MAGNUM
DELTAFORCE

COMMUNICATE WITH FORCE


The MAGNUM DELTAFORCE 10 Meter Mobile Multimode Transceiver was made by RF LIMITED (MAGNUM INTERNATIONAL) in the Philippines.

The DELTAFORCE was first seen by Cobraworxshopz around 1998, various computer "CGi" graffic style adverts were marketed by RF LIMITED, 
an example of one advert from back then is shown below.




From the CGi adverts the DELTAFORCE looks very impressive, the retro-classic Cobra 148 chrome-look, coupled with the Ranger RCI-2950DX style back-lit 
LCD display is very asthetically pleasing.  
 
After learning of the intended specification, Cobraworxshopz Technicians eagerly awaited the delivery of a brand NEW RF LIMITED 
MAGNUM DELTAFORCE.



Straight out-of-the-box the DELTAFORCE looked as good as the computer generated versions had suggested, interestingly the box displayed 
the same CGi picture.

FIRST IMPRESSIONS
 



At first glance the DELTAFORCE chrome bezel has the centre "step" similar to the Connex 4800 DXL-E. The S/RF meter and LCD back-lights 
also illuminate the rotary controls, which is useful but not by design. 
A 5-digit LCD display, with frequency counter (indicator - not VCO locked) and capable of displaying, bands, modes (AM,FM,SSB etc), Modulation meter 
(bar-graph style) and various other functions. 
The DELTAFORCE specification is impressive, Transmit TX audio is truly superb on all modes, using the stock MAGNUM microphone. 
The supplied microphone is an electret-condenser style power mic with frequency up/down buttons to control the Transceivers frequency and scanning function.
The on-board Digital Echo chamber is also of excellent audio quality, with fully adjustable echo volume and delay speed, lush reverb to several seconds delay, virtually on par with the Astatic EchoMax and MobileMax units. 

 

The DELTAFORCE front panel has some interesting features, 
Superstar SS-3900 style chrome knobs and six momentary push-buttons that have a variety of functions, each displayed on the large LCD.

DELTAFORCE 
features and functions:

Microprocessor Controlled
Power On/Off Switch
Volume Control
Squelch Control
Mic Gain Control
RF Gain Control
RX Clarifier (R.I.T) Control
Roger Bleep Switch (1Khz Tone)
S/RF - CAL - SWR Switch
PA Switch (Public Address)
Variable RF Power Control
SWR Calibrate Control
Digital Echo On/Off Control
Digital Echo Volume Control
Digital Echo Delay Control (Lush Reverb - Several Seconds)
AMT (All-Mode Variable TalkBack to monitor TX audio)
TX Modulation Meter on LCD (Bar graph style)
Channel Selector 40-Position Rotary Control (small type)
Function Switches ( x 6 momentary style)
Frequency Resoloution "Step" Function (1Khz, 10Khz, 100Khz)
NB Function (Noise Blanker)
Call Channel Function (28.400Mhz)
LCD & S/RF Backlight Dimmer Function
5 x Memory Channels (Stores Frequency And MODE !!)
LCR Function (Last Channel Recall)
Scan Function +/- (Frequency or Memory Scanning)
Shift Function (Repeater Offset Frequency 100Khz)
RPT Function (Repeater Offset Direction + or -)
Mode Function (AM,FM,USB,LSB)
M.Load Function (Memory Load or Recall)
M.Save Function (Memory Save)
Programming Tone (Beeps when CPU is Programmed)
Frequency Coverage 25.615Mhz - 29.655Mhz
Bands "D-L" on the 14-Band chart
Dual-RF-Outputs 
15 Watts Carrier 30 Watts SSB PEP
Left hand side mounted 6-pin Mic socket 
SO-239 Aerial Socket
Extension Speaker Socket 3.5mm Jack
PA Socket 3.5mm Jack
Wired 2-Pin DC Power Cable Flying Lead.

INSIDE

 Inside the DELTAFORCE reveals the large printed circuit board mounted on the  side of the chassis used for the Digital Echo and TalkBack components.
Apart from the Digital Echo wiring loom the DELTAFORCE is very tidy inside with plug and socket style connectors mounted on the chassis. All the controls are the NEW style small "square" rotary type, the channel selector is seen top right of the picture below and is about a quarter of the size of the original 148 selector.





On closer inspection the DELTAFORCE is based around the 
Uniden PB-010AB chassis. Using a Microprocessor "SY204" IC501  (CPU) mounted behind the LCD instead of the usual Phase Locked Loop IC (PLL) and Adders for all the frequency and associated transceiver functions. Crystal filter installed is a 10M4DR and the AM regulator is upgraded along with Dual RF output transistors 




The DELTAFORCE rear chassis has possibly the largest heatsink installed on any 10m Transceiver and is very heavy duty, ideal for cooling the dual output transistors. Also mounted on the rear chassis is SO-239 aerial socket, CW KEY 3.5mm jack socket, EXTension SPeaker 3.5mm jack socket and permanently connected DC power cable, shown below.  



The metal serial number plate is rivited to the rear of the chassis and reads; 
DELTAFORCE 
MAGNUM 
AM / FM / SSB / CW 10 METER MOBILE 
SERIAL NO 91200712.
MADE IN PHILIPPINES



Later production models of the DELTAFORCE were given a new look with
an ICE-BLUE make-over for S/RF Meter and LCD.



MAGNUM
OMEGAFORCE
S45

 MAGNUM produced the OMEGAFORCE S45 a few years after the DELTAFORCE, which was essentially the same Transceiver. Several changes to the Face Plate are noticable. The introduction of a Black coloured "border" around five of the buttons and the addition of numbers 1-9 
surrounding most of the rotary controls. MagnumRadio.com was printed above the S/RF Meter, OMEGAFORCE S45 above the LCD and MAGNUM printed top-bottom on the right hand edge of the Face Plate.

 

The OMEGAFORCE S45 was also supplied in an ICE-BLUE version




The OMEGAFORCE S45 had slightly more RF output power at 50 watts PEP compared to the DELTAFORCE's 30 watts PEP RF output.