ApexRadio Inc. 35GR User Manual

35GR  reference manual 

 

 

  

 

DIAL (manual tune) , Memory recall, Scanning Memory, Select scanning, Dial search, 

Programming search 

FM, AM, USB, LSB, CW, AUTO 

AUTO:   The receiver will automatically select the appropriate receive mode, IFBW, step 

frequency, and others. Of course, should you wish then receive mode, IFBW, step frequency 

& others may be manually changed when required. 

I.F. BANDWIDTH   

An appropriate IF filter is automatically selected when AUTO is engaged.

 

Automatic Gain Control. In FM mode the options are AGC MID / OFF and in other modes are 

OFF, FAST, MID and SLOW.   

The 35GR features an RF stepped attenuator and preamplifier. LCD legends “ATT  00  dB” 

and “AMP” are used to display the settings in use. 

Below 30 MHz:    A switchable RF preamplifier is utilized making the available selection of 

ON & OFF 

Above 1100MHz: . The attenuator is disabled to minimise signal loss through the switching 

unit... always set to 0dB. The “AMP” legend is always displayed. 

Storing receive data into memory.    It is very convenient to store commonly used frequencies

into a memory bank along with mode and attenuator status, this saves having to key the data 

in over and over again. 

Memory recall is very straightforward and quick when compared to retyping all data. 

During SCAN the 35GR automatically recalls each memory channel which contains data in 

numeric order and monitors them for activity. When an active memory channel is located 

(when a signal is found and the squelch is open) the receiver will temporarily stop scanning.

Memory banks may be LINKED and UNLINKED to effectively make larger or smaller groups 

of memories which may be scanned together. CHANNEL PASS  may be used whereby 

memory channels can be skipped when not required (such as when permanently busy), and 

may be easily reinstated at a later time. 

SELECT SCAN enables you to make a single short list of interesting memory channels from 

all memory banks to be scanned as a separate function. This reduces the need to PASS, 

LINK and UNLINK banks and channels. 

Another special form of scanning is PRIORITY where a special channel is scanned for activity 

every interval time (1 -60 seconds). 

The 35GR has a SEARCH mode whereby an upper and lower frequency limit may be 

defined and the 35GR instructed to look for activity on all frequencies in predetermined step 

size in an upward or downward direction. The mode and channel step will change 

automatically when set to the default of AUTOMODE but data may be specified specifically if 

preferred. It is important that you do not confuse SEARCH and SCAN modes. 

Linking function of Memory banks and Search banks.   

The squelch control is used to eliminate unwanted background noise when monitoring a 

normally inactive frequency and is also used by the 35GR microprocessor to determine when 

a channel is active  (busy).  The receiver cannot scan or search when the background 

noise is present. 

The CONFIG menu is used to make many changes to operations of the receiver, the less 

frequently accessed items are held here to minimize the number of second function keys 

thereby simplifying operation. 

Audio Filters   

The 35GR is equipped with an independent real time clock with timer function. It is 24hr 

format displaying hours, minutes and seconds.