Related Manuals for Linear AMP GEMINI HF-1K
Summary of Contents for Linear AMP GEMINI HF-1K
- Page 1 Churchstoke, Montgomery, Powys, SY15 6TP, UK Phone +44 (0)1588 620126 e‐mail support@linearamp.co.uk www.linearamp.co.uk GEMINI HF‐1K 472KHz‐50MHz Linear Amplifier SHORT FORM OPERATING MANUAL ...
- Page 2 Congratulations on purchasing your UK made Linear Amp Gemini HF-1K linear amplifier. The amplifier covers all Amateur bands from 472KHz** to 50MHz (including 5MHz) The amplifier is housed in an all aluminium chassis. Front and rear panels are anodised finish. Top and bottom chassis panels are epoxy powder coated.
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Page 3: Getting Going
Getting going The Gemini HF-1K is essentially a fully automatic amplifier. Specifically the amplifier automatically senses the frequency of transmission of the driving transceiver and band switches wihout requiring either user input or any CAT or other interface. - Page 4 Positioning of the Amplifier The amplifier should be positioned in such a way that cooling is not restricted and away from direct sunlight. Air is drawn into the underside of the unit and out of the rear and out of the top at the back. It is important that you do not, for instance, stand the unit on or put loose paper underneath or on top of the amplifier as this could cover the intake grills and restrict the cooling.
- Page 5 Powering up Mains power switch on the front panel to on. The amplfier will boot up. The screen will initalise with the Linear Amp logo and then after approximately 10 seconds ‘DX’ will be announced in CW and the screen will change to the operating screen.
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Page 6: Operation
Note the nature of the solid state output switching circuit in the Gemini HF-1K is such that there is NO noise associated with going to tx. The only time you will hear relays click is during band change or antanna change. -
Page 7: Band Selection
Band selection The Gemini HF-1K has fully automatic band selection. As you transmit the amplifier detects the frequency of the tranmission, checks to see if it is within the current band and if not changes the band of the amplifier automatically. - Page 8 VSWR The amplifier has a high VSWR lockout circuit built in. If the output VSWR exceeds 2.5:1 then this will be activated causing the high VSWR warning pop- up to appear on the screen. The amplifier will go to receive. You can clear the trip by touching the trip pop-up on the screen.
- Page 9 0dBm output The Gemini HF-1K is fitted with a low level 50R signal ouput marked 0dBm on the rear panel. This samples the RF output from the amplifier and can be used to monitor signal quality or for integration as a predistortion output for SDR transceivers.
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Page 10: Specifications
SPECIFICATIONS Gemini HF-1K Valid operating frequencies: 460 – 479kHz* 1.8 – 2.0MHz 3.5 – 4MHz 5.0 – 5.5MHz 7.0 – 7.3MHz 10.1 – 10.2MHz 14.0 – 14.4MHz 18.0 – 18.2MHz 21.0 - 21.5MHz 24.8 – 25.0MHz 28.0 – 29.7MHz 50.0 – 54.0MHz *when used with an external low pass filter unit (not supplied). -
Page 11: Certificate Of Conformity
CERTIFICATE OF CONFORMITY The DX Shop Limited / Linear Amp UK Ltd hereby declare that the following products, Linear amplifier Gemini HF-1K fully meet technical specifications according to the following EU directives: 06/95/EC, 2004/108/EC and 99/5/EC: EN 301 783-1 V1.1.1 (2000-09), EN 301 783-2 V1.1.1 (2000-09 EN 301 489-1 V1.6.1 (2005-09), EN 301 489-15 V1.2.1 (2002-08) -
Page 12: Warranty
Linear Amp is not responsible for damage to other equipment or property or any other consequential or incidental damage of any kind. Linear Amp UK Ltd is a trading style of The DX Shop Limited, Registered in England & Wales, Registration No 07782419.
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