10-160M & Military
ProMaster Sr
HF base antenna


Starting at: $499.00

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  • Description
  • Reviews
The ProMaster Sr is a rugged wide-band antenna rated at 250W PEP SSB or 100W Digital that supports short bursts of Digital at 150W. Perfect for ALE/CCIR Digital Signal Processing of the Frequency Range 1.6 to 34 Mhz.

This durable permanent base and transportable outdoor antenna brings multi-band system base performance into an extremely small footprint. All you need is an area that is 50 feet x 50 feet to optimally deploy the antenna with a total height of 22 feet. Perfect for encrypted or non-encrypted Automatic Link Establishment (ALE) and all HF modes including, but not limited to, CW, SSB (USB/LSB), AM, etc.

Built for harsh environments, you will appreciate the durability of this antenna. If you happen to take this antenna portable, you'll also enjoy the 10 minute setup/take-down. The vertical element stores away at 3 foot 3 inches, and then is nearly 18 feet tall when deployed. This system also incorporates 4 active horizontal elements to provide you with enhanced NVIS, while also optimizing take off angles of the vertical element for DX. Simply mount the antenna 6 to 7 feet off the ground on a galvanized fence post pipe or on the Optional Steel Tripod.

ProMaster-Sr_Analysis


(Follow the instructions in the User Manual to select the lowest possible SWRs for the higher or lower bands)

User Guides:
User Guides

Specifications:
18 feet tall (approximately) and can break down to components that are 3 foot long
Frequency Coverage - 1.6 to 34 MHz
Power - 250W PEP SSB (125W CW or 100W Digital)
Weight - 6 Pounds

Includes:
- 1 Tuning coil inside an outdoor NEMA enclosure
- 1 Heavy duty mount and hardware
- 1 Self-supporting 6 section telescopic vertical element with 5 Stainless steel clamps
- 4 Active wire NVIS elements
- 1 Grounded counterpoise radial wire and Ground stake

The details:
The ProMaster Sr is a base camp antenna that is configured as a vertical antenna system with active NVIS elements. Each band uses the vertical element and the active horizontal NVIS elements from 1.6 through 34 MHz, which can be matched with an antenna tuner. if the ProMaster either 1) is installed over a poor ground, 2) parallels a metal structure, 3) installed on a roof without adequate grounding, or 4) or not placed in a clear area. From this design, real world tests enabled us to balance the reactance between capacitance and inductance with the tuning coil on the ProMaster Sr antenna. The resulting SWRs that are typically seen are presented in the analysis, which may vary depending upon your environment. Essentially, the center feed point above the Alpha Match has specific wire lengths that allow the Alpha Match to perform from 1.6-34 MHz.

SWR Analysis when directional option is enabled 

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