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| To: | [email protected], [email protected] |
|---|---|
| Subject: | Re: LF: W-G SPM-19 trouble (survives exploratory surgery) |
| From: | "Dexter McIntyre W4DEX" <[email protected]> |
| Date: | Wed, 04 Dec 2002 19:43:32 +0000 |
| References: | <[email protected]> |
| Reply-to: | [email protected] |
| Sender: | <[email protected]> |
The SPM-19 lives! Thanks to Jim Moritz, I was able to locate the problem in the 40.01 MHz 2nd LO PLL circuit. A 2N918 transistor on the PLL board was open. Replaced it with a NTE161 and now the VCO islocked. A wandering VCO was causing the off frequency problem. Now to find holes for all those screws! What a beautifully engineered piece of equipment. W4DEX |
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