FT-180A bubble wrap maniac Modification For 40 and AD 80 (# 2) | Home of YD1CHS bubble wrap maniac
Been a long time I did not write, now while there is time I will write again, but not directly complete yaa, later when the data there I fill in the following article and as soon as possible ... so loh!
This time the topic is the creation Frequency Counter (FC) for homebrew PLL 40 and AD 80 that I mounted on my FT-180A. FC I am writing an amateur adoption of E. Skelton (W6JFR) which makes Automatic Frequency Controller (AFC) using a PIC microcontroller. The program is very simple bubble wrap maniac and inspiring to me, so I did a major modification to the program I use in my PLL, the results are very satisfying. Excluding the circuit I am using the ADD / SUB Button, HI / LO Button, Button Locked and Integrator can be downloaded from the original bubble wrap maniac article please click here W6JFR http://homepage.eircom.net/% 7Eei9gq/stab.html
The main component is a microcontroller PIC 16F84A (Rp.30.000, -) which functioned as a counter and pengkalkulasi frequency of the RF signal, and displayed in accordance with our wishes to the LCD 16 2 (Rp.45.000, -). To get more accuracy, then added a pre-scaler 74LS393 (Rp.6.000, -). While to convert bubble wrap maniac the input signal into a pulse whose shape sinusiodal and serves as a gate that can be opened and closed then used a 74LS00 Quad NAND Gates (Rp.4.000, -), which is fed through a small signal RF amplifier using transistor 2SC1815 (Rp.500 , -). With other supporting components such as the total cost of making the FC is no more than Rp 100,000, -
Frequency Counter has some features (different from the original feature, because it has been modified by the author bubble wrap maniac YD1CHS) as follows: ration DC 9V battery box so it can be used and made mobile / portable. I use a voltage of 8V FT-180A. Measurement range covers all amateur HF bands 0-45 MHz (limit of measurement is limited Prescaler bubble wrap maniac IC 74LS393 and 74LS00 NAND Gates). Frequency measurements using 24 bits, and as much as 7-digit bubble wrap maniac display with format XX.XXX.XX MHz frequency display is the Actual Working Frequency, which is the difference between VCO and IF (10.7 MHz) and automatically calculates F = VCO - IF or F = IF - VCO according to the RF input signal. Condition VCO> bubble wrap maniac IF or VCO <IF appear to add information, in which the position of the current VCO. Display USB or LSB mode, designed in accordance with the FT-180A writer who only have 1 piece of USB filter in it, so that when the VCO USB> bubble wrap maniac IF and LSB when VCO <IF.
In general, the algorithms used in this FC are as follows: Initialization and reseting all Port I / O and LCD. Display the greeting "VIVA homebrewer". Start by opening bubble wrap maniac the Gate measurement for 100ms. Gate closes terminate the measurement. Retrieve bubble wrap maniac the highest digit frequency readout from RTCC by 8 bits, middle digit of an internal prescaler (1:256) by 8 bits and the lowest digit of the external 74LS393 prescaler by 8 bits, so the total frequency readout is 24 bits or 4-digit Hexadecimal Binary. To check whether the VCO> IF or VCO <IF, LCD show all these conditions, complete with USB or LSB mode. When VCO> IF then do the calculation F = VCO - IF and vice versa when the VCO <IF doing the calculation F = IF - VCO and display the results on the LCD. So, go back to step 3.
In doing programming and kompiling I use MPLAB software free of http://www.microchip.com, while to write to me using the IC programmer El-cheapo homemade through the parallel port, but lately I'm using a USB programmer with a model K-128 I bought cheaply on the Internet, because it is more practical without additional power and can write directly from my laptop.
Performance of FC is quite satisfactory for me, is quite sensitive to the RF input signal, and frequency bubble wrap maniac agile in handling bubble wrap maniac change. bubble wrap maniac You can see video footage of the FT-180A and PLL me on YouTube via the link http://www.youtube.com/watch?v=6RQwFHCD838 bubble wrap maniac
For ASM files and HEX I include below, remove the DOC extension on the file name, because this blog only allows attachments bubble wrap maniac with extensions *. DOC. If you already have a PIC programmer and do not want to be bothered doing programming, using the file ft sian-180A-fc-01.hex, while if you want to modify please edit the file ft-180A-fc-01.asm, of course, you need the software such as the MPLAB debugger and compiler.
