How much less than 150 ohms, Roger? The resistance on the K3 used to write and test that procedure is just about 200 ohms, no matter which way the meter leads are oriented. So >150 ohms seemed a safe value to specify. Since you chose to remove the original choke, did you desolder or clip the leads?. If you clipped the leads, are you certain one can't short to something on top of the board (such as the FP shield or the trace that crosses under the original choke. There's a via right near one of the solder pads for the original choke.)? If you desoldered the old choke and cleared the pads, is are the leads cut short on top of the RF board where they cannot touch anything? Finally, is the new choke attached to the correct two pads on the bottom? Ron AC7AC
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Roger Marrotte Sent: Saturday, November 15, 2008 12:14 PM To: [email protected] Subject: [Elecraft] [K3] AF Stage Upgrade, RFC47 not greater than 150 ohms I received an AF Stage Upgrade kit today. Installation went well. I chose the "remove the old RFC47" method. When I was done with the RFC47 mod, I measured the resistance from each side of RFC47 to ground and my meter showed a value less than 150 ohms. I measured a value of 104 ohms for each side to ground. The installation looks as clean of could be. I did the AF out mod, put the radio back together and all seems to be working well. I'm wondering if the 150 ohm value mentioned in the manual is wrong? Roger, W1EM
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