ok, i got 2 bone stock hr-2510s. only the channel expansion mod done.nothin else. when i talk on side band after i quit speaking (while still holding the mic key down.) the radio will hold a small carrier about 1/4 of the peak watts.???? wtf. if i let up on the mic key the meter drops to zero watts. when i key back up its on zero till i modulate. stop talking while holding down the mic key and small carrier stays till i unkey. its almost like its on am. both of these stock radio do this. the doc tune 2510s i got do not do this. is this some factory thing to prevent the total loss of carrier on ssb. ive tied different mics. mic gain clear off or down and it still does this. ONLY IN THE STOCK RADIOS.