-40%

GAP Titan DX  80M to 10M HF vertical dipole multi band antenna for Ham Radio

$ 52.8

Availability: 63 in stock
  • Size: 32 feet
  • All returns accepted: ReturnsNotAccepted
  • Features: Multi-Directional
  • Condition: Used
  • Type: Antenna
  • Maximum Range: anywhere
  • Compatible Product: Ham radio antenna
  • Brand: Gap
  • Band: HF
  • Country/Region of Manufacture: United States
  • Color: Silver
  • Model: Titan DX
  • Item Weight: 50 lb
  • Year Manufactured: 2018 or 2019
  • Number of Inputs: 1

    Description

    This is a two year old GAP Titan DX that I am selling.  The antenna was set up on my 34 foot long third floor deck.  I used two straight-line counterpoise radials instead of the square wire counterpoise that is mounted standard per GAP.  The unused square counterpoise supplied with the antenna is in the box so if you go that route, it is there, new and unused.  I am also including the wire radials that I used.
    The antenna will include the tilting base with the wood mount that allows you to attach it to any vertical surface like a fence, railing or house.  All the bolts are stainless steel.
    I improved the minimum SWR frequency centering in each band by tuning in aluminum lengths (trimming the aluminum flashing shorter) that are attached at the end of the tuning rods.  It made a considerable improvement in making it possible to operate anywhere on any band and switch bands without retuning.  See the photo of my tuning and test results also typed below.  80M band is the only narrow bandwidth one and for that I am also including all three of the GAP 80M capacitors (3.7 3.8 3.9MHz) that are offered by GAP.  I also made a capacitor, 3.95MHz,  just like the GAP caps, that will allow you to operate at the very top of the 80M band. My favorite spot.  All  bands VSWR are below 2.0 for the full bandwith of that band except the 80M for which GAP uses the included plug-in capacitors
    All paperwork and my test results are included.  There is nothing missing, broken, worn out or corroded.   All the jumpers to the tuning rods have been soldered after the factory crimping.  The strain-relief and reliability of the feedline exiting the lower end of the antennna has been much improved with a clamp and straight coax exit,, replacing the OEM GAP method of over-bending the coax feedline 90 degrees at the bottom.  It is explained in one of the small plastic bags of hardware.
    Two stands to help in supporting the antenna during assembly and when the antenna is lowered are included.
    List of items included
    1.   GAP Titan DX antenna in box  and all necessary hardware plus extras
    2.   Original manual and instructions
    3.   Notes and testing results
    4.   3 GAP factory low band capacitors plus the 3.95Mhz one I designed.
    5.  Tuning lengths of aluminum if you want to really get it tuned in precisely
    6.  Support lines made of dacron polyester UV resistant material plus about
    220 feet of unused remaining line still spooled.  The spool of line is not shown in photo but included.
    7.  2 stands for working on the antenna
    8.  Tilt base, mount pole and wooden support unit.
    9.  40M and 10M radials, 30 feet of coax feed
    Complete results of the last test of the antenna on April 20, 2020 is documented below.
    I used a SARK 110 antenna analyser for tuning and VSWR and frequency data.   All measurements were taken
    at the yellow antenna feedpoint coax end about 6 feet past the bottom of the antenna.
    minimum            VSWR at        VSWR at
    Band VSWR at    freq           Lo Band Edge        Hi Band Edge
    80M    1.13      3.80 MHz        2.0 @ 3.74 MHz    2.0 @ 3.86 MHz  (using 3.8MHz capacitor)
    40M    1.16      7.18              1.65 @ 7.0            1.54 @ 7.30
    30M    1.47      10.058           1.56 @ 10.100      1.82 @ 10.150
    20M    1.01      14.13             1.08 @ 14.0         1.07 @ 14.350
    17M    1.10      18.162           1.23 @ 18.068      1.10 @ 18.168
    15M    1.28      21.18             1.63 @ 21.0         1.81 @ 21.45
    12M    1.44      24.94             1.46 @ 24.89        1.46 @ 24.99
    10M    1.32      28.44             1.65 @ 20.0          1.96 @ 29.0
    The antenna performance really shines if you take the time to assemble carefully and  to precisely tune it up for your location.
    This is an excellent antenna for small footprint locations.  I have been very satisfied with it's performance and reliability.
    Because the antenna boxed is 8 feet long and there is the tilt mount and the other box and the two stands, I am requesting please local pickup.  The tilt-mount unit can be easily taken apart into three fairly flat parts.  And there is one small box of the hardware, spool of rope, etc.