LDG Z-817H Operation Manual - page 16
PAGE 16
Using The Z-817H With Other Radios
Although the Z-817H is designed to integrate seamlessly with the Yaesu FT-817 radio, it can
also be used to tune other QRP radios with external amplifiers, so long as the maximum power
output is kept under 50 watts.
Additionally, because there is no frequency counter on the Z-817H, memory recall tuning
works slightly differently. The button push sequence is the same as for tuning with an FT-817,
but memories are stored sequentially rather than stored in a memory associated with the
operating frequency. Over 200 sequential memories are available, and the Z-817H searches the
memory from most recently used frequencies to least frequently used, so memory recall in most
cases is still nearly instantaneous.
Because the Z-817H’s CAT interface only works with FT-817 radios, the Z-817H will not be
able to automatically key the radio. Thus, you must key the radio during tuning.
Tuning operation is the same as for tuning with an FT-817, except that you must key the
radio manually during the entire tuning process. CW or AM modes work best for tuning, but it is
possible to tune in other modes as long as a carrier is present. Be sure to bypass the external
amplifier first before tuning, then re-enable it once tuning is complete.
Status LED
The
Status LED
is used to indicate both operating modes, tuning status, and error codes. The
following table lists the LED status codes and their meaning.
LED Indication
Meaning
Status LED on.
Tuner is tuning.
Status LED blinks once.
Tuner in “Active” mode.
Status LED blinks three times.
Tuner is bypassed.
Status LED goes out, then SWR LED on
steady for 1 second.
Tuning cycle is complete, tuning match is
less than 1.5:1 SWR.
Status LED goes out, then SWR LED
blinks five times.
Tuning cycle is complete, tuning match is
between 1.5 and 3.0:1
Status LED goes out, no SWR LED.
Tuning cycle failed, match greater than
3.0:1.
Status LED blinks 4 times.
RF lost during tune.
Status LED blinks 5 times.
No RF detected.