UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

sobell1980 · 8th Oct 2014, 4:27 pm

Obviously I have misunderstood the use of my sig gen at the RF stages. I could not tell you what the attenuation was set to when i was injecting a RF signal. I was turning it up and down when it was too loud or quiet where as i should have been using the strength of the tone in various points to aid my diagnosis.
If anyone could run through what i should be doing with the sig gen on the RF side? What i should set my sig gen to etc and attenuation.Phil, in your post #65, you say about setting the sig gen to 1000khz and the radio to 300m. Why these figures? What is the relationship between 1000 khz and 300m? Is this a standard test setting . Just trying to get my head around all this new test gear. Many thanks for your time and help.
Dave.

8th Oct 2014, 4:27 pm	#69
sobell1980 Octode Join Date: May 2011 Location: Bromyard, Herefordshire, UK. Posts: 1,241	Re: Roberts RMB Problems Obviously I have misunderstood the use of my sig gen at the RF stages. I could not tell you what the attenuation was set to when i was injecting a RF signal. I was turning it up and down when it was too loud or quiet where as i should have been using the strength of the tone in various points to aid my diagnosis. If anyone could run through what i should be doing with the sig gen on the RF side? What i should set my sig gen to etc and attenuation.Phil, in your post #65, you say about setting the sig gen to 1000khz and the radio to 300m. Why these figures? What is the relationship between 1000 khz and 300m? Is this a standard test setting . Just trying to get my head around all this new test gear. Many thanks for your time and help. Dave.