|2||Virtually unlimited configurations of the MiniBac are
possible. Miniback forms its own feedline, which is quickly assembled in
the field to meet the requirements of your site and choice of style. No
lossy, heavy coaxial cable, or bulky twin lead is used. Open wire feed
makes every precious watt count.
<#2-LEFT: The MiniBac forms a multi-band dipole using 2 supports, or an inverted-Vee with a single support.
|3||<#3-LEFT: Using a single support, such as a tree or pole, the MiniBac forms an Inverted-L with efficient counterpoise simply laid on the ground using no special alignment. This antenna configuration provides a good omnidirectional pattern, with both low angle and high angle radiation. While a tuner is suggested for multiband operation, no tuner is needed for 50ohm operation on 7MHz.|
|4||<#4-LEFT: Using a single support, such as a tree or pole, the MiniBac forms a Tilted-L with counterpoise raised above the ground several feet high. The raised counterpoise method provides slightly better radiation effiency. This antenna configuration provides optimum low angle signal on 10 through 30MHz as indicated in the direction of the beam arrow. On 3.5 through 7MHz, it is omni-directional with high angle radiation for communications within about 350mile radius.|
|5||<#5-LEFT: A single wire of the MiniBac forms a Delta Loop antenna strung from a single support tree or pole. This method provides high efficiency with good directivity on 14MHz, requiring no tuner for 50ohm match. Using the twisted pair feedline, which can be run just above ground level, this configuration may be used with good success on other frequency bands, 18 to 30MHz, but a tuner is recommended. In addition, for 3.5 and 7MHz operation, the remaining MiniBac wire can be laid on the ground as a counterpoise, similar to the #3 Inverted-L, with the Delta-Loop and its feedline used as a vertical radiator against the counterpoise.|
|Ham radio operators are welcome to homebrew
and use the MiniBac for personal and club use.
Non-commercial use of the MiniBac name for
ham radio in connection with the antenna is
authorized. All commercial rights are reserved.
Links to this site should direct to the home page.
Permission for use of drawings should
be requested by email.
|#1: Phased Array of Radiating Towers
Multiband 1/4 Wave Resonators for 160m/80m
|#2 Radiating Towers using Broadband
1/4wave Fan Resonators for separate 160m and 80m
|#3: Multiband Cage Dipole for 160m/80m
|#4: Coaxial Bazooka 1/4 Wave Resonators
with Radiating Tower for separate 160m and 80m
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