Kit for 20m 5W SDR transceiver for CW-SSB-Digital

Transcription

1 Kit for 20m 5W SDR transceiver for CW-SSB-Digital Keep up with the times keep up - ICOM have already recognized this technology and created its first SDR transceiver IC-7300 but the price. Start study with cheap one.. To work on the this SDR transceiver is very convenient it does not require a powerful computer-all runs fine under Windows 10 or older versions especially useful with GSDR - received audio always goes to the SP socket via the POT VOLUME even if we use the virtual audio - the mouse and the restructuring of all stations at a glance. You need only in the tester, if properly assembled - all working immediately - just check the voltage of 5 and 9 V on the 7805 and 7809, and adjust R67 R48 to the maximum suppression Simple and good working SDR transceiver on 20m 5W any mode When the TX mode is easily 5W and more -TESTED. About the TX at the end of the description Works with sound cards for example USB and has a band 96 khz for a sound overview 96 khz and 192 to 192 khz audio Especially now a lot of good USB sound cards ESI, UGM96... Will work on other bands but not above 15 MHz you need to replace the quartz and recalculate the LPF and input RX of circuit This set to 20m - turning on the switch and commutating 2-3 quartz can cover the entire range 20m Set of 2 quartz on SSB and CW-Digital >> to Khz >> to Khz ( in some kits khz)

2 TO CALIBRATE AND SET THE FREQUENCY EASILY ENOUGH WITH AN ACCURACY OF 10 HZ USE WSPR OR RB NET NET COMPARING AND ADJUSTING THEIR VALUES, FOR EXAMPLE, MADE OF A SET OF TRANSCEIVER WITH QUARTZ KHZ MATTERED 14061,057 KHZ THIS VALUE AND ENTER IN THE PROGRAM. The KIT is very easy - all large DIP elements all on the same ONE PCB including PTT via a COM port The design was repeated many times and worked well When you build without errors begins to work immediately DO NOT TOUCH AND NOT ADJUST RX BPF L --- ALL READY AND TUNED!!!!! Author Sergey 4Z5KY To make the set a pleasure - all the elements of a large And now with the release of the program Igor UA3DJY JTDX (WILL GET AFTER PAID KIT) work with rare and distant DX - 4S7, H44, VK, ZL, YV, and so on JT65A with 1-5 Watts no problem The time of manufacture of this set, about 3 days at 2 hours a day - there is certainly in TV and the Internet are increasingly losing time, plus eagle vision don't need - just need to be able to solder and wish well to study the program and about SDR When developing materials YU1LM and other publications. Mixer for 74HC4051 use 74HC4051 in the transceiver allows you to make a very simple mixer for receiving and transmitting tract. The quality of this mixer is good. Detailed history of the development of the transceiver can be read on the forum CQHAM.ru (Krasnodar site). And if You intend to do this, or any other simple SDR transceiver,then I highly recommend you read the forum there are detailed all the way from the idea of a transceiver to complete and working designs and a lot of other useful information that's just not realistic to fit in this article. The transceiver built according to the scheme of direct conversion from the operating frequency to the audio frequency signal of a sound card of the computer It was decided to make a simple single-board single-band transceiver,with a quartz oscillator at the fundamental frequency and QRP power, ie fully finished machine. The band chose the 14 MHz as the most interesting for me. If you wish, is not difficult to make the transceiver at any other frequency range. At frequencies above 14 MHz transceiver untested, and lower frequencies should work well. The resulting transceiver has the following options : Putting the socket for the quartz is easy to change the range In a set of 2 quartz for SSB and for CW-WSPR- JT65-RTTY-PSK-SIM31-Opera

