Drew, I covered that in Slide 8 of the presentation. The SDR is always connected to the MAIN ANT via RX ANT OUT when RX ANT is enabled in the K3, regardless of which RX ANT you want the K3 to monitor.

I've been using a Perseus SDR as a transceiver panadapter for about 12 years now. I highly recommend ignoring K3 IF OUT; use K3 RX ANT OUT instead. This works with many radios, not just the K3. See my

Also, don't forget to UNPLUG THE CABLE from the analog LINE IN port, which you may have left in place. Connecting anything to that connector will OVERRIDE the K3's USB LINE IN, and you'll get no audio

Thanks Joe. I just spent some time on the phone with K7EG, and indeed, "Allow apps to access your microphone" was OFF (must be a new Windows security setting). So, the USB Audio CODEC could not be ope

If CONFIG:RS232 is set to 38400 instead of to USB, especially when using the CBLP3Y, you won't be able to connect to the K3 over the K3 USB connector. Set CONFIG:R232 to USB, find the virtual serial p

The most common reason that a K3 stops working after being transported is that the little interface card that connects the rear of the Sub Receiver box to the motherboard becomes unseated from the pin

Long shot: In normal mode (not TEST mode), no power out can happen if CONFIG:TX INH is set to Lo=Inh instead of to the default: OFF. To check that CONFIG menu setting, first set CONFIG:TECH MD to ON.

Thanks John. FYI, I plan to ship yours tomorrow. 73, Bob, N6TV

The KEY OUT jack GROUNDS the center pin, whereas a shorted phono plug simply completes the DC relay circuit between shield and center (without grounding it). That's probably why it doesn't work. 73, B

Among other tricks, the "Serial Box" (S-BOX or S-BOX-USB) offers a plug and play solution compatible with RemoteHams software (or simple Windows batch files) to power a K3 ON and OFF remotely. With th

If you are using a K3S or any FTDI-based USB-to-Serial adapter, please follow the important advice documented here to prevent the adapter from generating spurious signals on the DTR and RTS pins: http

Play M1 (tap M1): SWT21; Play M2 (tap M2): SWT31; Play M3 (tap M3): SWT35; Play M4 (tap M4): SWT39; Swap banks (hold REC): SWH37; (Toggles playback between KDVR3 message Bank 1 and KDVR3 message Bank

If you're keen on using the IC-7610, then you should appreciate that the KPA1500 understands "Icom CI-V" (exact frequency), whereas the KAT500 and KPA500 do not. This means the KPA1500 internal tuner

For those who would just like a plug and play solution, I designed the S-BOX (Serial Box) for just this purpose. It's like my Y-BOX, but splits the 9-pin K3 Serial port (or K3S RJ45 Serial Port pigtai

Looks like my embedded images may have been stripped by the Groups.IO reflector. You can see the before/after here in this Google shared photo album: https://photos.app.goo.gl/ruccJEj27QuySzmb7 73, Bo

Wolf, If you don't hear any noise in the receiver, or see the S-meter go up on your K3 at the same time that the noise floor appears to rise on your P3, then it's probably just leakage into the P3 its

In the K3S, you must first set CONFIG:RS232 to USB, then power cycle the radio. Then look in Windows Device Manager (Start, Run, devmgmt.msc) to determine the correct FTDI serial port. See also this i

Repeating, it is now at http://ftp.elecraft.com/K3S/K3S_comparison1.pdf 73, Bob, N6TV

Did it work via AFSK (speaker audio from sound card wired to LINE IN) or FSK (keying circuit on Pin 1 of ACC port)? Assuming these are all FTDI USB-to-Serial devices, MMTTY cannot directly open any of

Lou, Yes, that's right, if CONFIG:TX DLY is set too high, the internal keyer will sound fine (because it compensates), but external keying will sound too light. Of course if you're using CW QRQ mode b