Hi I checked the 10 volt reg and it was a bit squirrley....I replaced it and it seemed better. But now I can not transmit my tone! I guess I have a jumper not connected. I am trying to find the drawing for the right jumper settings and connections on the 10 volt card.
I have the #1 socket grounded. I read that putting a 5C element in any socket will help the stability. Any ideas? Steve --- In [email protected], "Glenn (Butch) Kanvick" <hotl...@...> wrote: > > Steve. > > Make sure you check the jumpers, if you switch the cards. > > Butch, KE7FEL/r > > On Wed, Aug 4, 2010 at 6:11 AM, steve <w4...@...> wrote: > > > > > > > > > I am using a PLL exciter with a 5C Icom. I am going to check the 10 volt > > supply. I have a couple of 10 volt cards that I will swap out if needed. > > > > Thank you > > Steve > > > > --- In [email protected]<Repeater-Builder%40yahoogroups.com>, > > Mike Morris <wa6ilq@> wrote: > > > > > > At 03:33 PM 08/03/10, you wrote: > > > >Hello all, > > > > > > > >I have having a severe drift problem on my GE Mastr II 2 meter > > > >repeater. The transmit freq will drift nearly 2 KHZ over a 5-10 > > > >minute period. I have changed exciters and used a different ICOM but > > > >no improvement. The building that I am in is not ventilated and is > > > >very very hot. I put a high/low thermometer in and one day the high > > > >temp in the building was 114 degrees. Is this the problem? > > > > > > > >Thanks for any help. > > > > > > > >Steve W4SEF > > > > > > Can you elaborate on the situation? > > > Is it an FM exciter or a phase mod exciter? > > > Is it an EC, a 5C, or 2C Icom? > > > > > > Have you read <http://www.repeater-builder.com/ge/m2icoms.html> > > > especially the paragraph that starts with "Any voltage change on the > > > +10vDC power supply line will change the frequency on the Icom..." ?? > > > > > > You will also what to read the page at > > > <http://www.repeater-builder.com/tech-info/temperature-compensation.html > > >. > > > > > > An idea on cooled down a building before you set the frequency... > > > I once took a couple of cheapie box fans and setting one to blow > > > in (at floor level) and the second stacked above it to blow out (at > > > the top of the door level), and with a piece of cardboard in between > > > them as an air dam. The cardboard was cut from the side of a large > > > cardboard box that was used to ship a washing machine (ask for one > > > at any appliance store). > > > > > > You could do something similar for the time period needed > > > to set the frequency - your target is 75 to 80 degrees F for > > > about an hour. > > > > > > Look at page 5 of this: > > > <http://www.repeater-builder.com/ge/lbi-library/lbi-38505a.pdf> > > > Yes, it's a receiver LBI, and you have a drifting transmitter, > > > but the temperature notes apply. > > > > > > Mike WA6ILQ > > > > > > > > > >
