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If you need a directional antenna that can be rotated easily without rotating the whole radio, this is what you need!
These tuned directional antennas will work with any radio having Longwave, AM broadcast, or 150m Shortwave Marine band.
Three wire connection output via 1/4th inch sturdy microphone plug. Mount it on a 3-wire 1/4th inch microphone jack (Radio Shack has these) so it can be hand-rotated easily just like those antique radio direction finder antennas used to do.
Antenna tunes to resonance with a 9 to 384 pF tuning capacitor (See our variable capacitors).
Antenna has three connection leads, one is output, one is common ground and one connects to your tuning capacitor. See diagram below.
Mounted in a hard PVC plastic case to prevent damage.
These antennas have a 50 ohm output impedance so they are a universal match for your radio's antenna input.
See wiring diagram below showing how to connect it to your radio's antenna jack and your variable capacitor or external fixed-value capacitor.
Antenna will NOT work untuned (unless otherwise indicated below). Operation requires you to tune it to receive frequency with your variable capacitor (results in a -great- boost in signal strength!).
Antennas are approximately 12 inches long, (unless otherwise indicated below) so they are very portable and have good signal capture area.
Antennas are built around our standard 10.125 inch one pound ferrite rod. Longer or shorter ferrite rod lengths are available, price might be extra depending on ferrite length.
Choose your antenna for your desired band below. Requires 9 pF to 384 pF variable capacitor to tune the indicated band, unless otherwise indicated.
SALES TO USA ONLY! NO FOREIGN ORDERS.
NOTE: These are -all- custom made units.
Allow 1 to 4 weeks actual lead time for manufacture of these custom antenna items.
All of these antennas have a standard 50 ohm output.
Antennas are 12 inches long unless otherwise indicated.
Longwave Band. 160 KHz - 520 KHz. Part # NMLW-160 Antenna
$ 79.95 + $ 15.00 s/h.
NAVTEXT Antenna 518 KHz. For reception of the 518 KHz NavText Service. Part # NMTXT-518KHZ. Tunes 518 KHz with your 384 pF variable capacitor at @ 270 pF setting).
$ 79.95 + $ 15.00 s/h.
AM Broadcast Band. 530 KHz - 1710 KHz. Part # NMAM-530 Antenna
$ 79.95 + $ 15.00 s/h.
Shortwave Marine and Ham Bands. 1800 KHz - 4000 KHz. Part # NMSW1800 Antenna
$ 79.95 + $ 15.00 s/h.