Crystalator schematic

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Important mainly because of the people in the conversation. Click to teach Gmail this conversation is not important.	millerke6f, Crystalator schematic, has attachments, 12:54 pm, Crystalator schematic here is the suggested schematic design for the Crystal Replacement gadget for. millerke6f	Crystalator schematic - Crystalator schematic here is the suggested schematic design for the Crystal Replacement gadget for	12:54 pm
Important mainly because of the people in the conversation. Click to teach Gmail this conversation is not important.	David Kitts, Freq Std, 12/30/14, Wonder where he got this idea: http://gerrysweeney.com/build-a-10mhz-rubidium-frequency-standard-and-. David Kitts	Freq Std - Wonder where he got this idea: http://gerrysweeney.com/build-a-10mhz-rubidium-frequency-standard-and-	12/30/14
Important mainly because of the people in the conversation. Click to teach Gmail this conversation is not important.	David Kitts, Interesting, 12/28/14, Figure someone is going screw things up: https://www.youtube.com/watch?v=P2q0z8jVH5w " The older. David Kitts	Interesting - Figure someone is going screw things up: https://www.youtube.com/watch?v=P2q0z8jVH5w " The older	12/28/14
Important mainly because of the people in the conversation. Click to teach Gmail this conversation is not important.	Dirk Bruehl, Fwd: December Newsletter: Rise to the Gecko challenge!, 12/17/14, FYI, in case you don't get their newsletter! Cheers, Dirk. Original Message . Dirk Bruehl	Fwd: December Newsletter: Rise to the Gecko challenge! - FYI, in case you don't get their newsletter! Cheers, Dirk. Original Message	12/17/14
Important mainly because of the people in the conversation. Click to teach Gmail this conversation is not important.	me, deki5301 (3), HAT Expansion Boards for PI, 12/16/14, Not talking yet -- haven't got back to it. I did connect up the regulator to +5 Volts. I looked. me, deki5301 (3)	HAT Expansion Boards for PI - Not talking yet -- haven't got back to it. I did connect up the regulator to +5 Volts. I looked	12/16/14
Important mainly because of the people in the conversation. Click to teach Gmail this conversation is not important.	David Kitts, cntrl J, 12/13/14, Bob I found this, maybe this is what you need. You need carriage return and linefeed; CTRL J get you. David Kitts	cntrl J - Bob I found this, maybe this is what you need. You need carriage return and linefeed; CTRL J get you	12/13/14
Important mainly because of the people in the conversation. Click to teach Gmail this conversation is not important.	David Kitts, It works, 12/13/14, This is what I used: https://www.youtube.com/watch?v=9QZkCQSHnko Set it up as an AP and got an IP. David Kitts	It works - This is what I used: https://www.youtube.com/watch?v=9QZkCQSHnko Set it up as an AP and got an IP	12/13/14
Important mainly because of the people in the conversation. Click to teach Gmail this conversation is not important.	unread, deki5301@surewest.net, ESP8266 Community Forum • View topic - ESP8266 WiFi Module Pinouts, 12/12/14, http://www.esp8266.com/viewtopic.php?f=5&t=28 Thanks, David, Sent from my Verizon 4G LTE Tablet. deki5301@surewest.net	ESP8266 Community Forum • View topic - ESP8266 WiFi Module Pinouts - http://www.esp8266.com/viewtopic.php?f=5&t=28 Thanks, David, Sent from my Verizon 4G LTE Tablet	12/12/14
Important mainly because of the people in the conversation. Click to teach Gmail this conversation is not important.	millerke6f, Fwd: HOLD ON TO YOUR SEATS FOR THE RIDE OF YOUR LIFE !!, 12/11/14, These Russian dash cams come along from time to time. Amazing how many people actually survive and. millerke6f	Fwd: HOLD ON TO YOUR SEATS FOR THE RIDE OF YOUR LIFE !! - These Russian dash cams come along from time to time. Amazing how many people actually survive and	12/11/14
Important mainly because of the people in the conversation. Click to teach Gmail this conversation is not important.	David, me (4), Update: Watching this chip, has attachments, 12/9/14, Btw. Are you going to be aroubd this weekend? Was going to drop off laptop and maybe find a beer. David, me (4)	KITTS Update: Watching this chip - Btw. Are you going to be aroubd this weekend? Was going to drop off laptop and maybe find a beer	12/9/14
Important mainly because of the people in the conversation. Click to teach Gmail this conversation is not important.	Dirk, me (2), Fwd: ESP 8266 Wifi device with a Forth System, 12/8/14, On Mon, Dec 8, 2014 at 4:57 PM, Dirk Bruehl <dirk.bruehl@usa.net> wrote: Bob, Is this the same. Dirk, me (2)	Fwd: ESP 8266 Wifi device with a Forth System - On Mon, Dec 8, 2014 at 4:57 PM, Dirk Bruehl <dirk.bruehl@usa.net> wrote: Bob, Is this the same	12/8/14
Important mainly because of the people in the conversation. Click to teach Gmail this conversation is not important.	millerke6f, me (4), re: stuff, has attachments, 12/4/14, Not sure about the 1 ms pulse. I have my ISR set to that to make sure I catch all of the changes. So,. millerke6f, me (4)	MILLER bobz/seds re: stuff - Not sure about the 1 ms pulse. I have my ISR set to that to make sure I catch all of the changes. So,	12/4/14
