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Also make sure you didn't unplug something when you pulled the cover off. Vince.

It can't be anything blown up. Can you measure how much is the current draw on receive? It should be around 150 ma. That is an indicator that things are alright. - f

OK, it increases, but not by much. I ran an LTSpice simulation of the Bitx40 final, see a 50% rise in peak voltages when the antenna goes open circuit. Not something I had ever though much about.

Oops:? After completing my build in a metal cookie box,? transmit was fine with 5 watts to dummy load on 40 meters.? Receive had good rf noise, lots of birdies, but no real signals except for some

If the LPF is presented a high impedance load (such as a broken antenna connector) the voltages will go up. Though not as high as the 3000 ohm example suggested, the IRF510 cannot send 10 Watts into

Hans, My calculations were for an L network that matches high impedance loads, not for LPFs that have low impedance on both sides (like the qrp labs LPFs). Btw, folks, the qrp labs labs use very high

Hi, It's been a while since I got that part working, and I may have done something weird or mistaken and forgotten about it.? Tomorrow morning I'll double-check the pins again with a voltmeter to

Hi David, No reason the teensy couldn't be put on headers. If I end up selling this particular PCB, the kit form would be SMT pre-done, all the through-hole to be done by the end user (Which isn't a

Xcott, interesting about the non-inverted RTS signal. For myself (and some others), I found that WSJT-X will pull RTS (or DTR) to ground when PTT is triggered. FLdigi has an option for "RTS +V" to

Hi, I didn't invert anything.? I'm using WSJT-X, and I just set it to use the RTS pin for PTT.?? The RTS pin goes high on transmit, and it ties my uBITX PTT line to ground. Gordon, thanks for the

Congratulations that you got it to work. The cost of the USB to RS 232 converter and related trouble convinced me to add the necessary hardware to do diodde detection. We also added trim pots to set

Are you related to the family of the same name from Malcolm rd in Jamacia Plain? (Boston) Ma. Bill Schmidt from there was a WWII vet and neighbor of my Grandmother. Had to ask! Steve kb1chu PS I'm on

You did not have to use a signal inverter with the easydigi or did you flip it in software? ? ?David

Using old IDE cables is a very good idea. Note that there are many types of cable available, but most of them will be either 40 wire or 80 wire cables. the difference in the newer (ATA) 80 wire cables

Those will work, but the 15mm shaft version is even better! Thanks Lucian Mike [email protected]> wrote:

Hi, Just to chime in here:? I used the EASY DIGI and a cheapo USB-to-RS232 I bought at the local electronics store.? Wired everything up in the conventional way, tied the EASY DIGI's PTT-HI to the

Would these work? https://www.mouser.com/productdetail/bourns/pec11l-4020f-s0020?qs=sGAEpiMZZMvy8cVzszrmR8xmhWWclkAFIYEy8Wpdzjs%3D

Hi Michael Thanks for the reply. Ok on the next update from Allard. That will be ideal if the mode problem is solved, I will patiently wait until the next release. Regards Peter G4NJJ

Now that I got Han's attention, I'll start a new thread. Not quite true.? The output MSynth is as reported, low integers but not in integer mode on the few random samples I've tried so far. The PLL

Also, I wonder if a modular design approach could be used, instead of monolithic. Say a better AGC is devised at some point - how to upgrade/replace it? Same question for the filter banks, what about