ATD-1 | Auto Tuner Disconnect Lightning Protection for Lightning and RF surges
ATD-1 | Auto Tuner Disconnect Lightning Protection for Lightning and RF surges
ATD-1 | Auto Tuner Disconnect Lightning Protection for Lightning and RF surges

ATD-1 | Auto Tuner Disconnect Lightning Protection for Lightning and RF surges

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Regular price
$200.00
Sale price
$200.00

Antenna Tuner disconnection systems for RF Surges and Lightning Event Protection. Fed through coaxial cable with a Bias "Tee" or through separate cabling, your choice.

Protect Your Remote Auto-Tuner with a Premium Quality Auto-Tuner Disconnect!

You’ve spent a lot of money on that remote auto-tuner.  When bad weather threatens, nothing protects your auto-tuner better than a hard ground right at the auto-tuner output.  But how do you do this unless you go outside and disconnect and ground the auto-tuner output when it is not in use?  The answer is the ATD-1 Vertical Antenna & Auto-Tuner Disconnect, which automatically grounds the antenna feed point and auto-tuner output when the DC control voltage to the unit is disconnected.  

The DC control voltage may be supplied via the BIAS-T MASTER or through a separate DC connection.  The DPDT relay used in the ATD-1 has 3.1 kV of gap and arc capability, which means that the ATD-1 can be used with full legal limit feeding antennas with an SWR of 60:1.  So there is no need to worry about ATD-1 arc-over into the worst loads presented to your remote auto-tuner.  The ATD-1 is perfect for protecting your remote auto-tuners.


ATD-1 Specifications:

  • Frequency coverage: DC-50 MHz 
  • Input: Single Wire 
  • Input power:  5 kW CW/SSB/RTTY
  • Power supply: Nominal DC + 12 V   (11.5-14 V DC)
  • Relay current: 125 mA
  • Plastic Box approx 4" x 4" X 2.5" (101 mm x 101 mm x 63.5 mm)
  • 20+ kV Rated

Can be used with a Bias Tee to avoid additional cabling by using the coaxial cable to send the 12 V DC to the ATD-1.

Two units needed one for DC injection and one for DC extraction. 

Again, note that the ATD-1 can be used with a separate coax or by using the Bias Tee product. See our Premium Quality Bias-T Master to learn more, here:

As you can see it can be powered via coax with our BIAS-T product. It breaks the HOT lead going to the vertical. Ground is not used in this product. Ground of the coax shield would be jumpered around the ATD-1.  Useful for our DXV and DX Flagpole antenna-system designs (and our requirement to "float" the antenna system).