Workman Electronics
Workman Electronics A28 In-Line PL-259 Male to SO-239 Female Static & Lightning Arrestor
Workman Electronics A28 In-Line PL-259 Male to SO-239 Female Static & Lightning Arrestor
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Quick Specs
Quick Specs
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The Workman Electronics A28 In-Line Static & Lightning Arrestor is a compact, cost-effective baseline surge suppressor engineered for coaxial antenna feedlines. Designed with standard PL-259 (UHF Male) to SO-239 (UHF Female) connections and dual chassis grounding lugs, the A28 is an accessible layer of defense against high-voltage static buildup, nearby electromagnetic surges, and atmospheric charges.
📉 Lowering the Noise Floor: Precipitation Static Mitigation
Beyond surge protection, one of the greatest day-to-day benefits of a properly grounded static arrestor is its ability to bleed off atmospheric charge. Wind-driven rain, dry snow, and dust storms cause constant static buildup on ungrounded antennas, which manifests as a high, hissing "noise floor" or rhythmic popping that masks weak signals. By continuously routing this accumulated charge to ground, the arrestor mitigates "precipitation static," resulting in a quieter receiver and a significantly improved Signal-to-Noise Ratio (SNR).
⚡ The Practical Reality: Static Dissipation vs. Direct Strikes
In radio installations, any protection is significantly better than zero protection. An ungrounded antenna acts as a direct collector of atmospheric charge caused by passing dry weather fronts, wind friction, dust storms, and distant electrical storms. When static accumulates on an antenna, it searches for the easiest path to ground—frequently finding it through the sensitive front-end receiver diodes of your transceiver.
The Workman A28 uses an internal spark-gap chamber tied to external grounding screws to bleed off elevated static charges and route transient voltage down to earth before it reaches your equipment.
Balanced Assessment: Strengths & Limitations
What the A28 Does Well
- Bleeds Dangerous Static Buildup: Drains atmospheric and wind-induced charge to ground, preventing static electricity from frying receiver front-end circuits.
- Lowers Receiver Noise: Mitigates precipitation static, lowering the noise floor during active weather events.
- Direct In-Line Installation: UHF Male (PL-259) to UHF Female (SO-239) design screws straight into the back of your antenna tuner, switch, or feedline without extra adapter barrels.
- Integrated Ground Screws: Features threaded chassis lugs with lock-washers to attach heavy copper ground wire directly to a grounding rod or station busbar.
- Accessible Baseline Protection: Inexpensive insurance for CB, HF, and VHF budget setups where expensive gas-discharge units may not fit the project budget.
Operational Limitations
- Not a Replacement for Direct-Hit Grounding: No consumer arrestor can survive a direct lightning bolt delivering millions of volts; heavy grounding of masts and lightning rods remains mandatory.
- Spark-Gap Technology: Operates on fixed gap arc discharge rather than replaceable precision gas discharge tubes (GDT).
- Frequency Limitations: Best suited for HF, CB (27 MHz), and lower VHF bands; UHF frequencies (400 MHz+) may experience minor insertion loss due to UHF connector tolerances.
Performance & Installation Highlights
-
🔌Convenient Male-to-Female Form Factor Eliminates patch cables by threading directly onto antenna switches, radio chassis ports, or entry bulkhead panels.
-
🛡️All-Metal Knurled Housing Solid nickel-plated brass body provides mechanical shielding and dependable RF continuity.
-
🔩Dual Grounding Lug Screws Includes machine screws and retaining hardware to clamp 10 AWG to 6 AWG ground leads securely.
-
📻Universal Two-Way Radio Compatibility Compatible with standard PL-259 feedlines used across CB, Amateur HF, and Land Mobile base station antennas.
Technical Specifications
| Product Model | Workman Electronics A28 |
|---|---|
| Input Connector | UHF Female (SO-239) |
| Output Connector | UHF Male (PL-259) Knurled |
| Discharge Type | Spark Chamber / Internal Air-Gap Discharge |
| Ground Connection | Dual External Machine Screws with Lock Washers |
| Body Construction | Machined Nickel-Plated Brass |
| Impedance | 50 Ohms Nominal |
| Recommended Frequencies | 0 – 30 MHz (HF/CB), usable through VHF (150 MHz) |
⚠️ Mandatory Installation Grounding Notice
An in-line arrestor cannot function without an earth ground. You must connect the A28's ground screw to a dedicated external ground rod or your home's central electrical ground system using low-inductance, heavy-gauge copper conductor wire (minimum 10 AWG). Always disconnect antenna feedlines when severe thunderstorms are imminent.