An additional set of ... on pin 10, 11 and 12 (at IAC 16F84A) I did not use, because I do not use it as an AFC (Automatic Frequebcy Counter), in addition to the switch-switcn addition or deduction I replace the soft
Been a long time I did not write, now while there is time I will write again, but not directly complete yaa, later when the data there I fill in the following article and as soon as possible ... so loh!
This time the topic is the creation Frequency Counter (FC) for homebrew PLL 40 and AD 80 that I mounted on my FT-180A. FC I am writing an amateur adoption of E. Skelton (W6JFR) which makes Automatic Frequency Controller (AFC) using a PIC microcontroller. The program is very simple bubble wrap maniac and inspiring to me, so I did a major modification to the program I use in my PLL, the results are very satisfying. Excluding the circuit I am using the ADD / SUB Button, HI / LO Button, Button Locked and Integrator can be downloaded from the original bubble wrap maniac article please click here W6JFR http://homepage.eircom.net/% 7Eei9gq/stab.html
The main component is a microcontroller PIC 16F84A (Rp.30.000, -) which functioned as a counter and pengkalkulasi frequency of the RF signal, and displayed in accordance with our wishes to the LCD 16 2 (Rp.45.000, -). To get more accuracy, then added a pre-scaler 74LS393 (Rp.6.000, -). While to convert bubble wrap maniac the input signal into a pulse whose shape sinusiodal and serves as a gate that can be opened and closed then used a 74LS00 Quad NAND Gates (Rp.4.000, -), which is fed through a small signal RF amplifier using transistor 2SC1815 (Rp.500 , -). With other supporting components such as the total cost of making the FC is no more than Rp 100,000, -
Frequency Counter has some features (different from the original feature, because it has been modified by the author bubble wrap maniac YD1CHS) as follows: ration DC 9V battery box so it can be used and made mobile / portable. I use a voltage of 8V FT-180A. Measurement range covers all amateur HF bands 0-45 MHz (limit of measurement is limited Prescaler bubble wrap maniac IC 74LS393 and 74LS00 NAND Gates). Frequency measurements using 24 bits, and as much as 7-digit bubble wrap maniac display with format XX.XXX.XX MHz frequency display is the Actual Working Frequency, which is the difference between VCO and IF (10.7 MHz) and automatically calculates F = VCO - IF or F = IF - VCO according to the RF input signal. Condition VCO> bubble wrap maniac IF or VCO <IF appear to add information, in which the position of the current VCO. Display USB or LSB mode, designed in accordance with the FT-180A writer who only have 1 piece of USB filter in it, so that when the VCO USB> bubble wrap maniac IF and LSB when VCO <IF.
In general, the algorithms used in this FC are as follows: Initialization and reseting all Port I / O and LCD. Display the greeting "VIVA homebrewer". Start by opening bubble wrap maniac the Gate measurement for 100ms. Gate closes terminate the measurement. Retrieve bubble wrap maniac the highest digit frequency readout from RTCC by 8 bits, middle digit of an internal prescaler (1:256) by 8 bits and the lowest digit of the external 74LS393 prescaler by 8 bits, so the total frequency readout is 24 bits or 4-digit Hexadecimal Binary. To check whether the VCO> IF or VCO <IF, LCD show all these conditions, complete with USB or LSB mode. When VCO> IF then do the calculation F = VCO - IF and vice versa when the VCO <IF doing the calculation F = IF - VCO and display the results on the LCD. So, go back to step 3.
In doing programming and kompiling I use MPLAB software free of http://www.microchip.com, while to write to me using the IC programmer El-cheapo homemade through the parallel port, but lately I'm using a USB programmer with a model K-128 I bought cheaply on the Internet, because it is more practical without additional power and can write directly from my laptop.
Performance of FC is quite satisfactory for me, is quite sensitive to the RF input signal, and frequency bubble wrap maniac agile in handling bubble wrap maniac change. bubble wrap maniac You can see video footage of the FT-180A and PLL me on YouTube via the link http://www.youtube.com/watch?v=6RQwFHCD838 bubble wrap maniac
For ASM files and HEX I include below, remove the DOC extension on the file name, because this blog only allows attachments bubble wrap maniac with extensions *. DOC. If you already have a PIC programmer and do not want to be bothered doing programming, using the file ft sian-180A-fc-01.hex, while if you want to modify please edit the file ft-180A-fc-01.asm, of course, you need the software such as the MPLAB debugger and compiler.
An additional set of ... on pin 10, 11 and 12 (at IAC 16F84A) I did not use, because I do not use it as an AFC (Automatic Frequebcy Counter), in addition to the switch-switcn addition or deduction I replace the soft
No comments:
Post a Comment