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Antennas

5 products

  • 8m High Performance RF Coax Cable

    PreppComm 8m High Performance RF Coax Cable

    Low Loss 8m (26 ¼ foot) Antenna Male to Female SMA Coax Cable This LMR-100 low loss coaxial cable is the big brother to the 3m cable that is a part of the Professional Station GO Bag outfit for a complete radio station in a portable 8 pound bag.  It connects from the DMX-40 or MMX Morse Code Transceiver output antenna connector to the 40/20M No-Tune End-Fed Antenna, also included in the GO Bag, and manufactured by PreppComm for low SWR across the entire 40/20M band. Replacement or Extend Length This high power coax cable can be used to replace a damaged or missing cable from a GO Bag system, or can also be used to extend the original cable length, if desired. Up to 2 cables can be daisy-chained, for a total length of over 52 feet with slightly increased loss of power to the antenna. Or, you can add this to your 3m cable and get about 36' of total length. Lengths longer than 40 feet require LMR-200 or LMR-400 to reduce power loss during transmit.

  • Adaptor Cable: SMA Male to SO-239 to PL-239 Adaptor Cable: SMA Male to SO-239 to PL-239

    PreppComm Adaptor Cable: SMA Male to SO-239 to PL-239

    Highest Quality Strain Relief Plus Connector Adaptor If you are using an existing antenna system, before you do, make sure the SWR is below 2:1 before connecting it to the MMX or DMX-40. This adaptor cable is designed to connect between the rear SMA female antenna connector on the MMX or DMX-40 and the standard antenna PL-239 plug. It also serves a second purpose, which is to reduce mechanical stress on both the PL-239 and its attachment to its likely stiff RF cable, and the very light and portable MMX with its PC-mounted SMA female connector. These cables are extremely well built, with multiple layers of sleeving to reduce the stress on the solder joints, in order to provide long life. At the SMA connector end, note the two-lawyer cable relief design. At the SO-239 end, a 3-layer cable relief design is used to compensate for the larger connector. In addition, a clear cap is provided to protect the internal surfaces of the connector when not in use. Keep an Extra on Hand! We suggest, at this low price, you consider purchasing two adaptors, as all of the stress caused by the heavy duty PL-239 connector and coax will be handled by this adaptor, and thus, depending on your use case, it is the most likely to fail first. Don't be without when that happens after a few years - have a spare handy!

  • NO TUNE 40/20 Meter End-Fed Antenna with Setup Kit NO TUNE 40/20 Meter End-Fed Antenna with Setup Kit

