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February 8, 2024. Another Transceiver from N6QW

While the rig is another CW Transceiver there are circuits that would be useful in a SSB transceiver like the HYCAS circuitry from W7ZOI. Don't pass just because it is CW.

Yet, I still see that the most popular post so far this year is the 30M CW Transceiver. What I consider the "really good stuff" has only about 1/2 the views of the 30M CW Transceiver piece.

Luckily in 2010, I did another CW Transceiver project for QRP Quarterly and I will now drag that forward. See this link

https://www.jessystems.com/40M.html

Noteworthy was that this radio almost caused me to stop writing for QRP Quarterly because of what I was asked to do. This rig was being pitched to the "newbie" and the Editor wanted to make it easy for them to build. Thus he asked  me to create a parts list with part numbers so it could be entered into the Mouser and DigiKey Bill Of Material function. I created that list with all of the Part Numbers and he comes back and says you used too many suppliers so get it down to 3. I reluctantly did that. So there was a parts list.

But the story didn't end there. I got an email from a Box Top Extra (BTE) who said he needed some 10K resistors rated at 1/4 watt and where could he get those. I told him to find a local Radio Shack and get one of the sales guys take him to the resistor rack and help him find the 10K 1/4 watt resistor pack. He sends me an email back saying Hey Pete you didn't give me the Radio Shack Part Number.
 
I never answered him back and that is why to this day I don't supply parts lists and complete schematics. I spent more time getting a parts list together than I did on the whole project. 
 
If you go to the link you can actually download the parts list by circuit block and by vendor. You will see it was a large expenditure of time. I buy parts in bulk and so don't track a lot of part numbers. I actually had to look up every part number and insert it into the spread sheet.
 
As you look through the schematics this was a complex build and lots of parts. This was certainly more than a 10 Minute Transmitter or Glue Stick PTO Direct Conversion Receiver. There was a lot of analysis to come up with a really great receiver and a transmitter that sounded good on the air.
 
I made one contact to prove it worked and then sent the radio to the Editor who air tested it -- he was a CW guy and he said it worked really well. He then passed it on to a new ham who I think stripped it for the parts. (DBM's, Crystal Filter and the Cores).

When I now look at all of the schematics and development work required I was impressed with my project. There was a lot to pack into that small box. Yet it got only a yawn from the QQ readers. 
 
At this time I was like doing concierge projects for one of the QQ Editor's. He asked me to do articles on projects that interested him and not so much with projects that may interest the readers. Todd, K7TFC (mostlydiyrf.com) ran a survey last year and the responses provided him data on where to point his development work. There was indeed high interest in CW projects. So maybe we're back at the peak of another CW transceiver cycle.
 
BE SURE TO SCROLL DOWN PAST THIS TEXT!
 
73's
Pete N6QW
 
 

 

























N6QW's 40 Meter QRP CW Transceiver Bill Of Materials                           
                           
Part Identification        Quantity            Source             Part Number   
        All Electronics                   
RG-174U Coax Cable (10 Ft.)        1        All Electronics                                 RG-174   
TO-92 Transistor Socket        1        All Electronics                                  STR-92   
TO-92 Transistor Socket        1        All Electronics                                 STR-92   
TO-92 Transistor Socket        5        All Electronics                                 STR-92   
TO-92 Transistor Socket        1        All Electronics                                 STR-92   
TO-92 Transistor Socket        2        All Electronics                                 STR-92   
TO-92 Transistor Socket        2        All Electronics                                 STR-92   
TO-92 Transistor Socket        2        All Electronics                                 STR-92   
                           
        Amidon                   
Ferrite Core        2        Amidon                                FT-37-43   
Ferrite Core        1        Amidon                                FT-23-43   
Ferrite Core        1        Amidon                                FT-37-43   
Ferrite Core        1        Amidon                                FT-37-43   
Ferrite Core        1        Amidon                                FT-37-43   
Ferrite Core        1        Amidon                                FT-37-43   
Ferrite Core        1        Amidon                                FT-37-43   
Ferrite Cores        2        Amidon                               FT-37-43   
Iron Powder Core        3        Amidon                       T-50-6 (Yellow)   
Iron Powder Core        1        Amidon                                   T-50-2   
Iron Powder Cores        3        Amidon                                   T-37-2   
Wire #26  Enamel        1        Amidon        Call:  Get two colors    
Ferrite Cores        2        Amidon                                 FT-37-43   
                           
