[AMRadio] Turns Ratio Question

Geoff/W5OMR ars.w5omr at gmail.com
Sat Nov 17 10:56:32 EST 2007

jeremy-ca wrote:
> Im still well into learning mode as I stumble around my audio 
> requirements.
> Looking at a modulation xfmr that is marked 4596VCT RMS Primary and 
> 3747V RMS secondary. This appears to be a 0.82:1 voltage step down or 
> a .64 impedance step down if I did the math right. Question is what 
> sort of wiggle room is there in both impedance ratios and actual 
> voltages used?
> The power rating is way more than sufficient for my needs and it is 
> rated down to 50 Hz. I can use modulator tubes to supply sufficient 
> power to overcome a reasonable mismatch but what is reasonable and how 
> does the mismatch affect distortion? I havent been able to find any 
> formulas or graphs.

Try this educational link.

Driving your AM Rig without a scope, 
is like driving your car at night, without headlights. (K4KYV)

73 = Best Regards,

More information about the AMRadio mailing list

This page last updated 24 Feb 2018.