 | G5RV 5 Band | 80-10m | 31m | 9,5m | with | 100.94 (98.00) EUR |
| 11387 | G5RV 4-Band | 40-10m | 16m | 4,80m | without | 58.71 (57.00) EUR |
| 11387.01 | G5RV 4 Band | 40-10m | 16m lang | 4,80m | with | 80.34 (78.00) EUR |
Well renowned antenna for the harmonic bands 80, 40, 20, 17, 12 and 10m. Somewhat more bandwidth then a dipole, good SWR on all bands. At space restricted environments the antenna can be installed at an angle or non straight layout. Antenna wire of PVC coated steel wire. Includes balun 1:6, max, power load 200 Watt SSB/CW, connector PL. The balun is located at one third of the antenna length.
The windom antennas for 160-10m and 80-10m can be extended to work on 30/15m by adding two simple wires.
The length of the wires is 9,5m for the longer part and 4,8m for the shorter part, incl. the loops for the end isolators. The new wires are connected to the balun in parallel to the existing wires and should be installed as far apart from the existing wires. Either sloped to the bottom like an inverted Vee or to the sides, forming a crossed dipole.
Trap dipole for 80 and 40m. Length 34m, with sealed balun, connector PL, max. power load 200W SSB/CW.
Due to a very large L/C ratio the outer wires for 80m can be shortened much more than usual. The inner part for 40m remains unchanged, giving you full bandwidth. The price to pay for the shorter antenna is a limited bandwidth on 80m, approx. 110kHz at SWR < 1:2. So if you have limited space and if you can live with good SWR only on a part of the band this shortened W3DZZ is for you.
Otherwise the construction is the same as the usual W3DZZ. Total length 24,80m, optimal band center SWR is adjusted by changing the outer wire length. Steel wire with clear plastic coating
Shortened trap dipole fpr 10, 15, 20m. Length 8m, well suitable as a vacation antenna. Weight only 0.9kg, ideal companion to W3DZZ. Comes completely assembled, including sealed balun, connector PL, max. power load 200 Watt SSB/CW.
Shortened WARC dipole (12, 17, 30m), length 11m, weight 1.1kg, ideal companion to W-210 dipole. Comes completely assembled, including sealed balun, connector PL, max. power load 200 Watt SSB/CW.
Antenna with T2FD design: universal antennas for radio amateurs, shortwave listeners and commercial services. Very large bandwidth between 2 and 30MHz.
When installed straight these antennas have a directional pattern similiar to a dipole. Installed as inverted Vee a nearly omni directional pattern results. Includes balun, 50 Ω, connector PL, insulators and guy ropes.
WD-330J: Length 25m, 150W PEP, SWR 2-18 MHz: better than als 2:1, 18-30 MHz: better than 3:1.
WD-330S: Like WD-330J, but only 10m long.
Short wide-band antenna 2-30 MHz
Works with the same principle as the Diamond BB-7V vertical antenna.
The SWR above 3MHz depends on the surroundings and is 2:1 or better. On some bands a simple antenna tuner is required, the built-in tuners of most radio usually suffice. The antenna is a wide band antenna and works on all amateur bands and outside of them as well. Simple installation, no tuning required. COnnector PL female. Weight 0.8Kg. The BB-6W antenna is just 6.4m long and takes max. 250W PEP. Of course also useable as receive-only antenna which requires no tuner. Includes insulators and 2x 5m nylon rope.
Consists of PVC coated copper wire with 20 or 40m length, two insulators, all required hardware plus a MTFT magnetic balun in weatherproof case. Due to the balun the antenna can be fed with coax of any length. This reduces local interferences much better than with other end fed antennas. Max. power load 100 Watt.
For small portable dipoles without balun, consists of a center part with PL connector or for parallel ladder line, two insulators amd necessary hardware. Just tie the antenna wire (not included) to the center element, attach the feed line, fix the insulators and you're ready.