    PreppComm NO TUNE 40/20 Meter End-Fed Antenna with Setup Kit

    NO TUNE 40/20 Meter End-Fed Antenna with Unique Setup Kit Overview This is a very unique antenna designed initially for the Professional Ham Station GO Bag, and now extended to multi-band for MMX. It operates on both 40 meters and 20 meters, and does not need to be tuned. This is accomplished via a unique transformer in the antenna matchbox, but requires a counterpoise to operate correctly. The counterpoise wire is of course included as part of the antenna, and complete setup instructions for a sloper and inverted V configurations are included. The antenna is designed for temporary setup using the included setup kit, and is not intended for a permanent setup. It is a truly stealthy, lightweight, portable antenna.  However, we include in the setup kit tags (not shown in the images) and flags to use when stealth is not required, to prevent accidental damage to the antenna or persons running into the virtually invisible wire and paracord. And the antenna kit is packaged in a very handsome waterproof 14 oz heavy duty waterproof canvas zipper pouch, to keep everything together and for easy carrying and storage. Canvas color may vary. Note that each component is within its own ziplock bag inside the canvas bag, to keep things neat and organized. The Antenna The antenna itself is designed around information documented by AA5TB in his extensive review of end fed antennas with and without counterpoise wires. As far as we know, our design is unique, and utilizes a fascinating point on the curve where the antenna becomes nearly pure resistive as a load, and thus, is radiating nearly all of the applied power into the atmosphere. It operates well in several configurations, but the easiest to set up are the two mentioned above, sloper and inverted-v. Extensive instructions for setup and takedown are included with the kit in a plastic document folder, and the PDF file is here if you want to print it in another format. The antenna consists of two PolyStealth AWG 26 wires - one, the antenna main wire, and the other, the required counterpoise. The PolyStealth wire is copper-coated steal multiple strand wire, coated with a black anti-UV and anti-reflective coating.  It is extremely difficult to see even when you know where it is! Thus, the included tags and flags. The Setup Kit This is a totally unique kit. The goal was to provide a way to quickly set up the antenna without cutting or tying knots, so it would be easy to take down, store, and use again. This is not as easy to achieve as it sounds! We had 3 or 4 forays into the field to test different approaches before we finally found the combination that met our goals. Finding the right components was a very time-consuming process, as well. Included are two spools with 1.18 mm black paracord - 30' on one, and 15' on the other. These are used for "guy" cables for the two described configurations. In addition, a spool hanger is provided for the inverted V configuration, to prevent the antenna wire from coming in contact with the supporting tree limb or other support, which would seriously detune and reduce efficiency of the antenna. Also included is a lead weight with carabiner to attach to the 30' or 15' length of paracord for throwing over a tree limb during the setup process. This step must be done carefully, watching out for possible bounce-backs or hitting another person standing on the other side of the support. There are 3 ground stakes to support the two antenna configurations, as well as 3 flags to place where the ground stakes are located, to prevent damage by accidentally tripping over the stakes and attached wire or paracord. Finally, there are tags that can be attached via a clip to the paracord or antenna to men it visible to anyone walking or running in the vicinity. Of course you would not use these in a true stealth situation.  The Application This antenna and setup kit were designed specifically for QRP rapid deployment and extraction, for use such as POTA, Field Day, and portable operation. Thus, the antenna and setup kit are lightweight, and stealth when needed. The heaviest item is the lead sinker used as the throw weight. While a local rock can be used as a weight, it is hard to attach a carabiner to a rock! Thus, we include it in the package. The zipper 14 oz heavy duty waterproof canvas pouch is 13.3" x 9.4" and weighs a mere 1.6 pounds fully loaded with the antenna and setup kit. Also included Also included in the package are two additional cables, to attach the antenna to your MMX or DMX transceiver.  One is a 3 meter (9.6 feet) SMA male to female LMR-100 cable, and the second is a 8 meter (26 feet) SMA male to female LMR-200 cable. These cables can be combined for a total of 13 meters, or about 37 feet length. All you need to go on the air is a QRP transceiver, such as the MMX Multi-Band Morse Transceiver. For power, consider the SuperPower Solar Battery System.

    $249.00

  • Antenna Wire Winder

    PreppComm Antenna Wire Winder

    Great Antenna Wire Winder This is the antenna winder we use to wrap our 40M NO Tune end-Fed antenna, supplied with our GO Bag products for low SWR across the entire 40 meter band.  It is printed with PETG blue plastic, and is very durable.  It can be used to wind your own antenna, or wind any wire.  Only .093 Lb, very lightweight, with a place to hold the winder as you unwind or wind your wire.  The shipping is a single cost for up to 16, not "per unit."

  • 3m High Performance RF Coax Cable

    PreppComm 3m High Performance RF Coax Cable

    Low Loss 3m (9.8') Antenna Male to Female SMA Coax Cable This LMR-100 low loss coaxial cable is part of the Professional Station GO Bag outfit for a complete radio station in a portable 8 pound bag.  It connects from the DMX-40 or MMX Morse Code Transceiver output antenna connector to the 40/20M No-Tune End-Fed Antenna, also included in the GO Bag, and manufactured by PreppComm for low SWR across the entire 40/20M band. Replacement or Extend Length The cable can be used to replace a damaged or missing cable from a GO Bag system, or can also be used to extend the original cable length, if desired.  Up to 4 cables can be daisy-chained, for a total length of almost 40 feet.  Beyond 40 feet, LMR-200 is recommended to reduce power loss during transmit.

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