ATD-2, lightning protection, static bleed, surge arrestor, rf surge, protection, static discharge
ATD-2, lightning protection, static bleed, surge arrestor, rf surge, protection, static discharge
ATD-2, lightning protection, static bleed, surge arrestor, rf surge, protection, static discharge
ATD-2, lightning protection, static bleed, surge arrestor, rf surge, protection, static discharge

ATD Lightning and RF Surge Protection for the DX Flagpole Antenna

Regular price
$225.00
Sale price
$199.00

You've asked for premium protection. Now, protect Your Remote Auto-Tuner and HF Radio Station with a Premium Quality ATD Auto-Tuner Disconnect that includes Static Discharging in our ATD-2 Product. 

An Antenna Tuner Disconnection system, in this case, an RF Surge Arrestor and Lightning Protection, including Static Discharge, otherwise known as Static Bleed remains a smart and popular option with our DXV and DX Flagpole vertical antennas in areas where electrical storms are common. We all know nothing can protect from a direct lightning hit but this is a comforting next level of mitigation for many radio operators and station owners.


How does it work?

The ATD-2 power system flips a relay, shunting at the ATD-2, to ground when the system is not in use. This relay requires 12VDC to enable the relay and connect the Greyline DX Flagpole's connections.
This ATD unit is powered over the very same coax used to feed your antenna system by pass-through of the 12V and ~100ma from the Remote Control unit for the Remote Tuner. Pretty fancy, right?


The ATD-2 is placed between the DXV or DX Flagpole and your Remote Tuner. You can connect via Ladder Line or Coaxial Connector.   

A DIY Toggle switch option is to flip the relay from the shack. This would require 12VDC to enable the relay and connect the Greyline DX Flagpole's connections by burying an underground low-voltage lightning wire, available from big box stores, and provide the 12V DC from either your station power supply when you turn it on or from a wall wart. This can be built with a small box and toggle switch. 

 

You’ve spent a lot of money on that remote auto-tuner and your station. When bad weather and electrical storms threaten, nothing protects your HF radio station better than a hard ground 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-2 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 DPDT relay used in the ATD-2 has 3.1 kV of gap and arc capability, which means that the ATD-2 can be used with full legal limit feeding antennas with an SWR of 60:1. So there is no need to worry about ATD-2 arc-over into the worst loads presented to your remote auto-tuner. The ATD-2 is perfect for protecting your remote auto-tuners.


ATD-2 Specifications:

  • Frequency coverage: DC-50 MHz 
  • Input: Single Wire or Coaxial Cable
  • Input power:  5 kW CW/SSB/RTTY
  • Power supply: Nominal DC + 12 V   (11.5-14 V DC)
  • Relay current: 125 mA
  • NEMA 4X Junction box 4" x 4" X 2" (101 mm x 101 mm x 63.5 mm)
  • 20+ kV Rated

Two screws on either side for the latter line. Inside is the relay, GDT's, Resistors, and DC blocking caps. A ground screw is included for attachment of the ground rod for shorting the Antenna when not in use. Weep holes are on the bottom and side for your optional mounting position.

It breaks the HOT lead going to the vertical. The ground is not used in this product. The ground of the coax shield would be jumpered around the ATD-2.  Useful for our DX Vertical Antenna and DX Flagpole antenna system designs (and our requirement to "float" the antenna system).

Smarter, Stronger and more Elegant. Ham Radio is fun again.

73 Greyline

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