In the 7515 & 7727 range of radios i have found that the early models have no letter designation, hence "I" have given them the letter A.
My findings show the early models are a 6 channel where the later models B, C, TB are all 10 channel models, this also reflected in the
Service Manual.
Alternative
control heads
LSB
operation~ in addition to USB)
Impulse
noise limiter
Clarifier*
Two-tone
call encoder*
Automatic
two frequency simplex*
Digital
channel identity
The
type 7727-TB transceiver is an alternative to the type 7727-C. The unit
provides an identical performance capability but to overcome the under-dash
space restrictions present in many modern motor vehicles this transceiver
package has been specifically designed to permit trunk boot) mounting.
The
design provides alternative control head configurations which incorporate a
digital
display of channel identity and also permit inclusion of selective call
encode/decode
controls.
Code 617 control head
This
is for use with an external loudspeaker
and
in consequence it is physically small and ideal for under-dash vehicle
mounting. Each control head is shipped with a separate hangup loudspeaker
(code 625) for installation in the most convenient position for the vehicle
operator.
Code 619 control head
This
alternative unit uses an internal
loudspeaker
and therefore it is larger than the code 617 head, however it remains small
enough
for under-dash mounting in many vehicles.
Both
heads provide all transceiver control functions including, where required
selective call; they are delivered with a 6 metre (other lengths to order)
interface cable which has factory fitted connectors at each end. A mute
facility, operator selectable, effectively eliminates background (atmospheric)
noise in the absence of a signal.
An
impulse noise limiter virtually removes interference from ignition and other
similar sources during signal reception periods. A digital selective call
facility based on CCIR recommendation 493 (Geneva 1972) may be fitted to the
transceiver This can provide both encode only or encode/dec ode capabilities
Separate product data sheets provide specific detail
Broadband
block filtering in the transmitter output circuit means that the transceiver
can be changed from one vehicle to another without technician adjustment.
The
transceiver is produced and guaranteed for 12 months by an Australian owned
and operated company which remains committed to the design, manufacture and
marketing of HF SSB communications products.
Antennas
The
transceiver may be used with any 50 ohm antenna system.
For
mobile applications
it is most frequently installed in conjunction with code 300 series
multi-fm uency (tapped) helical whip antennas or with the code 311 series
automatic frequency select multi-channel whip antennas
Loudspeaker
(Code 625)
Size
and weight (with cradle)
140
mm W x 123 mm H x 64 mm D, 600 g
Colour
Black
Transceiver
Frequency range
2—16
MHz
Crystal capacity
10
Channel capacity
1
0. Any combination of single and two frequency Simplex channels is available
within the limits of crystal capacity
Operating mode
SSB
(J3E)
Transmitter power output
100
wafts PEP J3E
Primary voltage
1
2 or 24V DC nominal, positive or negative ground. Case is electrically
isolated. Reverse polarity protected
Primary power
Receive
0.3A no signal)
Transmit:
(J3E) 1 2V BA average, 24V 3A average
Size and weight
288
mm W x 93 mm H x 308 mm D, 4.2 kg
Colour
Case:
Matt silver-grey
Pane
: Mat black, white lettering
Accessories
standard)
Hand
PTT microphone, DC power cord assembly 4 metres), Operating instructions,
Installation handbook
Control Heads
Controls
Power
on/off, Volume and Mute on/off,
Channel
select, Mode—Tune/USB/LSB,
Clarifier
, Emergency call*, Selective calling
controls
*optional
Indicator
lamp
Transmit
output
Size
and weight
Code
6l7
178
mm W x 72 mm H x 105 mm D; 530 g
Code
619 (with cradle)
178
mm W x 72mm H x l5l mm D; 760g
Colours
Case:
Matt silver-grey
Panel:
Mail black, white lettering
Accessories
(standard)
Mounting
cradle(s), Control cable (6 m) with factory fitted connectors.
Options
AS Fit antenna selector/tuner control socket
BA Fit operating channel single frequency simplex (specify frequency)
BB Fit operating channel two frequency simplex (specify transmit and receive frequencies)
CA Fit clarifier control — receive only
CB Fit clarifier control —transmit and receive
E Fit two-tone call encoder
L Fit for LSB operation only (in Lieu of USB which is standard fit)
LU Fit for LSB operation in addition to USB
PB Fit balanced audio output. Low or high impedance (specify when ordering)
PS Fit selective call interface
SE1 Fit fixed identity selective call encoder
SE2 Fit programmable internal preset) selective call encoder
SDE Fit programmable internal preset) selective call encoder/decoder
Accessories code
059 Service manual for type 7727-TB
108 Vehicle mounting cradle
112 Vehicle installation hardware kit
600 Telephone handset complete with cable and connector
617 Extended local control head. Vehicle mounting. Includes control cable (6 metres) with factory fitted connectors, mounting cradles and external loudspeaker
619 Extended local control head. Vehicle mounting. Includes control cable (6 metres) with factory fitted connectors, mounting cradle and internal loudspeaker
704 Vehicle interference suppression kit
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