Center isolator for dipoles which are fed with symmetrical 450 Ω parallel wire. The strain relief is not done with the wire but with the form-fitting rectangular excavations.
Toroid baluns for wire antennas, sealed tightly in a weatherproof case, with solid hooks for wires. Connectors stainless steel, recessed PL connector.
Mini balun useful up to 120W PEP, weighs only 150 Gramm, ideal für QRP and portabel use. Not suitable for 100W FM!
Tightly sealed wideband balun. Data:
Replaces the usual center isolater. Due to the internal common mode filter all common mode current on the outer shield of the coiax are suppressed. Connector PL.
Useful to reduce common mode currents (and thereby reducing TVI/BCI) on coax feed lines. Much higher inductivity and better efficiency than a cable coil. Weatherproof sealed case, connector PL. Best used right at the antenna feed point.
Note:Max. power load is relative to use at 50 Ω systems. When used behind a tuner with higher voltages use model with higher power load.
Be on the air with just some meters of wire!
Can be used wit hreduced efiiciency up to 150 MHz
Principle of operation:
Usual internal tuners or external tuner only have a limited impedance range. The matching of a short wire (short in comparision to the wavelength) with it's high impedance is usually not possible.
Futher the wire is usually outdoors, the tuner sits in the shack, but the wire cannot be connectied to the tuner with a coax feed... Here a wire tuner like the SGC products will help - at a price!. But there is a more economic alternative.
The MTFT is a resistance transformer wit ha ratio of 1:10. It reduces the extremely high impedance of a short wrie to a range which can be matched with a normal tuner. The balun must be used right at the antenna wire, don't use coax to feed the wire. The MTFT is then connected with a coax to the tuner, the SWR on this line is usually below 3:1, losses through resonant waves are low.
The required wire length should be at least 6m. Ground connection is good, conenct ground with a clamp to the ground of the PL connector, not to the insulated case. If no ground can be used at the balun at least the transceiver should be grounded. If necessary use a common mode filter right below the balun. Instead of a ground connection a counterpoise can be used.
F6JSZ installed a 20m long windom, fed with the MTFT at one third from the end, 20m coax to the rig. He writes in french "CQ" that he had a SWR better then 1.5:1 on all amateur bands and didn't require a tuner.
But the MTFT cannot only be used with a wire but with any metallic object - water pipes, rain pipes or CB antennas (remove matching elemens of the antenna before use). The MTFT is an excellent tool for the experiemntal amateur...
Of course the MTFT can be used for transmission, max. power load is 100W PEP.
For shortwave listeners the MTFT is an ideal accessory: a simple wire connected to the world band receiver is very badly matched, resulting in only mediocre efficiency. With the MTFT the match is greatly improved. An additional matching unit is not required.
Model 11370 is not weatherproof, use additional cober when using outdoors.
New version of MTFT with three different transforming ratios for even more experimental fun. Including mast clamp, for max. mast diameter 60mm.
The EZ-HANG slingshot is the only quality steel constructed slingshot with a patented design. The unique EZ-HANG attaches a quality fishing reel in front, which enables the user to shoot a line 100 feet or more (both horizontally and vertically) with a
single shot!
The EZ-HANG shoots a 1 oz. bright yellow weight with a quick disconnect clip attached to 300 feet of 10-lb. test monofilament line. Once you make a shot, disconnect the weight and clip on the yellow nylon rope provided, reel it back, then pull up your antenna.
Comes with:
Highly flexible antenna wire, braided steel, with transparent PVC coating, 1.5mm² area, outer diameter 3mm.
Braided copper wire, PVC insulated, black or transparent. Lightweight, but less tensile strength as steel.
Ceramic insulator for wire antennas
61mm long, 25mm diameter, weight 60g, hole diameter 7mm.
Insulator for wire antennas, black plastic, UV resistant
For do-it-yourself parallel feedlines. Distance approx. 85mm, for wires with 1.5mm2 cross section. Pack of 50 pieces.
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