4.1 out of 5 stars 39. EZNEC file for the W0BTU version, which uses a 97 straight top section, a 39.5 (or 31; see below) length of "450 ohm" (usually . Shop Our Amazon Store: https://www.amazon.com/shop/iridium242 Stock up on your long term food storage here! The near vertical portion of wire (20 ft) from the attic shortwave antenna to the receiver could pick up vertically polarized electrostatic interference! Aug 15, 2008. Part Number: DWA-CS-201GII. #13. If using coax use the shield as a randomly route long wire. . Of course, more expensive. I am new to shortwave radio and just thought I'd share my experiences in starting with this hobby. Waterproof the connections. Given a ground plane the outer conductor of coax measured to 1/4 wavelength of the frequency can make a good transmitting antenna. You can use these cables with a 50 Ohm amateur radio . You'll need a good antenna to do that, which is where this homebrew loop antenna for the shortwave radio bands shines. $15.99 $ 15 . Shortwave, AM, FM and Internet Radio. The cable must be 50 ohm. Short wave, Receiving, Scanner, FM Antennas Sort by: Featured Items Newest Items Bestselling Alphabetical: A to Z Alphabetical: Z to A Avg. Description. $68.89 $ 68. XHDATA AN-80 Shortwave Reel Antenna FM SW External Antenna Whip Antenna to Improve Signal Reception (XHDATA AN-80 Antenna = TECSUN AN03 Antenna + TECSUN AN05 Antenna) 4.1 out of 5 stars. . Technocrats will call this an Inverted L as the longer limb of the capital letter L is the bit that runs down the garden, the shorter . Coax Switch, 4-port, Rated Through 500 MHz, UHF Female, SO-239, Each. The CB band is only of a MHz. 4.6 out of 5 stars. -1. In case of question, please contact us by e-mail or by phone +49 5052 6052. Shortwave, AM, FM and Internet Radio. Currently I am able to run a 60' longwire, but the new place I will be going into restricts the erection of any kind of antennae outside the house and especially on the roof. Continued Shortwave Antennas Page 10 Shortwave Antennas Page 12 Universal Radio shortwave, amateur, scanner and CB radio since 1942 a ch: MP4C+XPH, Vit Chu, H Lang, Cao Bng, Vietnam S in thoi: Trang web: Gi m ca: Bn ch ng: 22.657429,106.72186699999999 (ta chnh xc) Antenna Coax Switch, 2-port, N Female, Each. Impedance mismatch of 75 Ohm Cable. 9.0. :drool: It worked really well down into the AM broadcast and longwave bands. Customer Review Price: Low to High Price: High to Low JTD2 1411 25-1300 Mhz Discone Type Antenna Mar 27, 2010. https://www.thrivelife.com/iridium242 5 meter RG-58 coaxial cable with male PL-259 plugs on both ends: If using more than 5 meters or if you want to use higher frequencies above 30MHz, use thicker, heavier and more expensive cables like RG-213. and best is LMR-400, usually used for transmit at higher frequencies. W5SWL Brand Premium Series Coax Adapter UHF Female to 3.5mm Male Plug. The ma. That is why you need a good coax cable with a high degree of shielding. Find Alpha Delta Antennas and get Free Shipping on Most Orders Over $99 at DX Engineering! AEcreative PL-259 SO-239 to 3.5mm RG-58 coaxial External Antenna Adapter for Grundig Tecsun Sangean Eton shortwave Radio Receiver RG-316. Shortwave, AM, FM and Internet Radio. Winds up into a sturdy case for portability. Estimated Ship Date: Monday 10/31/2022. For example, if you have 6 db of feedline loss, your 50 watt signal coming out of the radio will be 12.5 watts as it enters the feedpoint of the antenna. Australia. $18.99. FREE . Strip back a half or 3/4 in of other end of coax. #10. 481. Wide from beginning to end. A Magnetic Loop Antenna for Shortwave Listening (SWL) by KR1ST - A well documented plan to build a magnetic loop antenna for Shortwave Listening, includes photos and diagrams. DIYOO 2.4 Inch Screen Stereo Sound Shortwave Longwave with Telescopic . The best shortwave antenna I ever had was a 660 foot long wire about 20 feet high. The Traditional Long-Wire Antenna, as its name implies, is a simple single length of wire of a thickness strong enough to support its own weight, insulated or not, as long and high as the local geography allows. Better is RG-213, RG-8X. Get it Sep 8 - 12. Add a comment. W. I will be moving into a retirement village as soon as we sell our house. The length of the antenna needs to agree with the length of the longest radio waves that you want to receive. 1 offer from $15.90. redneckerson_1951 2 yr. ago. (UNUN stands for unbalanced coaxial line to unbalanced antenna). 9.6. Ships from and sold by AEcreative. Share. This item: AEcreative PL-259 SO-239 to 3.5mm RG-58 coaxial External Antenna Adapter for Grundig Tecsun Sangean Eton shortwave Radio Receiver RG-316. Down there I could pull out little 1 and 5 Kw stations in Central America.On 20m it started to show some gain and worked quite well with 100 watts into Japan on . They also have an impedance of 75 ohms, which is a standard for coax cable used in the broadcast industry. Shortwave Antenna restrictions. Multiple Images; View; tune-in a broadcast station within the frequency coverage range of your antenna (mine covers 2.3 to 7.6 MHz). 8 offers from $13.15. 9.5. 