#80: MFJ Cub 40m QRP CW Transceiver Circuit Walk-thru And Review, Plus Bandsweep, Ham Radio MFJ-9340




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Did this video help you?

Joe Schlabotnick: i before e except after c.

andrew wood: Ive got 2 cubs for 20 and 40 meters band and i love them..
On 40 meters band receiver is not louder like in 20 meters one.
Which parts should be focus on ? 73' Andrew

Morse Code: Nice vid, thanks. Was thinking of checking this kit out,

Matt Rainey: Just curious, but how does this compare to the Ten-Tec 1340?
I'm looking to build a kit and I can't decide which one.

paulwhuzinasr: ive watch this several times and like it very much. i am buying a 9320 and was wondering if you wouldn't mind helping me to modify the radio a bit. i love ham radio and have been in it since 64. i enjoy building things and this radio wont be any different. but there are some thing i want to add to it. it is a perfect size if there is such a thing. tnx for your time. 73 kb1iai

Randy Upchurch (N4NOM): Great video.  Nice little rig.

berkmanyt: Nice job…. AGAIN….Thank you   walt  K2CXP

Michael Lloyd: This was awesome. I just built the exact MFJ transceiver and the walkthru was very helpful. The only complaint I have is that it's going to take me a long time to get through your site :) I haven't aligned mine yet. It seems pretty easy but it would have been nice to watch you go through it


NE5U

NG9D: Superb!

w2aew: It would involve more than just changing the toroid windings and changing the crystal.  You'd have to adjust the receive bandpass filter, the VFO used for the rx and tx LO, the transmit bandpass filter, and the tx PA output filter.  That's assuming that the buffers and PA are up to the task for 28MHz operation, which might not be the case...

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

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

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?

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.

CP 1993: sry I mint to flidgi

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?

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

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

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

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...
Rating:
#80: MFJ Cub 40m QRP CW Transceiver circuit walk-thru and review, plus bandsweep, ham radio MFJ-9340 5 out of 5

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#80: MFJ Cub 40m QRP CW Transceiver circuit walk-thru and review, plus bandsweep, ham radio MFJ-9340