Yes I have and I know they can be hard to see. But don't think thats it but will be tearing it a apart again and clean and resolder as that did seem to make progress with the issue. At first with the problem I could get the sensistivity up to .35 better than spec with pulling out the RCA jack to only the center pin connected now that doesn't help much so why I think it was bypassing the loss of the filter stage and the fact that possible resoldering the coil base improved the issue concurs with my thought. Randy
--- In [email protected], "Chuck Kelsey" <wb2...@...> wrote: > > Did you check the front end for tin whiskers like someone else posted? They > can easily destroy sensitivity. > > Chuck > WB2EDV > > > ----- Original Message ----- > From: "wb8art" <wb8...@...> > To: <[email protected]> > Sent: Saturday, May 30, 2009 9:28 AM > Subject: [Repeater-Builder] Re: Exec II input problem > > > Hi Jim, I am using a Wavetek 3001. I also have a MVP here with the same > helical filter and it doesn't exhibit this. Hence fairly convinced that > something is going on with the Exec's filter. It seems like the signal is > getting better because were loosing the loss of the filter stage. Update > now is that I have resoldered the base of the first coil and ant connections > and it has got a lot better. I don't see the change near as much, but moving > the cable around still does impact the signal.. The RX freq is 448.625 and > sensitivity seems to be .72uV for 20db of quieting versus spec of .5uV. So > still fighting it. > > Randy >
