I spent a few minutes today checking the filter gain balance on K3 1210. I fed in a 1uv signal from my XG2 and qualitatively measured the audio out when switching (XFIL) between filters. I started by finding the XG2 signal and zero beating it using the CWT/SPOT features and then switched between filters.
I have an 8 pole set as follows: FL2-2.8, FL3-1K, FL4-400, FL5-250. I have gains as follows: FL2-0db, FL3-0db, FL4-3db, FL5-8db. The audio is good with these settings except for FL5 which even though maxed out has a very noticeably lower output. By fiddling with the FL4 setting and doing comparisons it appears that FL5 could use another 3db to bring the output up to equal that of the other filters. Just to make sure I was in the center of the 250hz filter I tuned around with the FINE setting and moving around made no improvements in the output only the expected decrease as I moved outside the filter BW. Is there any remedy for this? Should I send my 250hz/8pole back for replacement? tia jim ab3cv _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
