The Monitor Sensors 630m Transverter enables any Amateur Radio Station, equipped with a conventional HF transceiver, immediate, all mode, access to the new 472-479 kHz, 630m band.
$660USD + freight To order, email: firstname.lastname@example.org
|RF frequency range||472 to 479 kHz|
|IF frequency range||1802 to 1809 kHz (others available in the 160m band)|
|Transmission mode||CW, SSB, WSPR, and all other data modes|
|Output Power||50 Watts Continuous, 100% duty cycle @13.8V supply|
|Input and Output Impedance||50 Ohms|
|Supply voltage||13.8 VDC @ 15 Amps nominal, 10-16 VDC operational|
|Rx Noise Floor||-125 dBm (500Hz bandwidth)|
|Rx 3dB compression point||+15 dBm (Rx attenuator out)|
|Rx IF rejection||better than 75dB|
|Rx conversion gain||+6dB nominal|
|Roofing filter in-band ripple||+/- 1.5dB|
|Tx 3rd order IMD||-33 dB below PEP, typical at 50W output|
|Tx 5th order IMD||-45 dB below PEP, typical at 50W output|
|Tx harmonics and spurii||All better than -50dB|
|Tx conversion gain||+10dB nominal|
|Power input connector||2 x Anderson PP15/45|
|RF connectors||3 x SO239|
|PTT connectors||2 x RCA|
The Monitor Sensors 630m Transverter enables any Amateur Radio Station, equipped with a conventional HF transceiver, immediate, all mode, access to the new 472-479 kHz, 630m band. The receiver design incorporates a 7 pole Chebyshev filter, 7kHz wide roofing filter and a 5 pole Chebyshev filter in cascade before the double balanced, commutating mixer, fed by an ultra stable, temperature compensated, extremely low phase noise, MEMS local oscillator.
The mixer is followed by a Chebychev band pass filter into an ultra linear, low noise, current feedback, IF amplifier. A CW signal at -130dBm is readable at the output and yet the onset of compression is not reached until +11dBm. A front end 20dB attenuator can be switched in for even higher signal handling. Overall receiver gain is set to +6dB, or -14dBm with the attenuator active.
The transmitter input circuit incorporates a 0-14 dB switched step attenuator to prevent over driving. The same mixer and local oscillator are used on the transmit side. The PA uses 6 rugged lateral FETs in class AB push-pull to easily achieve the 50 watts rated output.
Lateral FETs are inherently linear and temperature stable. The transmitter can be run at full power, indefinitely, into a short or open circuit without any damage to the FETs. Transmit-receive switching is automatic with user selectable VOX delay. Alternatively the PTT line may be used. The Transverter employs extensive and accurate metering. Power input and output, SWR, Frequency, Attenuation in use, Temperature, Supply Voltage, Current and Resistance are displayed.
Transmission is inhibited if frequencies outside the 472-479 kHz band are detected. A tuning screen may be selected which displays SWR in digital and graphical form for easy antenna adjustment. The menu system is self explanatory and users report no manual is needed, although one is supplied.
A USB socket is provided for future code upgrades (free of charge) from the Monitor Sensors web site. The Transverter has been designed for the best possible protection against accidental mishaps. It will survive reverse polarity supply and the injection of 100 watts of HF into any of its ports whether in transmit or receive mode. If supply current exceeds 20 Amps, the supply is cut in 2 microseconds.
This electronic breaker can be reset by simply switching off and on again. The transmitter will shut down in the unlikely event that the internal heat sink reaches 100°C. The cooling fan is under the proportional control of the microcomputer and begins operation above 35°C. Any unusual operation will cause the screen to turn red and an appropriate warning will be displayed.
14 MHz OWA yagi beam – MOMOBEAM MONO 5 20 is a fullsize antenna for the band of 20 meters (14 MHz OWA beam) designed for maximum performance. M... Read more
Arsctl is a server side application which makes all your antenna rotators available on a network. Arsctl allows you to conveniently control your rotat... Read more
Update! Dear readers 1 april fool : Source http://www.aliexpress.com.jv7u.clonezone.link/uv7300 Real Radio Chine KN-920: http://rigreference.com/rig... Read more
As an easy introductory solar project I purchased Harbor Freight’s 45 watt solar kit for my ham radio use. Read more
A high-quality external speaker that matches the IC-7610 best. Dual watch ® is also comfortable with input switching . Dual watch can be done comfort... Read more
To celebrate the marriage of Great Britain’s Prince Harry to American actress Meghan Markle, special event call sign GR9RW will be on the air May 19 –... Read more
Philae Jubilation at European Space Agency as signal picked up after comet lander goes into sleep when solar-powered battery ran flat in November A... Read more