> -----Original Message----- > From: [EMAIL PROTECTED] > To: Repeater-Builder@yahoogroups.com > Sent: Wed, 31 Jan 2007 9:35 PM > Subject: [Repeater-Builder] Help CG Decoder Mastr ExecII > > Hello, anybody of you can tell me how can I retune the band pass filter > on CG Decoder into Mastr ExecII? > This module is made by Glenayre for GE and the part # is 134D6663G1 (G2 > & G3) > The module is set to decode CG only. > I want to tune at 103.5Hz. and I use another encoder for the TX. > Maybe the best procedure is to put jumper to force the module to encode > at 103.5 and after adjust the band pass decode pot for the best > decoding… > If you have other solution, let me know.
A CTCSS board from a GE ExecII is NOT going to be tunable. I suspect there is one pot on it, and it will be an encode output level adjustment. There were a couple of different means of determining the tone frequency. The oldest may have a large mechanical reed that acts like a tuning fork. The most likely style will have a small white ceramic chip that has a tuned circuit in it. Either one will be labeled with the tone freq it's on, and if it's not what you want, it will need to be changed. There was also a crystal controlled unit that looks like a small round metal-cased IC. Again, it would need to be changed. There were also some newer ones that used a bank of dip switches. If you have one of those, consider yourself lucky! They are a bit more rare. For those, poke around maybe Repeater-builder, Doug Hall's GE reference page, or others and you'll probably find a chart to set the switches for the tone you want. -- Jim Barbour WD8CHL