        Kanga US                   
7.030 Crystal         1        Kanga US                  7.030 MHz Crystal   
                           
        Mini-Circuits                   
Double Balanced Mixer        1        Mini-Ciruits Labs                                   SBL-1    
                           
        Mouser Electronics                   
0-65 PF Trimmer        5        Mouser                       659-GYC65000   
1 PF Capacitor NPO (COG)        1        Mouser                   80-C317C109D2G   
2.2PF Capacitor NPO (COG)        2        Mouser                  80-C315C229D2G   
10 PF Capacitor NPO (GOG)        3        Mouser                          21RD710-RC   
33PF Capacitor NPO (COG)        2        Mouser                    80-C315C330J2G   
47 PF  Capacitor NPO(COG)        4        Mouser            140-50N5-470J-TB-RC   
68PF Capacitor NPO (COG)        4        Mouser               810-FK180G1H680J   
100 PF Capacitor NPO (COG)        6        Mouser                  80-C315C101K5G   
220PF Capacitor NPO (COG)        3        Mouser             810-FK18COG2A221J   
330PF Capacitor NPO (COG) 50V         11        Mouser             80-C322C331J5G5CA   
560 PF Capacitor NPO (COG)        1        Mouser                   80_C317F561J1G   
10 NF Capacitor 50V        13        Mouser         594-K103M15X7RF53H6   
20 NF Capacitor 50V        1        Mouser             80-C320C222K5R5CA   
100 NF Capacitor 50V        30        Mouser                  80-C317C104M5U   
2.2 Mfd 25V Electrolytic        1        Mouser               647-UPV1H2R2MFD   
4.7 Ufd 25Volt Electrolytic Cap.*        1        Mouser              667-ECE-A1EKA4R7   
10 MFd 25V Elecyrolytic        1        Mouser         647-USL1E100KDDANA   
47 Mfd Electroltytic 25V        1        Mouser          647-UVR1E470MDD1TD   
100 Mfd Electrolytic 25V        1        Mouser          647-UVZ1E101MED1TA   
220 Mfd. Electrolytic 25V        2        Mouser                647-UVZ1E221MPD   
10K Audio Gain Control        1        Mouser                            31-CC401-F   
10K Ohm Linear Potentiometer        1        Mouser                           31-CN401-F   
100 Ohm Trimmer         1        Mouser                652-2262S-1-101LF   
1 K Ohm Trimmer        2        Mouser                652-3362M-1-102LF   
5k Ohm Trimmer        1        Mouser                     652-3319P-1502   
4.7 Ohm 1/4 Watt Resistor        1        Mouser          660-MF1/4LCT52R4R7J   
5.1 Ohm 1/4 Watt Resistor        3        Mouser          660-CFS1/4CT5R25R1J   
10 Ohm 1/4 Watt Resistor        3        Mouser        660-CFS1/4CT5R2R100J   
22 Ohm 1/4 Watt Resistor        3        Mouser        660-MF1/4DCT52R22R0F   
39 Ohm 1/4 Watt Resistor        1        Mouser           660-CFS1/4CT52R390J   
51 Ohm 1/4 Watt Resistor        9        Mouser           660-CFS1/4CT5R2510J   
100 Ohm 1/4 Watt Resistor        4        Mouser          660-CFS1/4CT5R2101J   
150 Ohm 1/4 Watt Resistor        2        Mouser           660-CFS1/4CT5R2151J   
180 Ohm 1/4 Watt Resistor        2        Mouser           660-CFS1/4CT5R2181J   
220 Ohm 1/4 Watt Resistor        6        Mouser           660-CFS1/4CT5R2221J   
330 Ohm 1/4 Watt Resistor        3        Mouser           660-MF1/4CT52R331J   
470 Ohm 1/4 Watt Resistor        2        Mouser          660-CFS1/4CT52R471G   
510 Ohm 1/4 Watt Resistor        1        Mouser        660-MF1/4DCT52R5100F   
680 Ohm 1/4 Watt Resistor        3        Mouser           660-CFS1/4CT52R681J   
1K Ohm 1/4 Watt Resistor        4        Mouser                  660-CFS1/4C102J   
1K Ohm 1/4 Watt Resistor        3        Mouser            71-CCF551K00FKE36   
1.5K Ohm 1/4 Watt Resistor        2        Mouser        660-MF1/4DCT52R2152F   
2.2K Ohm 1/4 Watt Resistor        1        Mouser           660-MF1/4LCT52R222J   
3.3K Ohm 1/4 Watt Resistor        5        Mouser           660-CFS1/4CT52R332J   
4.7K Ohm 1/4 Watt Resistor        3        Mouser           660-CFS1/4CT52R472J   
10K Ohm 1/4 Watt Resistor        3        Mouser          660-CMF1/41002FLFTR   
22K Ohm 1/4 Watt Resistor        1        Mouser           660-CFS1/4CT52R223J   
100K Ohm 1/4 Watt Resistor        2        Mouser           660-CFS1/4CT52R104J   
