Amateur Radio Site Of  VE1XYL & VE1ALQ, or VE9DW  

See the New Versatile4 GPS PLL Board Below. See price list below, no additional cost for Gain Control

  CPLD Original Version 1, Versatile1 PLL Board is available once more, thanks to DEMI being up and running again, and can be seen on this Jupiter GPS Page.

  Image can be seen here as well, connected for Versatile 2 or 4.

  Anyone wishing to purchase the Origional Version 1 PLL Versatile1 board please contact me for prices please. Using this E-mail Form:

  CPLD Versatile-2 PLL Synthesizer *N (LO), Binary Selected Dividable from 50 to 2047, and *R* (Ref.) Dividable by:
100, 95, 90, 85, 80, 75, 70, 65, 60, 55, 50, 45, 40, 35, 30, & 25. To See Schematic of the latest Versatile Version look here, also included is revision (Mod) to existing Versatile Boards.

   New PLL Version 4 PLL Board For Versatile1, 2 & 4 Code

Physical Comparison Between Version1 & Version4 PLL Board.

  Here is an EXCEL Spread Sheet to Determine Your Division Ratios. OpenOffice2 will work just as well as MS Office.     http://www.openoffice.org/

  This New Board will accommodate any of Luis's Universal, or Classic, and 1pps .POF files as they exists from earlier design using the  EPM3032, or EPM3064 Altera Devices, but with the very successful saturating PNP Front End design. Also the 10Khz Ref input POF File.

  I have heard this System at 47Ghz, and it sounds like a free Running XTAL, there was a slight warble in two of the VCXO's, but NOT on another Frequency West Brick at 47Ghz. That Warble was present with, or without, the PLL attached and Locked, Obviously different XTAL's, the Regulator was suspect at this Freq. but the regulator has since been ruled out.

  Examples of 47Ghz LO with and without Warble, Waddle, or whatever you wish to call it

  Video and PDF Files To help answer at least as few of the Questions??

Image of new PLL Board Schematic. Download PDF File of New PLL Board

  These were 106Mhz, 5th Overtone XTAL's Multiplied ~442 time to reach the LO for 144Mhz IF. I hope to have some Audio Files available soon.

  This new PLL board offers and adjustable Tuning Voltage from 2 to approx. 10VDC. Adjustable Gain is also available on the latest PLL Board. This allows for a much broader selection of Varicaps in your VCXO, and well as XTAL *Q*, such as 7th overtone. This PLL also allows for changing the V-tune line Voltage gain to what ever suites your application.

Keep in Mind :

For a good 5th overtone, 95 to 120 MHz low phase noise crystal, typical specs are as follows:

Static capacitance = 1.7 pf, motional capacitance  = 0.24 ff, motional inductance = 10.25 mH,     Q  approximates 120,000, typical phase   noise @ 100 hz approximates 115-135 db. While tending to maximize Q for low phase noise, it is not the only design criteria. Most oscillator designers utilize high drive & low motional capacitance for low phase noise. This means that the crystal has little pull for setting frequency. For example: the crystals depicted above approximate 0.1-0.2 ppm/pf pull.

  The crystal pull ability is a function of the inverse of the overtone squared. If the pull as a fundamental is X, the pull for a 3rd OT is X/9, the pull for a 5th OT is X/25, 7th OT X/49, etc. Low phase noise, low ageing, etc all work best on overtone crystals.

  Now for some DEMI Micro-LO 7th high Q overtone Osc's. Demo films below.

  Here is a FLASH file of a DEMI Micro-LO that is exceptionally stable and locked solid for days.

  This is an FLASH Movie of the 6cm DEMI Micro-LO running at 187.200000Mhz but packaged and ready to install, after I remove my Frequency West Brick. Also shown in the background is the Micro-LO above packaged and ready for 2304.

  These are all 7th overtone XTAL's and very high Q as all 7th overtone are.

  Coupling to Micro-LO is via a small Audio Cable through a 220R + 8.2pF Cap in Series on the Micro-LO Board and across a 51R Resister on the PLL Board,   extremely small signal required. This applies if you are using 10Mhz or 10Khz Reference, 10Khz as applied from Jupiter Interface & GPS Engine

  Under Side Of 10Ghz DEMI Micro-LO Board as connected to PLL

  An Excellent Examle of this is the DEMI Micro-LO Osc.using 7th Overtone that can be hindered by the 2nd & 3rd Harmonic. More information to Follow, I have 3 that     This configuration has been locked for weeks now on for a couple of weeks

      Image showing Harmonic Filters

   Image Showing Solid Locking approach

   Solder Side of New Versatile4 PLL Board

  Newly Populated & Programmed CPLD Board. Please NOTE: This board accepts Male Headers and Shorting Jumpers in exact numerical order and , no more Wire Jumpers required

  Price of this New Version 4 Versatile1, 2 or 4 PLL Board is $107.50, INCLUDING SHIPPING Priority Post, To Place an Order

A KIT is being considered, and will wait to see what REQUESTS there are for a KIT

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   Price of this Version 1 Versatile1 PLL Board completely assembled and tested is $79.00, plus Priority Post Shipping of $11.00USD

 Folks I make nearly nothing on these Boards, and spend many hours, purchasing compoents, maintaining inventory and assembling, pogramming and  testing final product.  

  Image of Basic Layout of the newest board

 

 

This board also offers a -(minus) 2 to 10VDC output as well for those who may need that function for 10Mhz & Several 100Mhz Osc. that require a Negative going Voltage....otherwise consider it as option perhasp not Required.

 

If You need a Board (s), please contact me.

This is a NEW extremely versatile PLL system using Binary Coded Jumpers to select VCXO, or XTAL Freq, division at both the LO & Ref Freq. Code was developed by Luis, CT1DMK, it is amazing to look at,and watch this device in operation, and very easily programmed following the       Loading of the Code, which is JTAG Programmed the same as earlier Ref-Lock Version. This system will operate to 350Mhz without Pre-Scalar as well.

Flash movie of a DEMI Micro-LO, very impressive using this new board

This New Design eliminates the many short Falls of the of the Ref-Lock version as it was called, 94.666667Mhz is just as clean as 106Mhz, 106.5Mhz, or 106.8000Mhz, 120.000Mhz, etc, etc. Example of Programming Jumpers are shown on the schematics.

The Power Supply configuration remains the same as Luis's origional, with one exception: The +5V Regulator MUST be changed to at least a       78M05 (500mA) device. the total current consumption is in the order of 120mA with the new Microwave Input PNP's consuming approx. 20 to 24mA at each input.

VCXO, Or XTAL Freq. is Dividable from: 50 to 2047 by Binary selection of n0 thorugh n14....this means 16383
division possibilities. Minimum Division = 50 and Maximum Division = 2047 for LO input port, or n0 to n14, 50 to 2047 and Ref. 100, 95, 90, 85, 80, 75, 70, 65, 60, 55, 50, 45, 40, 35, 30, & 25,

Grab a PDF File that may be less congested and MORE informative, hi

Note the LO and Ref Freq. Input now use 2 X BTF92 PNP Microwave devices (differential pair limiters), at each input and extremely clean and usabe to at least 330Mhz.

Silkscreen Lawout

Note the correct numerical sequence of the Binary Jumpers, relative to the earlier board

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