27
&
Note: If [MK-CF] is used with the companion radio set to “Other”, the IF frequency employed will be
changed from the default of 10.7 MHz. In normal use, this should be avoided, however this may be
useful if the exact centre frequency of the companion radio is not known.
Select menu 6... analysis selection
6 PREV MAX AVR - - NEXT
To select MAXIMUM trace, press
MAX
The maximum height of traces will be frozen on the display.
This will result in ‘peaks’ where transmissions have taken place, one side effect is that the baseline will
tend to build-up a 5 to 10dB solid bar due to random background noise. MAX is a useful facility to ‘trap’
occasional transmissions over a long time-scale and to check on band allocation for transmission
licence issuers. Press
MAX
a second time to restore a normal trace. A reverse contrast “MAX”
legend confirms selection when in use.
To select AVERAGE trace, press
AVR
The average height of traces are calculated and displayed
on the LCD. This causes the display to be a little sluggish at detecting transmissions when they first
appear but permits them to remain visible for longer when the transmission stops. The effect is a ‘wave’
of activity, useful for assessing band activity in a relatively short period of time.
Once activated, the buffer size must be allocated between 2 and 32 frames inclusive. A reverse legend
“AVR” is displayed on the LCD to confirm operation. While the buffer is loading, the number of frames is
indicated until the programmed number has been sampled, after this point the specified number of
frames will be averaged on an on-going basis. Press
AVR
a second time to restore a normal trace.
A reverse contrast “AVR” legend confirms selection when in use.
Select menu 7... screen position
7 PREV <<- <- -> ->> NEXT
In channel scope mode:
PREV - <- -> - NEXT
<<-
Moves the centre frequency down by half the span. For example, if the span is set to 10000 kHz
(10 MHz), the centre frequency will be lowered by 5000 kHz (5 MHz)... so that a centre frequency of
123 MHz would become 118 MHz.
&
Note: Not available in channel scope mode.
<-
Moves the centre frequency down one channel step. i.e. if the receive frequency is 125 MHz and step is
25 kHz, the centre frequency will move down by 25 kHz to 124.975 MHz.
->
Moves the centre frequency up one channel step. i.e. if the receive frequency is 125.000 MHz and step
is 25 kHz, the centre frequency will move up 25 kHz to 125.025 MHz.
->>
Moves the centre frequency upward by half the span. For example, if the span is set to 10000 kHz (10
MHz), the centre frequency will be increased by 5000 kHz (5 MHz)... so that a centre frequency of 123
MHz would become 128 MHz.
&
Note: Not available in channel scope mode.
Section 5-1
