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The schematic of the N7VE bridge is readily available from many sources. I used the one from wb3gck.com as shown on his Z-Match tuner; just implement the bridge portion if you want. There are several

aaz...OOPS K7DDC should read? N7DDC n3aaz

ps ... then the K7DDC ATU10 becomes the perfect match ...BUT?!!! CAUTION !!!? ?The SWR indicator must be in TUNE mode (NOT bypass) ELSE the ATU-10 WILL POP the finals? while doing it's

Too easy ""...(mini SWR indicator)...Or better yet make one, they’re very simple and low cost. Light weight, it won’t add any significant burden on your ?field operations.""...w6wu es have not

Would it be possible to turn the power down automatically as the SWR rises to protect the PA?? Maybe start at a SWR of 2 and reduce to the specified limit by 3. Restore the power, ideally slowly,

You can build around an Arduino chip or board, which you might get cheaper from a Canadian source for Arduino components? https://www.zs2ez.co.za/k3ng-keyer.html

I just read Frank DL2GRF's post and noted that we have a common issue, small component orders are eclipsed by shipping and handling costs. After spending some time looking for the once common

“ Often my antenna is a rather high Q base loaded vertical in which small adjustment to the coil position can result in big swings in feed point impedance.” If you’re concerned about protecting

Consider the TinySA Ultra instead: https://www2.randl.com/index.php?main_page=product_info&products_id=75872 It is quite advanced in features and functions compared to the previous TinySA model; I

Thanks, but the problem is almost certainly caused by the STM32 which no longer communicates with the computer. All I have left is the recovery of the si5351 and the TCXO 73 iw2ggb FC Il mer 28 feb

Hi Ronan Yes, also on my list - is to make ALL the controls configurable... If people diverged from the default then of course the laser etched printing on the front panel wouldn't match the

Could one of the front panel long-presses be made configurable? That way it could default to the present way of working but could be made to jump straight to a menu of choice if

A new chat has been created: Hi folks, I have the problem with Rev.2 board (shipped before 2024) where the modification with the 1N4148 diode is required to prevent IC402 from dying. This is

Hello Tisha The MOSFET gates are particularly ESD sensitive. It's the Drain which is connected to the external jack (via a resistor). 73 Hans

Thank you again Cliff, I should keep the list handy, Thor is of interest at the moment. 73 rRon VE8RT "Cliff" <ae5zaham@...> wrote:

Yes, Ron. I was over zealous in what I said. Indeed PSK, Throb and a couple others won't for the reason you said. Only single tone modes like Thor, Olivia, Contestia, DominoEX, FSQ, MFSK, Hell, RTTY,

Hi Jonathan The analysis is too simplistic. The filters can be designed approximately using some theory (such as your calculation) but then in the real world the results differ considerably. There

Hi, I am currently in the process of designing a band pass filter for a homebrew CW radio I want to build. I was looking at the bandpass filter design for the QMX and was confused because the passband

Hi all I do think W6CSN's request is fulfilled by the SWR feature in the hardware menu. However, it does need operational convenience improvements as Garrett KC3UNP says. It was already requested and

I find that the SWR feature under the hardware tests menu works very well for tuning (and power level of that SWR test is configurable in the setup menu to boot!), though it’s a bit tedious to