Looking at the amp I don't see the low pass filter that you are referring to. I just remembered, I have another one of these same amps in the basement that was given to me, so I at least have a spare. Can you describe what the low pass filter might look like?
Mathew --- In [email protected], "KD4PBC" <[EMAIL PROTECTED]> wrote: > > No it just buffers the COR no audio delay. > The amp will work at 145 it will just not be as efficient. That should not > be a big problem. > Just stay within the limits of the tube. > > There are 2 different amps for the VHF micor the 250 watt used in the PURC > and Micor and the 350 Watt used in early PURCs and all Micors. > The only difference is a resistor on the screen I think. It's a big wire > wound mother. > The PA and most importantly the tubes will last forever if you remove the > rear shield and relocate the low pass filter to the right side (from front) > You will see the holes there already. Then mount 2 4" muffin fans on the 2 > heat sinks. > It takes them from to hot to touch to cool. > We did this on about 50 paging transmitters back in the day after we added > the fans we never replaced another tube and I was there for 3 more years. > These transmitters were on P6 (158.7000) and were keyed for an average of 18 > to 20 hours a day. > > Robert.. > > -----Original Message----- > From: [email protected] > [mailto:[EMAIL PROTECTED] On Behalf Of n9lv > Sent: Tuesday, September 02, 2008 7:52 PM > To: [email protected] > Subject: [Repeater-Builder] Re: TPN1132A Wireup help and questions > > If I understand Motorola right, this is would serve the same purpose > as a audio delay board to remove the squelch tail heard on the unkey > of the mic? > > Also, how clean do you think the amp might be down at 145.410 MHz and > not be spurious? I am sure there will be a reduction in power, but > if I get 300 watts out I would be happy. > > Mathew > > > --- In [email protected], "KD4PBC" <900@> wrote: > > > > There are 100s of ways to do it I always use the F1-PL or the DC > transfer > > for the Chanel element ground but others just jumper it. > > Squelch gate card is nice for buffer from audio squelch card. > > > > Robert.. > > > > -----Original Message----- > > From: [email protected] > > [mailto:[EMAIL PROTECTED] On Behalf Of n9lv > > Sent: Tuesday, September 02, 2008 7:38 PM > > To: [email protected] > > Subject: [Repeater-Builder] Re: TPN1132A Wireup help and questions > > > > I would agree on the b/y and b/g as being a switch. As for the > cards > > in the cards installed, there is just the Line Driver and the > Station > > Control. I have the tone cards, repeater card, line card and > squelch > > card, but was told they were not needed. > > > > Mathew > > > > --- In [email protected], "KD4PBC" <900@> wrote: > > > > > > Mathew, > > > Correct on the solid yellows and blues each one is an end and the > > one with a > > > tracer is the CT. > > > > > > I think that the blue/yellow and the brown/green go to what would > > have been > > > the rear door interlock. > > > > > > Did not make it to warehouse today (car troubles) I will take > > pictures and > > > notes on a complete station I have at the shop. > > > > > > What cards do you have in card cage ? > > > > > > Robert > > > > > > -----Original Message----- > > > From: [email protected] > > > [mailto:[EMAIL PROTECTED] On Behalf Of n9lv > > > Sent: Tuesday, September 02, 2008 6:48 PM > > > To: [email protected] > > > Subject: [Repeater-Builder] Re: TPN1132A Wireup help and questions > > > > > > Here is a list of parts in this system, thanks to all and please > > bear > > > with me as life has been hard with God only knows what now ales > me. > > > > > > TPN1132A - LV PS > > > TPN1131A-1 HV PS > > > TCN1107A - REMOTE CONTROL MODULE > > > TLN4727A - RECEIVER > > > TLD1942B - EXCITER/DRIVER > > > TLN1675A-1 METERING CHASSIS > > > TLD5082A - POWER AMPLIFIER > > > > > > I am looking at the scematics and trying to figure out most of > what > > I > > > can. Reading them is not bad, but difficult to keep track of. > > > > > > Here is a list of wires that I am not certain with at this time, > > some > > > of which I know after looking at the schems, is almost straight > > > forward. > > > > > > From the top of the wiring harness from the power amplifier. > > > There is two wires with c-clips on them, others call them another > > > name, regardless the colors are: > > > > > > Blue/Yellow (about a 22g wire) > > > Brown/Green > > > > > > These connectors are slip on type, I would think they attached > > inside > > > the cabinet as I don't see anywhere on the system to plug them > in, > > > I'm thinking possibly safety switches. > > > > > > White > > > White/Black > > > Brown/White > > > Black and Dark Grey together > > > Solid grey > > > Brown/Yellow > > > > > > These wires have ring terminals on them > > > > > > Red/Green > > > Red/Yellow > > > Red/White > > > Two Grey Together > > > White/Green > > > Solid Grey > > > > > > There is a wire that has a small round push on type just behind > the > > > Remote Control, I'm thinking this must goto J5 on the metering > > panel, > > > only an assumption. > > > > > > Going all the way down to the HV PS there is a group of wires > from > > > the harness. > > > > > > Red and Black 12 Guage wires, that follows up to the exciter, I > am > > > sure this is the 12v source for the transmitter. > > > > > > The other wires are: > > > > > > Brown/White > > > Brown/Yellow > > > Tan/Black > > > Red/Yellow > > > > > > And last but not least, wires from the HV going to the LV, which > I > > do > > > believe will connect to TB1 on the LV and if correct should be as > > > follows: > > > > > > TB1-3 = Blue > > > TB1-1 = Blue/Yellow > > > TB1-2 = Blue > > > TB1-7 = Yellow > > > TB1-5 = Yellow/Green > > > TB1-6 = Yellow > > > > > > Thanks for the help > > > > > > Mathew > > > > > > > > > Going to make another assumption here, there should be no > > difference > > > in both solid blues or solid yellows, and that they should be > > > reversable between either TP1 points? > > > > > > And the AC input power goes to TB1 on the HV power supply > > > > > > --- In [email protected], "KD4PBC" <900@> wrote: > > > > > > > > No problem Mathew just don't want to lose what few Hams we got > > left. > > > > > > > > I will look at a station today and let you know where the wires > > go. > > > > How are you on the harness ? > > > > > > > > Robert > > > > > > > > > > > > > > > > ------------------------------------ > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > ------------------------------------ > > > > > > > > Yahoo! Groups Links > > > > > > ------------------------------------ > > > > Yahoo! Groups Links >