Description
The Workman Electronics A28 In-Line Static & Lightning Arrestor is a compact, cost-effective baseline surge suppressor engineered for coaxial antenna feedlines. Designed with standard PL-259 (UHF Male) to SO-239 (UHF Female) connections and dual chassis grounding lugs, the A28 is an accessible layer of defense against high-voltage static buildup, nearby electromagnetic surges, and atmospheric charges.
📉 Lowering the Noise Floor: Precipitation Static Mitigation
Beyond surge protection, one of the greatest day-to-day benefits of a properly grounded static arrestor is its ability to bleed off atmospheric charge. Wind-driven rain, dry snow, and dust storms cause constant static buildup on ungrounded antennas, which manifests as a high, hissing "noise floor" or rhythmic popping that masks weak signals. By continuously routing this accumulated charge to ground, the arrestor mitigates "precipitation static," resulting in a quieter receiver and a significantly improved Signal-to-Noise Ratio (SNR).
⚡ The Practical Reality: Static Dissipation vs. Direct Strikes
In radio installations, any protection is significantly better than zero protection. An ungrounded antenna acts as a direct collector of atmospheric charge caused by passing dry weather fronts, wind friction, dust storms, and distant electrical storms. When static accumulates on an antenna, it searches for the easiest path to ground—frequently finding it through the sensitive front-end receiver diodes of your transceiver.
The Workman A28 uses an internal spark-gap chamber tied to external grounding screws to bleed off elevated static charges and route transient voltage down to earth before it reaches your equipment.
Balanced Assessment: Strengths & Limitations
What the A28 Does Well
- Bleeds Dangerous Static Buildup: Drains atmospheric and wind-induced charge to ground, preventing static electricity from frying receiver front-end circuits.
- Lowers Receiver Noise: Mitigates precipitation static, lowering the noise floor during active weather events.
- Direct In-Line Installation: UHF Male (PL-259) to UHF Female (SO-239) design screws straight into the back of your antenna tuner, switch, or feedline without extra adapter barrels.
- Integrated Ground Screws: Features threaded chassis lugs with lock-washers to attach heavy copper ground wire directly to a grounding rod or station busbar.
- Accessible Baseline Protection: Inexpensive insurance for CB, HF, and VHF budget setups where expensive gas-discharge units may not fit the project budget.
Operational Limitations
- Not a Replacement for Direct-Hit Grounding: No consumer arrestor can survive a direct lightning bolt delivering millions of volts; heavy grounding of masts and lightning rods remains mandatory.
- Spark-Gap Technology: Operates on fixed gap arc discharge rather than replaceable precision gas discharge tubes (GDT).
- Frequency Limitations: Best suited for HF, CB (27 MHz), and lower VHF bands; UHF frequencies (400 MHz+) may experience minor insertion loss due to UHF connector tolerances.
Performance & Installation Highlights
-
🔌Convenient Male-to-Female Form Factor Eliminates patch cables by threading directly onto antenna switches, radio chassis ports, or entry bulkhead panels.
-
🛡️All-Metal Knurled Housing Solid nickel-plated brass body provides mechanical shielding and dependable RF continuity.
-
🔩Dual Grounding Lug Screws Includes machine screws and retaining hardware to clamp 10 AWG to 6 AWG ground leads securely.
-
📻Universal Two-Way Radio Compatibility Compatible with standard PL-259 feedlines used across CB, Amateur HF, and Land Mobile base station antennas.
Technical Specifications
| Product Model | Workman Electronics A28 |
|---|---|
| Input Connector | UHF Female (SO-239) |
| Output Connector | UHF Male (PL-259) Knurled |
| Discharge Type | Spark Chamber / Internal Air-Gap Discharge |
| Ground Connection | Dual External Machine Screws with Lock Washers |
| Body Construction | Machined Nickel-Plated Brass |
| Impedance | 50 Ohms Nominal |
| Recommended Frequencies | 0 – 30 MHz (HF/CB), usable through VHF (150 MHz) |
⚠️ Mandatory Installation Grounding Notice
An in-line arrestor cannot function without an earth ground. You must connect the A28's ground screw to a dedicated external ground rod or your home's central electrical ground system using low-inductance, heavy-gauge copper conductor wire (minimum 10 AWG). Always disconnect antenna feedlines when severe thunderstorms are imminent.
