[Elecraft] Problem with CAL PLL for 160 meters / INFO 232

A. Hansen [email protected]
Wed Sep 10 14:33:00 2003


Zu, 

Did you remember to move the freq. counter probe to TP1? That message 
usually indicates that the measured signal is not in the correct frequency range.

73, Gus Hansen / KB0YH

----- Original Message ----- 
From: "zu" <[email protected]>
To: <[email protected]>
Sent: Wednesday, September 10, 2003 19:17
Subject: [Elecraft] Problem with CAL PLL for 160 meters / INFO 232


> I have a problem with the VCO linearisation during 160m alignement of K2 (No
> 3680)
> The CAL PLL does not start but shows INFO 232 even though the 7 MHz
> linearisation works fine.
> VCO load caps and relais are so far OK but the VCO control voltage is 0.9 V
> at 1.8 MHz.
> Starting from 3.5 MHz in the VCO table the computed value for C75 should be
> rather 515 pF
> than the specified 470 pF. With 44pF in parallel to C75 the VCO control
> voltage is
> 2.66V at 1.8 MHz and 6.2 V at 2.0 MHz. This seems to be OK but also with
> this modification
> the CAL PLL does start but after half a second K2 shows again INFO 232.
> Can somebody please help me to cure this problem
> 
> Best 73 de Ueli, HB9MFK
> 
> 
> 
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