lf antenna
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Antennas : 160M- Isolation chokes for 160m verticals
- An article on how much impedance you really need and how small can be a chooke for top band vertical antennas by N6LF
[ Hits: 628 | Votes: 0 | Rating: 0 ]
- Short antennas for 160m
- Often it is not possible to erect a full quarter wave verticals, especially on 160m or even more so at 600m. In this article N6LF illustrate some ideas.
[ Hits: 1135 | Votes: 1 | Rating: 10 ]
- 2 Meter Vertical Moxon
- A home made vertical polarized moxon antenna for 144 MHz, includes dimensions, antenna pattern, SWR and antenna gain plots by WB5CXC
[ Hits: 2084 | Votes: 4 | Rating: 7.5 ]
- Postage Stamp 40 Meter Wire Dipole Antenna
- Build yourself a postage stamp 40 meter wire dipole antenna that fits in a space a little over 20 wide and works reasonably well at low heights
[ Hits: 2765 | Votes: 5 | Rating: 6.5 ]
- 5 Element LFA Yagi for 6 meters band
- A Loop Fed Array Yagi antenna for 50 MHz featuring 11 dBi gain and 23 f/b ratio. In this excellent page the author even includes a detailed drawing in DWG format, with element lenght and spacing measures, in a separa file a full list of material list needed to build this yagi antenna including source and price, the EZnec file for this antenna plan, and a lot of pictures of this LFA Yagi for 50 Mhz. A ten page PDF file containing all infos, is also available to download.
[ Hits: 1177 | Votes: 7 | Rating: 8.57 ]
- 80 Meter Vertical Loop
- The 80 meter vertical loop is constructed from #10 stranded insulated wire available in most hardware stores. The feedpoint uses a 6 inch section of half inch diameter PVC pipe Article by W1TR
[ Hits: 980 | Votes: 4 | Rating: 7.75 ]
- N4DJ Half Square for top band
- Half Square antenna for 80 and 160 meters band
[ Hits: 677 | Votes: 0 | Rating: 0 ]
- Your first antenna - the half-wave dipole
- RSGB article for beginners. How to build a dipole antenna, construction tips and correct setup of inverted-ve dipole antennas
[ Hits: 381 | Votes: 0 | Rating: 0 ]
- Vertical Dipole Array
- A simple and awesome wire monoband antenna, very usefull for portable and dxpeditions usage, consist of two elements, a driver and the reflector.
This endfed halfwave gives a very low take off angle and is very suited for chasing DX.
[ Hits: 1254 | Votes: 2 | Rating: 6.5 ]
- End Fed Half Wave Antenna Coupler
- Centre fed half wave dipoles make great, simple and effective antennas for the HF bands. Sometimes however, the centre feed is not ideal. This great project will improve the overall antenna performance.
[ Hits: 1426 | Votes: 1 | Rating: 10 ]
- 20m Half-Wave End Fed
updated
- A Half wave antenna has a high impedance feed point. This can be matched using a 1/4 wave stub matching section and converts the 40m vertical into an L-shaped 20m J-Pole antenna. The 300 ohm feeder used for this purpose must be kept away from the ground.
[ Hits: 1841 | Votes: 7 | Rating: 8 ]
- G5RV Jr Antenna
- The G5RV junior Half Size antenna by kc8hps
[ Hits: 795 | Votes: 0 | Rating: 0 ]
- Half Size G5RV
- Also known as G5RV junior the half size G5RV feature reduced dimension and multiband coverage
[ Hits: 5312 | Votes: 8 | Rating: 5.75 ]
- Double Half Delta Loop
- Low Band Receiving Antenna, it is a ground independent Receiving antenna which only needs two 10m support poles by DH1TW
[ Hits: 482 | Votes: 0 | Rating: 0 ]
- 60m Halfwave Sloper
- 4.6 MHz (USAF MARS) Halfwave Sloper antenna by W1TR
[ Hits: 537 | Votes: 1 | Rating: 5 ]
- 2.6 MHz Halfwave Sloper
- The 2.6 Mhz M Dipole is constructed from #10 stranded insulated wire available in most hardware stores. The feedpoint uses a T-section of PVC pipe
[ Hits: 386 | Votes: 0 | Rating: 0 ]
- Ground systems for DXpeditions
- An article bu N6LF on ground systems for multi-band verticals over saltwater
[ Hits: 273 | Votes: 0 | Rating: 0 ]
- W3DZZ - 80 to 10 meter antenna
- A schematic design of the W3DZZ antenna in portugues with description of trap building
[ Hits: 2578 | Votes: 7 | Rating: 6.72 ]
- Vector network analyzer comparisons
- Test comparison of different Vecto network analyzers, like N2PK VNA , AIM4170 by W5BIG , TenTec TAPR VNA , IW3HEV miniVNA , MFJ 259B using a HP 3577A VNA as reference by Rudy Severns N6LF
[ Hits: 789 | Votes: 0 | Rating: 0 ]
- Building A RF Dummy Load
- If your doing any home brewing gear for ham radio its a great idea to have a dummy load. This will to your radio be the perfect antenna...it will never radiate but your radio sees a perfect 50 Ohm impedance.
[ Hits: 1460 | Votes: 5 | Rating: 8.6 ]
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