[TowerTalk] Static Drain Resistor in Arrestor

Wes wes_n7ws at triconet.org
Tue Dec 16 12:24:40 EST 2025


I think you confuse static (not moving) charge with QRN, natural and/or man 
made.  The drain resistor is not a noise blanker.

Wes  N7WS


On 12/16/2025 10:07 AM, RVZ via TowerTalk wrote:
> I love the idea of a "Static Drain Resistor" in an arrestor if it actually reduces "static" QRN on receive.  I've installed about a dozen ICE/Morgan arrestors on Verticals and Yagi's here in Florida during the past 25 years, where we receive a great deal of "static", but when doing unscientific A/B tests when listening by ear, I haven't noticed the ICE/Morgan arrestor to be quieter than a Polyphasor.  I realize that's a poor way to judge performance, so I've always wondered if anyone actually measured and confirmed that the "static drain resistor" in the ICE/Morgan was effective at reducing QRN.  Would anyone know of test results confirming the effectiveness of a static drain resistor in an arrestor?     73, Dick- K9OM
> The ICE, now Morgan arrestors work superb. They use a static drain resistor, then a DC blocking cap, then the shunt inductor, then the GDT.
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