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New Radio Features
Frequency Step Size
The radio now tunes in steps of 10, 100, 1000, 1250, 2500, 5000, 9000, 10000, and 100000
2
Hertz.
Pressing the SPEED key displays the current tuning step size. Rotate the tuning knob to
change the step size. Press the SPEED key again to select the new step size. The FAST LED
will light as before when you are set to the 100000 frequency step. The frequency step is now
independent of the mode setting.
Memory Locations
The amount of memory locations has been expanded from 16 to 128. You now can change
modes from memory to VCO retaining the current memory channel frequency and mode by
pressing the MW key.
Setup Mode Options
Upon power up and for two seconds you can enter a special radio setup mode by pressing the
MODE key. Pressing any other key or tuning the radio immediately terminates the setup waiting
period and returns the radio to normal operation performing the selected action. If available the
optionally installed display LED will be lite on power up for the duration of the two second
timeout.
Setup mode is indicated by the display showing a "u" followed by the firmware revision
number and by the optional LED being lite. In the setup mode the radio keys have alternate
functions.
Pressing the MODE key allows you to adjust the communication baud rate to other than the
default 57600 rate using the tuning knob. Pressing the mode key again returns to normal use
with the selected rate retained.
Pressing the V/M key sets the display refresh rate between fast "c1" and slow "c0". The default
setting is fast. Pressing V/M again returns to normal operation. Slow should only be used when
using a good regulated power supply. Fast is used for minimal radio noise using the Ten-Tec
supplied wall supply.
Pressing SPEED allows you to set a new display timeout interval. Dial the desired timeout in
seconds using the tuning knob with 0 meaning no timeout, default operation. Hit SPEED again
to select the new timeout. With a non-zero number is used the display will blank off after the
number of seconds selected if no key is pressed or no new frequency is tuned. Any action starts
the display again. There is no timeout on memory or frequency select functions. Display
blanking is used to remove the possible occurrence of display generated noise, most noticeable
when using unregulated power supplies.
2 Exact frequency tuning is obtained over the full receive frequency range from 100 KHz to 30 MHz for all tuning steps
1250 Hz and above. Exact 1000 Hz tuning steps are available from 100 KHz to 20.535 MHz. PLL tuning solutions to
frequencies with 100 Hz steps between 1 KHz or 1.25 KHz increments must be calculated using a factoring algorithm. In
98% of all cases a solution is available for the requested frequency. If a solution is not available the frequency is not tuned.
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