Just aquired a signal generator Model # HP8656A. does any one know if it can be used to align ssb using 2 tone? thanks.
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signal generator help
- Thread starter kaos513
- Start date
NO. It is an RF generator. You need an AUDIO generator to generate a two-tone test. The two tone MUST be equal in amplitude and not harmonically related. 1KHz and 1.7 KHz are commonly used.
Use your smartphone as the AF generator;
https://testtone.en.aptoide.com/
https://play.google.com/store/apps/details?id=com.nchsoftware.tonegen_free&hl=en
https://testtone.en.aptoide.com/
https://play.google.com/store/apps/details?id=com.nchsoftware.tonegen_free&hl=en
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The best way to do that is with test equipment that is designed for it. Like the B&K test centers, and they need to be calibrated too.
They have the dual tone function built in as far as the 500 mv you need a scope to read that and need to know what point to look at.
You also need to know is that 500 mv rms or peak to peak.
They have the dual tone function built in as far as the 500 mv you need a scope to read that and need to know what point to look at.
You also need to know is that 500 mv rms or peak to peak.
Above from the Cobra 148 service manual as found on CBTricks.com
Link Below:
http://www.cbtricks.com/radios/cobra/148gtl/graphics/cobra_148_gtl_sm_pg48_pg63.pdf
73
David
Without a true, powered PEP watt meter, looking for exact accuracy in the modulation mv is a bit of a waste of time. Just set the ALC so that most of your word peaks on SSB stay within the 12 watt PEP level and call it a day. Precision is more important with things like the bias.