Kindly created by Paul OM0ET
I hope everyone find the content of the video of value. If you do, hit that ‘Like’ button. Please share if you think it would benefit someone from watching it.
Thank you Paul!
Lucy
mcHF QRP transceiver
Small and inexpensive homebrew HF radio
Thank you, Chris , i had r0.4 pcbs from you way back. Facing an issuecwith si570 lo and associated iq generation. I had used 74lvc74 instead of 74lcx74. I had byepassed the discrete gates. Like u9, and 2 more at the output. Rig works well up to 20mhz output. Beyond that the iq output is almost nil.
Later version you had used po74g74. We cant get ut to India.
Inwonder whether r 0.4 worked those days beyond 21mhz , like upto 10m etc.
Please try to support to make up for the rest of bands.
Regards and wishing good health and happiness
Sarma vu3zmv
I would like to order either a kit or a pre-build radio, sent to Germany. The page says “available around the end of March” and we are almost there. Is that still on plan or do you expect delays (covid, stuck container ships in the Suez canal, whatever)?
Hello,
I would be interested for an “assembled one”. Want to know the price and also if it can be delivered at my QTH in New Delhi.
Hope to hear from you soon.
Thanks
Hello Sandeep
We only offer assembled units in the US, EU and Brazil at this moment. I can only offer you a kit when we re-stock.
Sandeep,
Sinosh vu2ln has ui board ver3 and rf board ver4 if you are interesred . Pl contact him. These are older revisions,though.
Mvs sarma vu3zmv
Paul, a super video and most watchable. You didnt show any setting up or bias adjusting etc…did you actually just finish the rig and turn it on and have a qso? Or was there a chunk of setting up you didnt show? Lovely video.
Can I get a complete set of a transceiver to Ukraine and how much will it cost?
If you visit the ‘Shop’ page, select the chosen configuration, chose your ‘Postage Option’ and the price will be displayed.
If Ukraine is part of the EU ( which I think it is) just select ‘EU recorded’
Good radio! I’m interested in the kit, do you ship in the Philippines?
Sorry Warren, just seen your post here. Hope you enjoy the radio when you receive it.
Lucy
Great Video! Many thanks.
Question: What exactly counts as a “turn” when winding a toroid? Can I assume it is one full wrap around the core, i.e. 360 degrees? Do partial wraps at the end count?
That is very good question. It’s more like how many times the wire goes as a loop on the inside of the toroid. If you are not clear on what I mean by that drop me an email and I’ll draw you a sketch to make more sense (djchrismarc – at- gmail -dot-com). It’s good idea to check with LC meter if the inductance matches the on the schematics. If it doesn’t add a turn or remove a turn to make it match or go as close as possible.
Hello, I am new to radio but as long as the (enamelled) wire is wrapped to follow the toroid surface closely, to leave no gaps (i.e. tightly) then I believe the meaning of “full turns” is exactly as you say by each 360°. it would be nice to hear both yours and my beliefs confirmed? Good fortune!
Hi
Yes, this is the means of 360 turn. I’ll email you a link to a video that Paul did on building mcHF.
Hello
” Fully assembled version – USA Only” can i order this and deliver to Australia?
Hello Dennis
I should be able to arrange that for you. Price would be slightly higher as the one we calculated with this kit is for internal US postage. Maybe you can drop me an email with your address and I can check how much extra will be for postage before you decide. (djchrismarc( at )gmail.com)
Lucy
Hello;
I would like to buy the assembled radio for the US. Do you have any idea when it will be available again?
Also, I’m pondering whether to get the internal ATU or the Elecraft T1 ATU for driving an 80 meter NVIS dipole. My concern is of course getting the maximum radiated power from the antenna. To do this, I currently do two steps: First adjust overall length for minimum SWR, then use a manual ATU at the feed point to tweak it to minimum SWR. I could do the same with the Elecraft, but not the internal tuner. Your thoughts?
Perhaps this is best posed to the groups.io folks.
Best Regards and thanks for your time;
David
AE7LM
Week commencing 15 Feb is my estimation.
Very nice video. The receive audio sounds good and nice TX audio report. I noted on the screen in red “Sensor!”. What is happening?
What kind of warranty does the radio have?
Hello Bill. If you refer to the kit configuration on our order page they don’t come with guarantee as it’s a DIY project. Very rare we have had issues with components being damaged during transportation ( or other similar issues) and we offer replacement in these cases.
Regards
Lucy Jeliazkova