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Yep that fixed it! Thanks again! Dave KC3GPM

Thanks, Yves! That makes total sense. I’ll fix it and report back. Dave KC3GPM

Hi Dave,You don'thave to connect the via points to the ground.Ground connections go on the other side of the capacitors and buttons.In other words, the capacitor is connected in parallel to the

Hello, When I only had the tune button connected, the tuner started up in a normal mode. Now that I have added the auto and bypass buttons, it always starts in test mode. I have the caps connected

Hello, Thank you all for the comment and hints I really look forward getting the voltage readings form Russ I will order some new torroid the wire in the kit was some teflon looking wire so i do not

I found that the first two kits I received had real sharp edges inside the toroids. I had to take a xacto knife and smooth them as I knew they would cut and shot the wire to them. If you order the

Frans If you measure with a voltmeter on the cathode end of the schottky diode (before the voltage divider), do you still see the same degree of error between the readings on low band vs 28MHz? If

In the manual's section "change of default settings", N7DDC mentions for cell 31 " If the power does not exceed 40 watts, it makes sense to use a tandem-match with a ratio of 1: 5 turns, which will

Russ, They mention in the paperwork that you should not lower the tune wattage lower than 5 watts as it does not give GG ou the best results when in tune mode. Rather not giving you the best match. I

Frans, Most likely you have a mis-wound coil or the input pin from fwd power to the pic chip got shorted to another pin. I am working on my own kit now as I built a couple for some friends. When

Hello all, I tried to understand the power calibration on the SWR bridge But it is unclear what the reading is I have KX3 set to 10 watt and connected a dummy load as antenna on the output of the

Hi Dave,I just connect the capacitor between both pins on the push button.?It is just easier than on the PCB.?You need to connect a ground wire common to the 3 buttons.73Yves ON4KCY?Sent from my

??? ??? Dr John , What is the minimum-power setup in EEPROM and what is your power out from the UBITX ? Check cells 4,5,6 and 9 of your EEPROM in PIC,? versus your situation . Also keep in

Got it. Thanks, Russ!

In essence, you are momentarily grounding RB1 or RB2 to implement the Auto or Bypass modes, so the switches can be routed to any convenient ground point on the board. And the 100 nF capacitor can be

I powered up last night with one button and no release of the magic smoke, so I’m happy about that. Now that I’m ready to wire up the last two buttons, I have one quick question. I understand the

If you plan on using this tuner with QRP rigs, I would suggest removing 5 turns from each side of the BN43-202 and changing the EEPROM cell for QRP. As for the power dropping over time, can you feel

Hello Group Don was a big help in my previous problem but now the questions are starting to come up. If I put a dummy load on the output of the tuner I get a 1:1 SWR but only a 78% efficiency. I

Ron You have solved my problem. I hooked the tuner up to an FT857 and cranked it down to 10w and it tunes right up. I had measured the output of the UBITX and it was putting out at least 7w on

Excellent!