MFJ Cub 40m QRP CW Transceiver Circuit Walk-through And Review, Plus Bandsweep, Ham Radio MFJ-9340




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w2aew: Can you get it to work on 10 meters with some re winding and a different crystal?

WX9DX: Can you get it to work on 10 meters with some re winding and a different crystal?

Alan Wolke: Here's a new video for my ham radio "circle". I built a 40m CW QRP Transceiver kit from MFJ. I made this video to describe the schematic/circuit of the unit, and run through a "sweep" of the 65kHz of tuning range, listening to the CW activity on the lower portion of the 40m band.

Sam Adams: These Radios Even Though Handmade Are Built In Starkville MS ... I know because I lived and have visited this Company personally, I have met the owner he is very nice and one manager there went to my church ... I tried to get a job there but I did not have a degree in circuit's but was allowed to get some of their parts and rejected units and stuff they discarded ... so that kept me busy with parts to mess with. They do build these radios by hand in a workshop I had a tour when applied for job, the radios have a handmade look and feel not an assembly or massed produced. Every effort goes into their units, If anything goes wrong or missing they will resolve it no questions. I was very luck to have had the ability to live near them and get some discards, might one day return to Starkville, MS These Guys Are Awesome. Love Radio Gear and Electronics in General. They also have build it yourself kits so you can build them yourself. That way you know it was built by you and that you build it the way you want and Learn to Build Electronics too !

ChrisWilson5006: Another excellent walk through and explanation. Would have been good to see the alignment. Too late? Thanks Alan!

statisticool: wow great vid/detail !

w2aew: There may be some around. Years ago, there was a series called Warbler, but I don't know if they're still available.

w2aew: Not a external amp, but I had the AF gain most of the way up.

kd1s: Wow - nice little kit and thank you for the walk through of the circuitry!

CP 1993: ok. thank you. is there one you would suggest for that type of thing that is still at a low price. under like $300?

Gerry Jurrens: Thanks, Alan! Very cool explanation. I even was able to follow along & I'm a no-tech Code, you know! Seems like it has a lot of audio output, too, or was that an external audio amp? 73

Todd Harrison: Thanks! I will be watching this a few times just as a learning tool on how the glue works in radios. Great Stuff!

Ronald Lijs: Very well explained once more, Alan!! Thanks for this...

w2aew: thanks Joe!

w2aew: You'd be able to receive PSK, but not transmit. There is no tx audio input (without modifications) for you to be able to do the phase shift keying modulation.

May D: Would be nice if you could also do a walk-throught with the Heathkit HW9

w2aew: I'll add that to the list, Don. I don't currently have a clean schematic for the HW-9, but I should be able to find one.

Brian Boccardi: Gerry has some many toys!

Dennis Hill: You did a great job explaining the circuit. Thanks

Radio wild: Impressive little unit! Really seemed to do well with just a foot and a half of antenna. Nice job as always! RW

w2aew: If I have time to repeat the alignment before I have to give the unit to the owner, I'll make a video. No promises!...

N7EWC: Outstanding walkthrough...Great job just made my favorites...Keep producing great videos...Agree you should have atleast one like from every Ham out there...

Ed Oxer: Getting set to build one and found your great video. Thanks for the informative talk.

CT1JRZ: Very nice video. 73

kais avionics: come on guys.... only 60 likes for this outstanding video!!!!!!!!!!

ceMental: Great job as usual.

P T: Excellent video. This was very instructional for me. Thank you

w2aew: Thank you! It's just a lot of reading, studying, building, and experimenting. You learn a LOT more from mistakes than successes.

CP 1993: this might seem like a silly question but I am vary new to this. my question is if I could use this with a laptop to do psk with?

wussup331: how do I get to the level you're at? Amazing stuff!

w2aew: Hey Don D - I'm uploading a walk-through of the Heathkit HW9 now!

N4PJA: Fine Business. I haven't found my videos which walk through all the stages of these radios. Good for me cause there's not many folks around here who are this knowledgeable or open!

w2aew: Thanks Don. Already done. Found a manual with a schematic that was split up over three or four pages. I've printed it out and taped it together. I'll do a video walk through of the schematic sometime soon.

May D: Google on-line HW9 manual and check MW post Thanks

CP 1993: sry I mint to flidgi
Rating:
MFJ Cub 40m QRP CW Transceiver circuit walk-through and review, plus bandsweep, ham radio MFJ-9340 5 out of 5

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MFJ Cub 40m QRP CW Transceiver circuit walk-through and review, plus bandsweep, ham radio MFJ-9340