Important mainly because of the people in the conversation. Click to teach Gmail this conversation is not important.	David Kitts, FW: Way more than just an air show!!!, 11/3/14, Hold on to your desk chair, best viewed full screen with a HD monitor. This one is way more than just. David Kitts	FW: Way more than just an air show!!! - Hold on to your desk chair, best viewed full screen with a HD monitor. This one is way more than just	11/3/14
Important mainly because of the people in the conversation. Click to teach Gmail this conversation is not important.	NUTS & VOLTS, EARLY RENEWAL BONUS!!, 10/1/14, EARLY RENEWAL BONUS!! Dear Robert, We hope you've been enjoying your subscription to NUTS &. NUTS & VOLTS	EARLY RENEWAL BONUS!! - EARLY RENEWAL BONUS!! Dear Robert, We hope you've been enjoying your subscription to NUTS &	10/1/14
Important mainly because of the people in the conversation. Click to teach Gmail this conversation is not important.	Curtis .. Perry (6), Re: [svfig] Idea for Forth Day, 9/21/14, I remember some advice in jest to the effect that explorers/wanderers would do well to take a bottle. Curtis .. Perry (6)	Re: [svfig] Idea for Forth Day - I remember some advice in jest to the effect that explorers/wanderers would do well to take a bottle	9/21/14
Important mainly because of the people in the conversation. Click to teach Gmail this conversation is not important.	Kevin Appert, Words, 9/21/14, This email is trivial and about nothing in particular so if you have something better to do, better. Kevin Appert	Words - This email is trivial and about nothing in particular so if you have something better to do, better	9/21/14
Important mainly because of the people in the conversation. Click to teach Gmail this conversation is not important.	David Kitts, Interesting Web Site, 9/20/14, I stumbled on this website: http://radio-locator.com/ Just about anything you want to listen around. David Kitts	Interesting Web Site - I stumbled on this website: http://radio-locator.com/ Just about anything you want to listen around	9/20/14
Important mainly because it was sent directly to you. Click to teach Gmail this conversation is not important.	Jason, me (3), Do you sell your stuff on Tindie?, 9/18/14, 415-305-1439 Tell me when you want to call, and we can schedual a time. I'm pretty flexable but a. Jason, me (3)	Do you sell your stuff on Tindie? - 415-305-1439 Tell me when you want to call, and we can schedual a time. I'm pretty flexable but a	9/18/14
Important mainly because of the people in the conversation. Click to teach Gmail this conversation is not important.	Kevin, Samuel (4), [svfig] Call for Participation --- September SVFIG, 9/10/14, On Tue, Sep 9, 2014 at 8:10 PM, Kevin Appert <forther@comcast.net> wrote: > That will be. Kevin, Samuel (4)	[svfig] Call for Participation --- September SVFIG - On Tue, Sep 9, 2014 at 8:10 PM, Kevin Appert <forther@comcast.net> wrote: > That will be	9/10/14
Important mainly because of the people in the conversation. Click to teach Gmail this conversation is not important.	kibler, Re: repeater control - adding bob nash, has attachments, 9/4/14, Bob and Mike: Adding Bob Nash to the thread - he is a ham and part of BOBZ, with the other half of. kibler	Re: repeater control - adding bob nash - Bob and Mike: Adding Bob Nash to the thread - he is a ham and part of BOBZ, with the other half of	9/4/14
Important mainly because of the people in the conversation. Click to teach Gmail this conversation is not important.	Kevin, daruffer, Samuel (3), [svfig] Meeting Links, 8/23/14, And here's a link for the Pratt parsers I was talking about earlier. https://en.wikipedia.org/. Kevin, daruffer, Samuel (3)	[svfig] Meeting Links - And here's a link for the Pratt parsers I was talking about earlier. https://en.wikipedia.org/	8/23/14
Important mainly because of the people in the conversation. Click to teach Gmail this conversation is not important.	David L. Jaffe, Re: [svfig] New member, 7/28/14, sorry you didn't make it - here are the videos morning http://youtu.be/wBY9JHbkZT4 afternoon http. David L. Jaffe	Re: [svfig] New member - sorry you didn't make it - here are the videos morning http://youtu.be/wBY9JHbkZT4 afternoon http	7/28/14
Important mainly because of the people in the conversation. Click to teach Gmail this conversation is not important.	Kevin Appert, [svfig] Meeting Links, 7/26/14, List of backup software (from John's talk) http://en.wikipedia.org/wiki/List_of_backup_software. Kevin Appert	[svfig] Meeting Links - List of backup software (from John's talk) http://en.wikipedia.org/wiki/List_of_backup_software	7/26/14
Important mainly because it was sent directly to you. Click to teach Gmail this conversation is not important.	Instructables (2), Conductive Paint, Jell-O Marshmallow Fondant, Autonomous Vehicle, 7/24/14, From the Editors Woodworking Projects for Beginners Here's 50 great beginner woodworking projects. Instructables (2)	Conductive Paint, Jell-O Marshmallow Fondant, Autonomous Vehicle - From the Editors Woodworking Projects for Beginners Here's 50 great beginner woodworking projects	7/24/14
Important mainly because of the people in the conversation. Click to teach Gmail this conversation is not important.	David, me (2), RPi and IPhone, has attachments, 7/11/14, Thanks. In looking for Python code examples, I have been running across many projects using bluetooth. David, me (2)	RPi and IPhone - Thanks. In looking for Python code examples, I have been running across many projects using bluetooth	7/11/14

