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LPF100 - LPF Unit using low-pass filter 5th order, have a SWR meter circuit. For Sale


LPF100 - LPF Unit using low-pass filter 5th order, have a SWR meter circuit.
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LPF100 - LPF Unit using low-pass filter 5th order, have a SWR meter circuit.:
$110.00

LPF100 using low-pass filter 5th order, 200W PEP, 1-60MHz.All of filters are for 50 ohm.
Have a built-in SWR meter circuit. Forward-Reflected display can be shown simultaneously on the dial indicators and LEDs.

Additionally, the board LPF100 have protection circuit if excess a predefined value of SWR. This protection circuit based on transistors VT1, VT2 and relay K16. Sensitivity of the circuit you can set by resistor R11. When the level exceeds the SWR Reflected, defined by resistor R11 value, the transistor VT1 will activate the relay K16. From relay K16, for example, you can cut off voltage for the input relay RX-TX in PA. Or cut off the supply voltage of the first stage PA. Protection scheme is with the \"sticky\" status, ieVT1 key state is hold until you will connect ESC contact with the ground or OFF/ON the main +13,8 V voltage for the protection board. Hi SWR indication LED, which is connected to the contacts SWR LED and +13,8V or in any other way, using the relay K16 contacts.

LPF100, the filter switching is implemented with 3 options:

1. to ground one of 01-07 contacts

2. +5-12v to LPF1-LPF7 contacts

3. +5v to D0-D3 contacts by following table -for this option requires solder DD3

Detailed description on link=>http://www.qsl.net/ut2fwor http://ut2fw.com/node/278

If you want a more rapid method of delivery, then you should choose the EMS.


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