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JS8Call is a major upgrade to the FT8 type schemes. You can exchange actual content beyond ?FT8 call/grid/etc. And the msg control functions are amazing. Store and forward, acknowledgments, defined

Also, it sounds like you got a very early one with the analog VFO. If you are going to use a DDS (highly recommended!) then just remove the L4 inductor which is the yellow toroid right in the middle

You don't need the Raduino. You can use the QRP Labs VFO kit: https://qrp-labs.com/vfo.html I used one of these for a long time with mine, really liked it :) -- Ryan Flowers - W7RLF MiscDotGeek.com

?Dean - Does it work at all on 50MHz? James Duffey KK6MC Cedar Crest NM

Gerard, K1 pins are mislabelled. It should be same as K2 etc. Raj

*Hello, * When I look at the schematics of the Ubitx, I see that for K1, cabling is different from other relays. Yet when I look at some PCB's pictures, all 5 relays are identical. I think it’s a

I kind of figured as much... most of us know that, just wanting to help in case of a newbie! 73! Alex Netherton http://blueridgediscovery.org

Alex, Always best practice to have a low pass filter after the amplifier.? In my rig, the PA comes just before the LPF. It is already built. Dean

You might want to consider putting band pass/low pass filter on the output - push-pulls are known for being "dirty" with third order harmonics. At 16 watts, I doubt you would get in too much trouble,

Hi all - I decided to add some big-boy shoes to my homebrew QRP rig.? I decided to build the 16 watt power amplifier designed by EI9GQ, Eamon Skelton in his book "Building a Transceiver".? The amp

I ordered one but no schematic??

You might check out JS8call: http://js8call.com/ /g/js8call/messages?expanded=1 “The idea with JS8Call is to take the robustness of FT8 mode and layer on a messaging and network

Well, it's a good way to check out propagation conditions and, as Don said, to verify that your rig is working. 73....???? Mark?? AA7TA

Does anyone consider FT8 a useful mode to exchange any information beyond callsign, grid square, and signal strength? Ken, N2VIP

Don in your quote: “I'll still use it for checkouts, but as a communications medium -- it is the wrong tool. “ Which one are you referring to the sound card or FT8? 73, Skip Davis, NC9O

When we do the "Ashar Interface Method (AIM)", we are using a sound card, it's on the motherboard. Many of us use AIM and it works perfectly!? When the audio jacks on my tired computer broke (thanks

Hello, Hello, For simplicity and compatibility with the KD8CEC software (Intended for Ubitx pcb), I will simply modify the schematic to be in line with that of the Ubitx V6. So I will use the

Hello Gerard, Here is the code segment for the standard TX filter selection using the KD8CEC version 1.2 software: #if UBITX_BOARD_VERSION == 5 if (freq > 21000000L){? // the default filter is with

The highest value of inductance and capacitors should be the lowest band, the next highest the next higher band etc

Dear Skip and Mike Thank you so much for your precious time. I am working to build pre-amplfier. I will come back later with updates. de Girish KJ VU2VTG wrote: