[Elecraft] K2 problem, troubleshooting (alignment and signal tracing)

[G3VVT at aol.com]

In a message dated 12/03/05 22:33:23 GMT Standard Time,  martenjj at hotmail.com 
writes:

On  "Low-Pass Filteass Filter, and T-R Switch", I have some questions and  
problems.  It says to use a signal generator or test  oscillator.  Will the 
XG1 work here?  This is what I was using,  but it mentions setting the signal 
generator to 0.14 Vrms.  Does this  part not apply to the XG1, and which 
setting should I be using on the  XG1?



--------------------------
 
The XG1 has not got sufficient output to carry out the test with the RF  
probe as it's maximum output is nominally 50uV PD (S9 cal test level). The 0.14V  
level given is 140mV (millivolt), or in the same designation as the XG1 in  uV 
(microvolt) is 140,000uV. As you see the XG1 is quite a long way down on  
what is needed as it's purpose in life is rather different.
 
It has been suggested to build the crystal test oscillator shown in K2  
Appendix E, Troubleshooting page 9 figure 2. Not having gone down this  road have 
not checked that even this test oscillator will make the  grade, but am pretty 
sure that it should. None of my various signal  generators do the job either 
as they do not have sufficient output  capability. Somewhere about 100mV PD 
seems the maximum for most standard RF  generators. There are more specialised RF 
generators available that can reach  the level required, though these are not 
as widely available in most ham's test  equipment stock.
 
Bob, G3VVT
K2 #4168