The HOA Buster uses your largest antenna, which are your gutters, that is already installed to operate on 10 to 80 Meters and 440 & 900 MHz.

Operationally, the HOA Buster is a matching network that uses gutters as the antenna element for 10-80 Meters + 440 & 900 MHz frequencies. The matching network then has a metal Mounting Spike under it, which is used to complete the circuit and provide a static drain. Please note that this system is built to order in a PVC Housing that is customizable in many colors so please be patient with us after you place your order.

NOTE – Never Loosen any of the Bolts, Washers, Nuts, or Caps on the HOA Buster’s match. Otherwise, you’ll need an impact wrench to tighten them. 

HOA Buster antennas purchased before May 1, 2023, would need to be tested before being used on the 440 or 900 MHz frequencies.

Specifications 

• Base antenna coverage from 10M to 80M (29.7MHz to 3.5MHz) + 440 & 900 MHz frequencies. Optionally available are 6 meters when the gutters are less than 30 feet and 160 meters when the gutters are greater than 60 feet.
  Peak Power – 250 PEP SSB, 125 CW, or 25 watts for digital modes. NOTE – The MIL-STD-188 M110a digital communications mode is rated at bursts of 100 watts digital for up to 1 minute using the MIL-STD Data Modem Terminal (MS-DMT) and Automated Message Terminal (AMT) software applications.
• Details

This is a permanent outdoor system that weathers well.

There’s no maximum size for the gutter that can be used, and a minimum combined length of the gutter and downspouts should be at least 25 feet. Make sure that your gutter, downspout, or flashing isn’t grounded or touching the ground. Then just feed the gutter from one end as if it were an end-fed antenna.

There are no feed-line minimums/maximums.

What detracts from gutters performing well as an antenna, are often if it is either steel/aluminum or stucco siding/roof. Whether your siding is stucco, there may be chicken wire under it. There may also be Mesh Fiberglass Stucco Netting, which has no negative impact. So, check for that to ensure that metallic wire does not exist under your stucco siding, which is present will have an absorption rate for the RF that makes it difficult to either receive or transmit. Again, this is also true whether your siding or roof is aluminum or if the insulation under your siding/roof has aluminum/foil under it.

The 440 MHz and 900MHz band is a part of the UHF (Ultra High Frequency) radio spectrum. The most common polarization used in this band is vertical polarization. However, gutters are polarized horizontally. This horizontal or vertical polarization of the antenna is the orientation of the electric field generated by the antenna. The polarization of the transmitting and receiving antennas must match for efficient communication. You will then experience far less performance when communicating between vertically and horizontally polarized antennas vs two antennas are similarly polarized.

Included:

• 1 HOA Matching network,
• 1 Spike Mount, and
• 1 Eight-foot jumper wire;
  • The jumper wire can be made shorter or longer upon request. Just enter a note in the Comment field when you CHECK OUT for the length you want.
    • 8 feet is the optimum length to not degrade performance.
    • 12 feet is the maximum length to keep the wire from touching the ground.
    • 5 feet is the length to keep performance at an acceptable level.
    • 18 inches is the minimum length to function with degraded performance.

Installation and setup:

Before installing the HOA Buster, we encourage hams to determine if approval is needed to use a gutter as an antenna. Then simply;

1. Push the included Mounting Spike into the ground,
2. Install the included jumper wire by fully extending it between the HOA Buster Match and downspout, so that it does not touch the ground. Then simply use the included clip at the end of the jumper wire to secure it into place,
3. Then attach your coax to the connector on the bottom of the Alpha Match and run the coax to your equipment.

Options:

An optional 60-foot EmComm element activates 2 through 80 Meters and is used instead of a gutter. This is very useful if you are deployed on a beach, mountain, or in a park.  This element is most affective when installed as a sloping antenna after the Mounting Spike is simply pushed into the ground at your operating position.

An optional non-resonant length of coax that is 18 or 50 foot long ensures high efficiency transmission from the antenna.

The optional padded 600D field bag will hold all of the antenna’s components and more!

All of the following SWR readings are without a tuner.

“Received the HOA buster a week or so ago. What a game changer!!! I have it hooked to about 75’ of gutter on the north side of the house. I am getting great reports from 20, 30, 40 and 80 meters. This is so awesome that I have ordered another one to load the west side gutter system so I can work more. W5CVT”

80M SWR = 2.5:1	40M SWR = 1.33:1	20M SWR = 1.21:1
17M SWR = 1.35:1	15M SWR = 1.62:1	12M SWR = 1.80:1

Highest SWR analysis found from randomly selected gutters

Read more from customers! Gutter Talk – Rain Gutter Antenna – KC5GFD – Amateur Radio

We are dedicated to improving all of our antennas. Specifications and descriptions are subject to change without notice.