la3pna

exp(-((x-4)^2+(y-4)^2)^2/1000) + exp(-((x+4)^2+(y+4)^2)^2/1000) + 0.1exp(-((x+4)^2+(y+4)^2)^2)+0.1exp(-((x-4)^2+(y-4)^2)^2)

la3pna

 1	          1.000000E+06
 2	          2.000000E+06
 3	          3.000000E+06
 4	          4.000001E+06
 5	          5.000001E+06
 6	          6.000001E+06
 7	          6.934126E+06
 8	          8.000001E+06
 9	          9.000001E+06
 10	         1.0000001E+07

la3pna

Parts for the arduino course / nice to have in a starter kit


Arduino Leonardo (1) 
Arduino UNO SMD (1)

Breadboard (1)http://www.ebay.com/itm/251335522739 or 
Wires M/M (100?) http://www.ebay.com/itm/271520365327
Wires M/F (100?)

la3pna

Serial.println(u8g.getMode());
u8g.setRGB(255,255,255);
u8g.drawStr( 66, 0, "white?");

u8g.setRGB(0,0,0);
u8g.drawStr( 100, 0, "Invert?");

la3pna

/*
VFO program for Si5351
Using I2C LCD from:
http://www.amazon.com/Huhushop-TM-Serial-Display-Arduino/dp/B00JM88A94/
Si5351 library from NT7S.
Uses the updated version of the library (master).
Updated with the format_freq routine from Tom AK2B

Display library is avaible from:
https://code.google.com/p/u8glib/

la3pna

//U8GLIB_SSD1306_128X64 u8g(13, 11, 10, 9);     // SW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_SSD1306_128X64 u8g(4, 5, 6, 7);        // SW SPI Com: SCK = 4, MOSI = 5, CS = 6, A0 = 7 (new white HalTec OLED)
//U8GLIB_SSD1306_128X64 u8g(10, 9);             // HW SPI Com: CS = 10, A0 = 9 (Hardware Pins are  SCK = 13 and MOSI = 11)
//U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_NONE|U8G_I2C_OPT_DEV_0);        // I2C / TWI
//U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_DEV_0|U8G_I2C_OPT_NO_ACK|U8G_I2C_OPT_FAST);     // Fast I2C / TWI
//U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_NO_ACK);        // Display which does not send AC
//U8GLIB_SSD1306_ADAFRUIT_128X64 u8g(13, 11, 10, 9);    // SW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_SSD1306_ADAFRUIT_128X64 u8g(10, 9);            // HW SPI Com: CS = 10, A0 = 9 (Hardware Pins are  SCK = 13 and MOSI = 11)
//U8GLIB_SSD1306_128X32 u8g(13, 11, 10, 9);     // SW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_SSD1306_128X32 u8g(10, 9);             // HW SPI Co

la3pna

[00:06] <LA3PNA2> NT7S, when you find a break, would you mind sketchin out how you determined the PLL parameters for the Si? I kinda would like to use that if I do a beacon
[00:09] <NT7S> my algorithm?
[00:12] <LA3PNA2> more like, if we could figure out a program that determines the PLL freq and such when you input your wanted frequency
[00:13] <NT7S> ah
[00:14] <LA3PNA2> basicaly I'd like to be able to use that in the beacon
[00:14] <LA3PNA2> but, you should get on the JT9 first
[00:14] <NT7S> the general strategy is find a PLL frequency that is the highest integer divisor for the output frequency
[00:15] <NT7S> then tweak the PLL frequency the PPB to correct for the ref osc error
[00:15] <NT7S> so the divider for the PLL synth will not be an integer divider, but in many cases the multisynth will be
[00:16] <LA3PNA2> ah, so you aim for the multisynt to be a integer

la3pna

Technical bookshelf content
From top, left to rigth.

shelf A:
MIT RAD-LAB 23 Microwave receivers
MIT RAD-LAB 21 Electronic instruments
MIT RAD-LAB 16 Microwave mixers
MIT RAD-LAB 10 Waveguide handbook
Tekniske Regnetabeller 1949 (Smeby)
Tekniske Regnetabeller 1961 (Smeby og kobberstad)

la3pna

%-- 02.11.2017 00.02 --%
f = -300:1:300
c = (f-32)/1.8
c_t = f/2
c_r = (f/10)*3
err_t = c_t-c
err_r = c_r-c
err_c = c-c
plot(c,err_t)
hold on

la3pna

/*
VFO program for Si5351
Using I2C LCD from:
http://www.amazon.com/Huhushop-TM-Serial-Display-Arduino/dp/B00JM88A94/
Si5351 library from NT7S.
Uses the updated version of the library (master).
Updated with the format_freq routine from Tom AK2B

This code is licenced with GNU GPL v2. Please read: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html