RECEIVING ANTENNAS

For good reception the antenna must be "right hand circular polarized". A directional antenna capable of moving azimuth and elevation is by far THE BEST way to go, however it is the most expensive and installation and unattended operation gets complicated quickly!

The best all around antenna would be an omni-directional
Turnstile antenna or for better performance the QHA antenna.
Click the links above for info on antennas.

Preamplifiers and/or band pass filters may be needed depending on some variables.

Both antennas are matched for use with cable TV type RG59/RG6 coax which is readily available to almost any area. If for some reason you live in the wilderness, I can provide any length coax, with fittings. Just email for a quote.

Each antenna is handcrafted TO ORDER, so allow a week before the antenna is shipped.

Now a word about DESIGN.

I use calculations based on renowned WXSAT antenna engineers. I have purchased an MFJ-269 at the tune of $400 delivered and ran some very PRECISE calculations on the antenna's produced here.

Specifically the QHA.

The antenna is DAMN NEAR resonant on it's target frequency. I have had one person SWEAR that he gets better reception using a 75 to 50 ohm matching stub. What I have found is:

(slight variances antenna to antenna)

Recordable findings:

Resonant Freq @ 135-140 mHZ (target is 138, but will vary depending on construction)

Rs = 10-20

Feedline= 75 ohm

SWR = 2.5:1 or less

Opinion:

SWR is irrelevant! I have constructed tuned matching stubs (75 to 50) to provide a 1:1 SWR and received signal was not one db better.  This is a receiving antenna, not a transmitting antenna.

MY radios use Motorola (car radio) jacks and I convert to 75 ohm F fittings. The mismatch is not severe enough to cause any appreciable loss of signal.

I CAN PROVIDE tuned matching stubs if you want (75 to 50 (f to pl259)) @$25, just ask for one.