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<div align="left"><font face="Arial" size="2"><span style=" font-size:10pt">I am wondering why I am measuring 11.0+ volts at the emitter of the BJT "zener" in my
working VFO? I just checked it again.</span></font></div>
<div align="left"><font face="Arial" size="2"><span style=" font-size:10pt"><br />
</span></font></div>
<div align="left"><font face="Arial" size="2"><span style=" font-size:10pt">According to the manual, it should be 8.7 VDC.</span></font></div>
<div align="left"><font face="Arial" size="2"><span style=" font-size:10pt"><br />
</span></font></div>
<div align="left"><font face="Arial" size="2"><span style=" font-size:10pt">The manual also states that the voltages were measured with a 20 Kohms/volt meter,while I
am using a modern DVM, a Fluke 73III.</span></font></div>
<div align="left"><font face="Arial" size="2"><span style=" font-size:10pt"><br />
</span></font></div>
<div align="left"><font face="Arial" size="2"><span style=" font-size:10pt">Although I know that the older meter would have loaded the circuit more than the modern
one, since that junction is supposed to be, essentially, voltage-regulated, I am suspicious
now that the BJT in my working VFO is defective.</span></font></div>
<div align="left"><font face="Arial" size="2"><span style=" font-size:10pt"><br />
</span></font></div>
<div align="left"><font face="Arial" size="2"><span style=" font-size:10pt">At the moment, I don't have a working 20 Kohms/volt meter.</span></font></div>
<div align="left"><font face="Arial" size="2"><span style=" font-size:10pt"><br />
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<div align="left"><font face="Arial" size="2"><span style=" font-size:10pt">Drift in the working VFO seems minimal, but I haven't really measured it yet either.</span></font></div>
<div align="left"><font face="Arial" size="2"><span style=" font-size:10pt"><br />
</span></font></div>
<div align="left"><font face="Arial" size="2"><span style=" font-size:10pt">I am removing the defective VFO today, and will be testing it. Then I'll report back here.</span></font></div>
<div align="left"><font face="Arial" size="2"><span style=" font-size:10pt"><br />
</span></font></div>
<div align="left"><font face="Arial" size="2"><span style=" font-size:10pt">Also, if I end up having to replace that BJT "zener" with a more modern one, there is the
LM-336-5 which is a precision Zener I was thinking of using, but I am still in the dark as far
as its temperature stability is concerned.</span></font></div>
<div align="left"><font face="Arial" size="2"><span style=" font-size:10pt"><br />
</span></font></div>
<div align="left"><font face="Arial" size="2"><span style=" font-size:10pt">Has anyone here tried this component?</span></font></div>
<div align="left"><font face="Arial" size="2"><span style=" font-size:10pt"><br />
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<div align="left"><font face="Arial" size="2"><span style=" font-size:10pt">Ken W7EKB</span></font></div>
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