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Click to teach Gmail this conversation is important.	Kevin, Samuel (3), [svfig] January Meeting - Call for Participation, Jan 5, Thanks! On 1/5/2015 11:08 AM, Samuel Falvo II wrote: > Unless anything changes, I can give a quick. Kevin, Samuel (3)	[svfig] January Meeting - Call for Participation - Thanks! On 1/5/2015 11:08 AM, Samuel Falvo II wrote: > Unless anything changes, I can give a quick	Jan 5
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Click to teach Gmail this conversation is important.	unread, Kevin Appert, [svfig] No Attachments on SVFIG List // was Re: <NSF>porn for the mechanical engineer, 12/28/14, As it turns out, there are no attachments permitted on SVFIG list emails. If there's a small. Kevin Appert	[svfig] No Attachments on SVFIG List // was Re: <NSF>porn for the mechanical engineer - As it turns out, there are no attachments permitted on SVFIG list emails. If there's a small	12/28/14
Click to teach Gmail this conversation is important.	unread, Instructables, Top Instructables of 2014, 12/28/14, From the Editors Glow Table The year is coming to an end and what a year it's been. Authors are. Instructables	Top Instructables of 2014 - From the Editors Glow Table The year is coming to an end and what a year it's been. Authors are	12/28/14
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Click to teach Gmail this conversation is important.	unread, Nuts & Volts/Servo Magaz., Best Savings Of The Year!!, 12/23/14, Having trouble viewing this email? Click here The 2014 CD-ROMs of both Nuts & Volts and SERVO. Nuts & Volts/Servo Magaz.	Best Savings Of The Year!! - Having trouble viewing this email? Click here The 2014 CD-ROMs of both Nuts & Volts and SERVO	12/23/14
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Click to teach Gmail this conversation is important.	Kevin Appert, [svfig] <NSF>Sputnick // was Today in Engineering History: World's First Communication ..., 12/19/14, SPUTNIK 1 Sputnik 1 was the Soviet Union's and the world's first orbiting satellite. The. Kevin Appert	[svfig] <NSF>Sputnick // was Today in Engineering History: World's First Communication ... - SPUTNIK 1 Sputnik 1 was the Soviet Union's and the world's first orbiting satellite. The	12/19/14
Click to teach Gmail this conversation is important.	David .. Alexander (4), [svfig] [nsf] Today in Engineering History: World's First Communication Satellite, 12/18/14, I thought about that. At least Sputnik didn't have a tape recorder onboard. If I'm not. David .. Alexander (4)	[svfig] [nsf] Today in Engineering History: World's First Communication Satellite - I thought about that. At least Sputnik didn't have a tape recorder onboard. If I'm not	12/18/14
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Click to teach Gmail this conversation is important.	Mike J., Check this out. A free circuit design, test and PC board layout tool., 12/8/14, Check this out.. Now you can get free what in the early 80's we paid a lot of money for. A free. Mike J.	Check this out. A free circuit design, test and PC board layout tool. - Check this out.. Now you can get free what in the early 80's we paid a lot of money for. A free	12/8/14
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millerke6f@aol.com

