This page contains some info and data about my FT-1000 Mark 5 Field transceiver.
I recorded this plot with my HP 3586A Selective Voltmeter while the FT-1000 was driven by two tones at 1kHz and 1.2 kHz respectively, with an outpout power of 50W. It took 7 minutes to make the plot under computer control via the GPIB bus (Link 1). When set to 20 Hz bandwidth, the 3586 is pretty slow...
The tones are generated by my (old) Thinkpad 560x laptop computer through the sound card and my Tone Generator program (Link 2), driving the Packet input of the transceiver.
The carrier frequency was set to 28.6 MHz. It is down by almost 60dB from the modulation, good!
This is a plot of the output from the sound card (same settings as it was driving the FT-1000) recorded with the HP 3586A (the HP 3586A goes down to 50Hz carrier frequency, with as narrow as 20Hz resolution bandwidth so it makes a nice audio spectrum analyzer too.)
The frequency is in MHz (that's what my program is designed to output..) But in fact the plot is from 500 Hz to 2.5 kHz. I will try to redo it later with a nicer scale.
You will notice a few things:
This is the ON click.
This is the OFF click.
The transitions are way too fast, the ON transition is about 1mS, and the OFF transition is only about 300 uS. The recommended transition time for smooth CW is 3 to 5 mS.