[Elecraft] problem KRX3

Hi K3 sn 709 just installed: 2 x KSYN3A 1 x KXVV3B audio mod (little board with 2 caps and 2 power resistors) replaced 6 tin pins on PA and main board KPA3 power connectors replaced power fans with 2 x Noctua's did mods on KBPF3 x 2 Result - radio still works :-) BUT no signals on the sub

Re: [Elecraft] problem KRX3

John, Check the SUB-IN and SUB-OUT connectors on the KRX3 to be sure they are properly inserted and seated. Also re-check the cables for the SubRX synthesizer. Do you have the KBPF3 installed? That is required for receiving the low band. And you should upgrade the KBPF3(s) with the newly

[Elecraft] Problem KRX3

Hello there With no Antenna connected and all parameters the same for Main and Sub VFO, my sub receiver produces only about 50% audio compare to my main receiver. This results that i have to set my sub audio knob to the 4 oclock position to recieve equal audio in left and main headphone..