1M 1/4 Watt Resistor        1        Mouser           660-CFS1/4CT5R2105J   
1.5M Ohm 1/4 Watt Resistior        1        Mouser                   791-RC1/4-155JB   
10M 1/4 Watt Resistor        1        Mouser           660-CFS1/4CT5R2106J   
15 Uhy RF Choke        1        Mouser                    542-78F150J-RC   
10.7 MHz IF Transformers        4        Mouser                           42IF123-RC   
5.185 MHz Crystal 32PF Load        3        Mouser                      520-HC518-32X   
5.185 MHz Crystal Series Load        10        Mouser                     520-HCA518-SX   
12.228 MHz Crystals        4        Mouser                815-ABL-12.228-B2   
1N34 Diode        1        Mouser                            526-1N34A   
1N914 Diode        1        Mouser                             512-1N914   
1N4148 Diode        10        Mouser                          512-1N4148   
6.0 Volt Zener Diode        1        Mouser                           78-1N5233B   
MV2109 Tuning Diode        1        Mouser              863-MMBV2109LT1G   
2N2219A Transistor        3        Mouser                         511-2N2219A   
2N3819 Transistor        1        Mouser                           512-2N3819   
2N3904 Transistor        7        Mouser                           610-2N3904   
2N4401 Transistor        1        Mouser                           610-2N4401   
IRF510 MOSFET        1        Mouser             884-IRF510STRRPBF   
J310 FET        2        Mouser                                512-J310   
TIP42 PNP Power Transistor        1        Mouser                             512-TIP42   
78L05 Voltage Regulator        1        Mouser                 512-KA78L05AZTA   
78L08 Voltage Regulator (TO-92)        2        Mouser               863-MC78L08ABPG   
LM317Z Voltage Regulator        1        Mouser                         511-LM317LZ   
LM7806 Voltage Regulator        1        Mouser                512-KA78L06AZTA   
NE555 Timer IC        1        Mouser                      595-NE555PE4   
Phillips SA612 IC        2        Mouser                   771-SA612AN/01   
Heat Sink         3        Mouser                      532-578305B00   
TO-220 Heat Sink        1        Mouser                      532-507302B00   
Mica Insulator (TO-220)        1        Mouser                               534-4663   
Transistor Socket        3        Mouser                              575-93103   
Socket 8 Pin DIP        4        Mouser                       571-1825373-2   
1/8 Inch Stereo Phone Jack        1        Mouser                    161-MJ355W-EX   
Panel Mount Power Connector        1        Mouser                              163-4020   
RCA Connectors        2        Mouser                         502-BPJF02X   
DPST Mini Slide Switch        1        Mouser                611-L201011SS03Q   
PCB Material 4X6"        2        Mouser                                590-506   
Relay 12VDC DPST        2        Mouser                 769-DSP2A-DC12V   
Single Sided Copper Vector Board        1        Mouser                        169P44WEC1   
                           
        Radio Shack                   
Audio IC (LM386)        1        Radio Shack                                276-1731   
Solder (2% Silver)        1        Radio Shack                                   64-035   
                           
        Miscellaneous                   
Hook Up Wire (#26 Various Colors)                           
Cable to DVM        1        Homebrew                  Use Banana Plugs   
Probe Tip        1        Homebrew             Use Broken Test Lead   
Alligator Clip lead        1        Surplus           
                           
* High Speed CW Ops may find the use of the 4.7 Ufd as too slow on change over so the                           
following can be substituted for a faster switch over on Receive. Simply replace the 4.7 Ufd                           
with one of the following values.                           
3.3 Ufd 25 Volt Electrolytic (Fast)        1        Mouser              667-ECE-A1EKK3R3   
2.2 Ufd 25 Volt Electrolytic (Faster)        1        Mouser              667-ECE-A1EKK2R2   
                           


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