In a message dated 12/03/05 22:33:23 GMT Standard Time, [EMAIL PROTECTED] 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 _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
