Total posts : 45366
One change I noticed right away when the windowframe antenna was installed was a sharper emphasis in the high frequency audio region that was almost tinny. My subjective imagination even pictured the window screen adding its own resonance to the signal, but that would be a confusion between acoustic and electical resonance, so it really didn’t make sense. Then it hit me like a proverbial brick. This was the evidence of wider antenna bandwidth and since the SStran was jumpered for pre-emphasis, the high end was actually more than desirable. By removing the jumper the audio became very solid and in every way resembled larger AM signals. What a testimonial this may be for the SStran pre-emphasis, which I now presume actually compensates for low-bandwidth antennas!