12:54 PM (3 hours ago)

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Crystalator schematic

here is the suggested schematic design for the Crystal Replacement gadget for Collins S line or Drake Equipment that use a crystal controlled converter as it's first heterodyne converter. The collins scheme uses 133 different crystal frequencies to cover 3.4 to 30 MHz in 200 KHz increments distributed across 5 bands. The Drake scheme 48 crystals to cover 1.5 MHz to cover 1.5 to 30 MHz in 47 600 KHz increments across 5 bands.

I have all the data table for these frequencies which due to the tidy spacing could be calculated rather than table driven to save space. The primary strings to send to the screen would be the Band Number 1...5 and the band start-stop frequencies such as

Collins Band 1 3.4--3.6 MHz or

Collins Band 5 29.8--30.0 MHz

in the case of a unit targeted at Drake

Drake Band 1 1.5--2.1 MHz

etc.

The circuit uses on N502 PLL to derive a 125 MHz DDS clock from a regular 25 MHz crystal that will allow for trimming to a precise clock unlike the canned oscillators that can't be trimmed. The Second N502 is the PLL used to clean up the DDS spectrum and would be set to X2 so the DDS would run at 1/2 of the desired injection frequency. The injection frequencies need not be published on the display as they would have no relevance to the task at hand other than to be used as a trouble shooting mechanism in the early development to be removed later.

Since both the Drake and the Collins applications employ a tracking filter in the original crystal oscillator output circuit that would be driven by the Crystalator the fact that the output of the Crystalator is a square wave is not a problem. Empirical data suggests that the output of the X2 PLL will have plenty of drive headroom and that a small fixed resistive pad would be included on the clkout1 output term on the schematic.

My estimate is that the first 25 units will cost around 25 bux to build given that we have a good supply of AD9850 chips on hand. I'm in the process of designing the PCB so that yield is yet to be determined, but I'd say worst case would be 10-15 bux a board.

I'm guessing that we can sell them for around 75 each for a reasonable margin. Assembly will be almost all smt. I have a good supply of 25 MHz crystals and headers and caps and resistors. My only concern from an engineering point of view is whether it is a good practice to include pullup resistor between the 3.3 vdc cpu port pins and the lines to the DDS chip running at 5 VDC and the display also running at 5 vdc. The cost of bunch of 4.7K 805 smt resistor is zilch and the board space is not a problem either.. Please verify the numbering on the Bobbi connector and whether number 1 is left or right justified relative to the top side view of the PCB

Over and ooooot

Flavano et all

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Crystalator schematic

millerke6f@aol.com