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Tech808
Moderator
Username: Tech808
Post Number: 15831
Registered: 8-2002
| | Posted on Thursday, July 10, 2008 - 6:34 am: | 
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Texas Star General Operating Information
Models:
DX 400, DX 400V, DX 500, DX 500V, DX 667 and DX 667V
These transmitters are designed for mobile or base CW operation. Powered by the 12 volt vehicle battery or 12 volt regulated power supply, the maximum power output is less than 5 watts RMS. Frequency of operation is within the 10 meter band, determined by installation of a crystal into the oscillator board. The transmitters contain a transmit/receive relay and an output connector for the receiver to share the antenna and permit break-in operation.
OPERATION:
Red "POWER" Button turns the unit on and off.
White "REC AMP" Button turns the receive amplifier on to provide 6dB of gain for your receiver. This will work independently of the power button -- that is, the white button may be pressed "on" even when the red button is "off." The oscillator may be operated without any output to the antenna. You will be able to hear the signal in your receiver. This may be useful to adjust your electronic keyer or to practice your Morse Code "off the air."
Green Button reduces power on all models. On models DX 400V and DX 500V, it also activates the RF Output Knob.
Yellow "DELAY" Button reduces power and adds delay to the transmit/receive relay to accommodate different transmission rates for break-in keying operation. On models DX 400V and DX 500V, this button adds delay but does not reduce power.
RF Output Knob controls RF output level when the Green Button is engaged. On the DX 667V only, the RF Output knob is operational at all times.
Meter is an RF Relative Output Indicator and lights during transmission.
A Crystal made for series operation must be installed into the holes labeled "X-1" near the top of the oscillator board. The frequency should fall between 28.0 MHz and 29.7 MHz.
Key Jack for 1/8" miniature phone plug is located on the rear of the unit for connection of the telegraph key.
Power Cables are also located at the rear. The red lead connects to the positive side of the power supply, and the black lead connects to the negative side.
Antenna Connector (SO239) for 50 ohm antenna is located on the rear.
Radio Connector (SO239) for 50 ohm output to the receiver is also located on the rear.
SPECIFICATIONS:
Frequency Range
28.0 MHz to 29.7 MHz
Stability
50 parts per million, 0-50 degrees Celsius with typical quartz crystal
Power Output
< 5 watts
Voltage
13.6 volts DC
Amps
< 6
Impedance
50 ohms
Duty Cycle
100% at full output
Harmonics
> 30dB down
Dimensions
3-1/4"(H) x 6-5/8"(W) x 10-3/4"(D)
Weight
6 pounds
Lonnie~Tech808
CEF#0808/HAM#001/CVC#0002
Tech808@copperelectronics.com
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Dxmoto
New member
Username: Dxmoto
Post Number: 1
Registered: 11-2008
| | Posted on Sunday, November 30, 2008 - 9:59 pm: |
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I got a 667V so if i push in the Green button set the RF knob to 12-0clock 4 watts of power input would it be running say half the power ? |
Dxmoto
New member
Username: Dxmoto
Post Number: 2
Registered: 11-2008
| | Posted on Monday, December 01, 2008 - 6:49 pm: |
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I need to set up my Dx667V in back of my truck but need to leave it in the on position what I need to do is Turn it on with a toggle switch up front mounted on dash it's a pain in the neck to open up back of truck to turn amp off is ther a way to use a toggle switch with this amp running like 45amp current?I got a Heavy Duty toggle switch from radioshack rated at 50A 12VDC I found a smaller 1 would be perfect don't know the rateing on it, do i have to put a relay on the smaller toggle switch in order not to burn it out and what size relay? Amp will be wired direct to Battery with 10GA wire Ground to chassy.what is the best way to set it up ? Thank's |
Dxmoto
New member
Username: Dxmoto
Post Number: 4
Registered: 11-2008
| | Posted on Friday, December 05, 2008 - 9:05 pm: |
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AAH any body ???? |
Hotwire
Senior Member
Username: Hotwire
Post Number: 2688
Registered: 1-2005
| | Posted on Sunday, December 07, 2008 - 11:46 am: |
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You don't need a relay inline unless your worried that you would forget to shut the amp off when you park the truck.
I think the 50 amp toggle would work. Of course keydown is when the most power will be pulled through it. As long as the toggle stays cool it won't fall apart inside or burn up. Good place to find good heavy duty toggles is at the Trucker Store!
Kenny
CEF491
Reading the mail around Indianapolis Indiana!
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