I have a K2, mid 5000 serial number, mic input wired for Kenwood, 50 amp 12 volt Amidon power supply, with a KPA100 running 100 watts. I can easily switch my HM-10 mic between transceivers using seperate audio cables for each radio to perform on air testing. When using a Heil microphone HM-10 with dual element (HC-4 or HC-5) with Heil shielded cable and mic plug wired for Kenwood and no external pre-amp for the K2, audio setting SSBA is at 2, and compression setting SSBC is at 2-1, and asking other hams for a critical audio report I am being told that I sound a little fuzzy around the edges on the K2. I am using an Amidon type #43 toroid with seven turns of mic cable just before the mic input to the K2. Any extra Heil mic cable is coiled up as common mode choke about 5 inches in diameter. The distortion might be a little more with the wider HC-5 element. The HM-10 mic works fine and gets great audio reports on a Yaesu FT-1000D - same antennae and same power levels. Only when asking for an audio report does the "little distortion" report come up. I have also applied the grounded K2 mic connector mod.
Is this as good as it gets with the K2 audio ? Am I asking for too much for Heil HM-10 with the K2 to sound like the Yaesu FT-1000D ? Does audio compression in the KSSB create a little distortion in the audio ? Thanks Joe - K9DMV ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html