48.0000mhz ~ 999.0000mhz Mcu Controlled Pll/frequency Generator Rx/tx Controller

GBP 48.00

  • Llanybydder, United Kingdom
  • Jan 29th
MICROPROCESSOR CONTROLLED PLL/RF UNIT TYPE 693-2 SPECIFICATIONS * Frequency coverage : 48.000 to 999.0000 MHz,depending on VCO module used,can be adopted to shorter frequency coverage to match VCO used. * On board standard MINI CIRCUITS POS series VCO modules(custom-made externally VCO's can be used). * On board precision TCXO 8Mhz module /PLL reference frequency unit. * Frequency entry(user selectable)  through keyboard or rotary encoder. * Frequency step(user selectable)  10Khz,12.5Khz,25Khz,50Khz,100Khz,250Khz. * Carrier frequency,channel spacing and channel memory indicated on a 2X16 dotmatrix alphanumeric LCD display. * 4X4 matrix keyboard for data entry. * Rotary encoder for quick frequency setting/changing. * All data stored in an EEPROM,retained after power switching off. * Based on powerful Texas 77C82/42 8bit processor(OTP device). * IF setting: +10.70Mhz, -10.70Mhz, +21.40Mhz (user selectable through on board dip switches,these can be altered to specific specs,when ordering the unit), -600Khz for repeater access. * On board low/high switching points,changing condition when a pre determined frequency is crossed,useful for interchanging VCOs e.t.c.),this point specified when ordering the unit. * Up/down scanning of frequency/memory channels. * Search stop capability. * 30 channel memory with recall. Power requirements: 12~14 V DC 120mA(display backlit on,VCO module on board). * Dimentions main board 125X62 mm,KEYBOARD 48X58X6 mm(keyboard type AK-1604-N-BWB  64X65X9 mm to order). * LCD display,keyboard,rotary encoder connected to main pc board though 20cm flat ribbon cable. VERY IMPORTANT!KINDLY READ PRIOR TO ANY ORDERING! 1.Unit can be delivered with one of the following MINI CIRCUITS VCO modules onboard: POS-75  48~80MHZ/+8dBm,needs external max.18v control voltage. POS-100  48~109 MHZ/+8.3dBm,needs external max18v control voltage. POS-150  65~159MHZ/+9.5dBm,needs external max18v control voltage. POS-200  90~207MHZ/+9.5dBm,needs external max 18v control voltage. POS-200P  83 ~ 127MHZ/+10dBm(7v control voltage). POS-300P  125 ~ 188MHZ/+10dBm(7v control voltage). POS-400  185 ~ 406MHZ/+5.5dBm,needs external max 18v control voltage POS-535  255 ~ 567MHZ/+1.5dBm,needs external max 18v control voltage. MINICIRCUITS HAS LONG DELIVERY TIMES WITH VCO MODULES,MOST OF THEM WE HAVE IN STOCK BUT BALANCE DEPENDS ON ORDERS RECEIVED.. OPERATING FREQUENCY WITH EXISTING VCO MODULES :48 TO 480MHZ! THE UNIT CAN BE DELIVERED WITH PIN SOCKETS FOR THE VCO MODULES,THIS WAY YOU CAN REMOVE/CHANGE THEM INSTANTLY IF NEEDED.KINDLY ASK FOR IT OTHERWISE ,IT WILL BE DELIVERED WITH VCO SOLDERED ON THE PC BOARD.   NOTE THAT THOSE VCOs WHICH NEED HIGHER THAN 12V DC WILL PERFECTLY WORK WITH YOUR UNIT BUT WITH PARTIAL FREQUENCY COVERAGE,JUST CHECK WITH MINI CIRCUITS TABLES FOR EVERY MODEL TO FIND OUT. 2. The max.available onboard control voltage for the VCO is the unit power supply voltage,needless say it MUST be perfectly stabilised and noise/hum free-so in case you chose a VCO module type which needs higher than the supply voltage,you should apply it externally,currect requirement is a few milliamps but MUST be stabilised and noise free. 3. In certain Receiver/Scanner applications,you should take into concideration the frequency coverage you want,for example ,if the IF frequency of a receiver is +21.40MHz and the maximum operating frequency of a specific/chosen  VCO is 188MHz,then the max.operating frequency of the receiver will be: 188-21.40=166.60MHz(the receiver local oscillator needs this space!)The same occurs on the low side of the frequency coverage,when the IF  needed is -10.70MHz for example. YOU CAN ORDER YOUR OWN IF FREQUENCY UPON ORDERING,JUST ASK IF POSSIBLE. The processor has two buffered outpouts,named A and B on the main printed circuit board,one is always high ,the other low.When crossing a certain frequency point-from 48 to 999MHZ- for example 300MHz,when crossing this frequency,these outputs change condition,the high becomes low and viceversa.This can be useful if somebody wants, for example ,to use two VCOs the one following the other...YOU CAN ORDER THIS CROSSING FREQUENCY UPON ORDERING. THE PROCESSOR CAN BE PROGRAMMED  TO COVER A SHORTER(NARROW) FREQUENCY SPECTRUM THAN THE MAXIMUM POSSIBLE TO SUIT CERTAIN APPLICATION OR TO MATCH THE VCO USED,THIS CANNOT  BE ALTERED AFTERWARDS AS THE PROCESSOR IS AN OTP DEVICE(ONE-TIME-PROGRAM). Unit will be delivered with type 154-1 keyboard,if you want type AK-1604-N-BWB,just ask for it. There is a detailed user description which accompanies the unit plus detailed electronic diagram.       Powered by eBay Turbo Lister Business seller information SYMKRILAG Contact details Landre Carmarthen Road Llanybydder Carmarthenshire SA409TX United Kingdom Return policy To qualify for a hassle-free return, you must pay with PayPal and have the item shipped to a US address. The item must be returned in the same condition it was received. See terms and conditions - opens in a new window or tab. After receiving the item, open a return within Return shipping 14 days You pay return shipping
Condition:
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. ...
Unit Quantity 1
MPN 693-2
Unit Type Unit
Country/Region of Manufacture United Kingdom
Brand SYMKRILAG

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