34268Re: [Heathkit:Yahoo] Waveform characteristics of an SG-8 RF signal generator?
- Jul 4, 2014This is normal. The SG-8 does not have a sine wave RF output. This is the reason that you can use the harmonics of the RF output to reach into higher bands.Regarding the modulation, clean the switches thoroughly with a good quality contact cleaner. You may as well clean the band switch and output attenuator as well.On Fri, Jul 4, 2014 at 8:54 AM, 'Ray, W4BYG' w4byg@... [heathkit] <email@example.com> wrote:I have an SG-8 picked up from a hamfest.I brought it up slowly with a variable AC supply. It works after a fashion, but looking at the waveforms on my Tektronix 485, the SG-8 thru the various ranges, produces substantial waveform distortions mostly in the bottom half of the cycle, often showing a double hump or dip there. This is with the output terminated or unterminated. I do not see any significant low frequency hum in it's output.Is this a normal characteristic of the SG-8? Or, is there some suspect component that needs to be looked at?Also, the internal modulation doesn't seem to be working.Tube substitutions doesn't seem to help.Any experienced suggestions?Your attention is appreciated.Ray, W4BYG--Don Peterson
7172 Regional Street
Dublin, CA 94568925-548-6404
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