Re: Brainstorm! Power indicater for Hilltopper


Paul Goemans WA9PWP,

Great work Paul! And a precise example of why we love this hobby, QRP, and the folks just like yourself who stand tall on the shoulders of giants.
Hope that doesn't sound too florid but hey, what's a little heartfelt hyperbole among friends.

Don Buckter  W6BOW
San Francisco  CA  USA

-----Original Message-----
From: Paul Goemans <wa9pwp@...>
To: 4SQRP <>
Sent: Fri, May 10, 2019 8:49 am
Subject: [4SQRP] Brainstorm! Power indicater for Hilltopper

Howdy gang,
  I have been obsessing over the lack of power switch or power indicator on the Hilltopper rigs. Here’s what I did this morning. Your mileage may vary!
Noticed a nice unclad square of board at the 4SQRP logo on the top panel. Hmmm, a window!
Noticed it was directly over the reverse polarity diode D1.
I spotted and drilled a 1/8” hole from the back side of the top panel, ALMOST through the board.
I mounted a 1/8” green LED (from my junk box) under that spot, supported from the cathode of D1, with a 3.3K dropping resistor running over to the power jack ground lug. Trial and error until it just fit into the 1/8” hole!
Results shown below. What’s an extra 2 mA among friends? Now I KNOW if the rig is getting power!
First photo, see the green LED glowing just to the right of the power jack? Second photo, top panel view. NO hole in the top panel! Of course you can also poke an LED all the way through the top panel if you wish.
Paul Goemans WA9PWP
Stoughton, WI

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