3 The sensitivity is about 1 uv( micro) and depends on the quality of the sound card.

4 Dynamic range more than 90 db intermodulation or rather there was nothing to measure. The suppressed carrier transmission is more than 40 db (I get db) and depends on the specific instance 74HC4051,as well as the quality settings. Image rejection greater than 60 db at a program correction. Output power of about 5 watts. It is clear that for SDR transceiver required control program,and my choice fell on the software M0KGK because of the possibility of programme correction of amplitude and phase over the operating range of the sound card and store the calibration points. This is very important.this property allows the program to very well to suppress mirror channel. Due to the lack of storage in the program Power SDR calibrations at several frequencies the sound card from its use refused - this program works great with SDR transceiver with integrated frequency synthesizer,where the frequency is synthesizer,not by the frequency of the sound card. Schematic diagram of simple and describe the principle of operation will not. It can be read at Tasa YU1LM Errors in the PCB is not detected. For ease of soldering the signed values of the elements on the printed circuit Board pattern,and not the sequence numbers of elements. The transceiver in tuning virtually no need,and with proper installation begins to work immediately. Of course with proper program settings M0KGK. Also work Rocky, PowerSDR IQ, SR40, isdr These data can also be read on CQHAM forum. You can use VFO or external synthesizer frequency,the signal from which you want to apply for 1st 74HC04 output through the coupling capacitor 10 nf. Capacitors C63 and C64 is not set. Wound minimum BPF ready L1 L2 1 µh of inductance or sometimes ready green L uh In PA part is a transformer on the ring 16-20mm НН 7 turns triple twisted wire in diameter mm In the LPF 6 turns of mm wire on the halves SB12а or 14T T37-6 torroid First, sort the capacitors and the resistor values using a tester TOP PCB have marked ALL details

5 101=100PF 104 = 0.1 uf=100n 103=10n and so on NOTE! C=230pF in kit may be 220 or 240 pf (not important) VD1 1N4005 OR 4007 Drain IRF510 connect via radiator but NOT TO GND! GND to S (source) You need only in the tester, if properly assembled all working immediately - just check the voltage of 5 and 9 V on the 7805 and 7809, and adjust R67 R48 to the maximum suppression (Image reject) To work on this transceiver very nice and comfortable. All control a computer mouse. See the whole range in the band of 96 khz,and a simple indication or "drag" the filter program is instantly rebuilt on the desired station. Very quickly and clearly. After working on this transceiver, operating on normal something is missing the visual information about the situation on the range. In addition, since the output of the transceiver of signal IQ You can in a wide band decode WSPR- CW(CWSkimmer)-JT65 (MAP65) Kit includes - PCB - quartz-2 PCs, resistors and capacitors-the relay-inductance and the torroid, connectors but no heatsink TOP PCB have marked ALL details and nominals SEE PHOTO BELOW The scheme of connection to the computer is exactly the same as AVALA-AVALA01 refer to the Internet for example. For PTT use COM port - USB-COM adapter TRX SDR to adjust the amplitude and phase of the R51-TX (amplitude) and R67-R48 (RX) to the maximum suppression of mirror (Image reject) channel, however, the main adjustment of suppression of the mirror channel in the software, the adjustment of the amplitude and phase. It is also important in the program to correctly select the sound card sample rate of its input and output will Work only sound card has stereo input TEST and what sound card

6 Real Example RX with this SDR JT65 on new JTDX software ( in folder)

7 SDR software under Linux study and work for example MAC OSX LINUX WINDOWS and so on (Recomended KGKSDR) VIDEO ( here KX3 but the same use IQ signal) >>>>>

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9 С69 no need touch, 270 pf OK

10 It only solder BPF L ready and tuned!!!

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16 IN TEN-TEC CASE SOFTWARE Install any Virtual audio cable VB cable or VAC and work with all Digital software FREE Virtual audio cable in folder with Software ( after order)

17 GSDR -Genesis SDR (see folder-software) choose the type G2030 set the center frequency quartz-write SC and virtual sound card - write PTT COM port very convenient as there is a control with the CAT as the Kenwood 2000 is within the range 20m WITH ROCKY VERY GOOD WORK IN PSK31 TX AND RX FLDIGI

18 KGKSDR-JT65-VAC

19 ROCKY-JT65-DX

20 For KGKSDR you need install ASIO4ALL ( see in folder Software)

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23 SOUNDCARD NOT IN THE KIT BUT ASUS XONAR U5 GOOD AND CHEAP PLUS HAVE 192 KHZ BW, W10 OK

24 TX MODE

25 You can set 5 or even more Watts ( TESTED) programs and variables POT near IRF510However, consider the size of the radiator (heathsink) and if it is small to do more than 2 Watts is not recommended POT near IRF510 adjust PTT no signal mA It is easiest to test the transmission program in the ROCKY there minimum settings and it works well with the transmission in PSK mode and CW it listening on the control receiver can adjust and suppress the mirror on the TX If problems c PTT via COM it can be a pedal or even some sort of way to serve GND to the collector КТ815 Also tried using virtual audio into WSPR-OPERA-JT65 program GSDR see screenshots. Good COM-USB >>

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