468 divided by 5.90 = 79' 3". K-180WLA Active Loop Broadband Receiving Antenna 100kHz-180MHz 20dBi SDR Radio Antenna Loop Small Loop Short Wave Antenna. The W0BTU Antenna. Shortwave broadcasters use frequencies that are from about 50 to about 400 feet long, and an effective antenna needs to be at least one-fourth of that length and one-half is much better. Answer (1 of 4): Pretty much any, practically speaking. This first video is by a beginner for beginners! Dennis Walter. 3. The number 468 divided by the frequency above is the formula for calculating a half wave antenna length used all the time by Amateur radio operators in building many different kinds of antennas. Antenna length: The antenna lengths range from two inches long to two feet in diameter . For your shortwave listening, if you cannot install a long wire or dipole for shortwave, then I would recommend going up to the antenna and disconnecting the coax or twin lead from the antenna, and leave it disconnected. Our modification to the G5RV and ZS6BKW antennas, while also somewhat of a compromise of frequency ranges and VSWR, lets us use all HF bands between 80 and 10 except 30 and 60* meters. Most all portable shortwave radios will have a telescoping antenna as well as one that's built inside (mainly for AM radio band reception). Clearly, there is no 'one size fits all' antenna solution to this. Cheapest would be RG-6 ' 75 ohm. Keep listening. RG-59 and RG-6 are 75 Ohm coaxial cables designed for cable television applications, they tend to have wide frequency response and low line loss. [Thomas]'s design is based on a length of coaxial cable, which should . Since we are convinced of the H 155 and the Hyperflexflex 5 we offer you the original cable by the meter and pre-assembled in our online shop. Thinsont 2.4 Inch Screen Stereo Sound Shortwave Longwave with Telescopic Antenna Professional Touch. take 12 or 14 ft of 16 gauge primary or a piece of clear stereo speaker wire pulled apart and solder to center of coax. The decibel scale is logarithmic, so a loss of 3 Db is a 50% reduction in power. The inner conductor is shielded by the outer. Pretty bad for isolation, but very inexpensive. 2. Size: 4" W x 2.9" H x 0.8" D. The antenna's 7.62 metre coax feeder acts as a counterpoise for the antenna, therefore no connection to ground is necessary. Consider the following features when making your decision: Brand: Some of the options include Alpha Delta, RadioShack, Sainsonic, and TECSUN. The RG-174 coaxial cable is terminated in a mono 3.5mm plug that suits many portable shortwave . 4.2 out of 5 stars 141. Install a 9:1 UNUN at the antenna end of the coax. See All Items In This Department; Station Accessories. Some radios (usually the higher priced models) will have an external antenna jack, usually a 3.5mm (1/8), where you can plug in your own . Shortwave, AM, FM and Internet Radio. In an unc. Option Three: the one I recommend. ~ 10: Antenna Tuning Unit (ATU) I've been using the MFJ-971 for portable use and demos because of the weight . NOTE: If you don't want to build it, Radio Shack sells this type antenna for about $35 (+ coax). 89. The above is a copy and paste from their website; You will need to find some way to transition from a SO-239 socket. However, the stainless steel eyelet which is connected to the balun is internally grounded, if reception is noisy this can be grounded to an external earth. Extend its telescopic antenna and place it near and parallel to one side of your homemade tuned loop shortwave antenna. Here's the clip for attaching the antenna to "something". I you want to use coax as an antenna, then it's easier to use the outer conductor. You'll need about 435 feet of wire for this antenna plus appropriate length of coaxial cable. A 6db loss is 50% on top of 50%, and so on. Take 8 ft or so of RG58 Solder the mini plug on one end center to center, shield to outside shell of plug. . Eton - Elite 750, The Classic AM/FM/LW/VHF/Shortwave Radio with Single Side Band, 360 Rotating AM Antenna . Bring the coax out through a ridge vent, if possible. If you were only trying to cover the CB band, a finely tuned antenna will add some signal to your receiver. . Used for TV/cable installs. [ Hits: 20452 | Votes: 24 | Rating: 8.42 ] A Small Wire Loop Antennas for 160 meters pop - Low noise, receive only coax loop antennas for 160 - 10 meters HF bands. Turn on your shortwave radio (mine is a Sony ICF-SW 7600G). When you are shopping on eBay for a shortwave antenna for ham radio, there are many options available to choose from. If you can't get in the attic, you can lay it on top of the roof. You could use a 'banana' (they fit into the SO-239 socket quite nicely) plug and a alligator clip wired into a 3.5 plug or you could get a PL_259 and coax or wire and wire it into a 3.5 plug. Only 2 left in stock - order soon. Feedline loss is measured in decibels (Db) per 100 feet. Just attach the end clip to the telescoping antenna of your radio and extend the antenna up the wall or to a window. The CC Shortwave Reel Antenna is a convenient and inexpensive way to improve the reception of any shortwave radio. 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