Dwayne, The EQ idea sounds interesting, very. Now, that may take care of the 'objectionable' audio from the repeater through THAT specific audio path. Then I would suppose one more may be needed on the path from the remote base radio. ( That's assuming that the audio from that device is less than ideal.) But I will take a harder look at how it is setup at present and make sure that there isn't a simpler fix. I have PEAVEY dual 15 band eq unit that I used in my guitar rack ( when working at outdoor venues some additional low end may be desired and on hollow or wooden stages, you have to dial some of that out to avoid rumble, etc.). One of these would take car of both if push came to shove. THANKS for the suggestion very much. -Mike
From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of ldgelectronics Sent: Friday, September 12, 2008 1:23 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Comspec TS32P encoder control (CAT Audio) Mike, I have the same general question about repeater audio. What does it really supposed to sound like? In my systems, I try to make it so the repeater output sounds like the repeater input. In other words, it's close what you would hear if you were simplex. For me, it doesn't sound like CAT or Arcom. I'm sure that others have their favorite way to make their repeater sound (a little compression may also sound good). The repeaters that I have are mixed with Arcom and CAT controllers. In general, I like the sound of the (non-modified) Arcom better, but that is just me and it's not by a great amount. We have some users that like the CAT sound and some that like the Arcom. If you have a CAT controller that sounds bad, then there may be an impedance mis-match or you have the de-emphasis jumper in the wrong place. A couple of the CAT systems have a rack mounted 15 band stereo EQ in line with the receiver. The controller enclosure got RCA jacks mounted on the back (or side) and there is a 3 foot RCA cable between the controller and EQ. In this case, it worked out very well as the systems have a link receiver on it that also needed some audio shaping. The EQ can then be used to shape the audio any way you like. For this system, I went right in between the normal CAT sound (less highs) and the normal Arcom sound (a little brighter) to get what I perceived to be a "simplex" sound. Your mileage (or sound) may vary. Dwayne Kincaid WD8OYG > > Hmmm . interesting comment Bob. What IS a repeater supposed to sound like? > Having a CAT controller I can tell you I HATE the audio. ..stinks. A > cheaper ARCOM on the same repeater sounds far better. This sounds to me > like personal preference. But as this is THE BUILDER"S forum, has anyone got > some ideas on how to improve the CAT audio other than to replace it? - Mike > > > > From: Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com> > [mailto:Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com> ] On Behalf Of Bob M. > Sent: Thursday, September 11, 2008 7:44 PM > To: Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com> > Subject: Re: [Repeater-Builder] Re: Comspec TS32P encoder control > > > > Yup, that's all I'd do for an inverter. > > I have two repeaters using CAT200Bs and have had no problem with the audio. > I never measured it to see how flat it was. It's not broadcast quality; it's > not supposed to be. > > hdcom sells coax connectors, cables, etc. They're located on Lawn Guy Land. > > Bob M. > ====== > --- On Thu, 9/11/08, kk2ed <[EMAIL PROTECTED] <mailto:kk2ed%40comcast.net> > > wrote: > > > From: kk2ed <[EMAIL PROTECTED] <mailto:kk2ed%40comcast.net> > > > Subject: [Repeater-Builder] Re: Comspec TS32P encoder control > > To: Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com> > <mailto:Repeater-Builder%40yahoogroups.com> > > Date: Thursday, September 11, 2008, 6:23 PM > > Thanks, Bob. > > > > The NPN was my plan if no one had any better suggestion. > > All I'll > > need to do is tie the CAT's logic pin to a 10K pullup > > and 2n2222, > > then tie the collector to the TS32P's op amp input, and > > the emitter > > to ground. > > > > At least the CAT will enable the encoder based on rx > > activity of > > either RX1 or RX2 9 (when linked), and only if the rx's > > are actually > > active. > > > > For example, if the receive mode is COS&PL rather than > > COS only, and > > the encoder was tied directly to COS, then the encoder > > would thump on > > and off any time the rx squelch popped from noise while the > > tx is > > active, which could be an issue for some instances like a > > hub > > repeater. Better to let the controller handle it WHEN > > possible. > > > > I also don't care for the audio quality thru the CAT > > controllers. > > Somewhat restricted curve as compared to the others. I > > would never > > use a CAT on my own repeaters, but this is for someone > > else, so I'm > > using what they had on hand. > > > > This is a prime case of "you get what you pay > > for", and where the > > extra money spent for an SCOM or Link is money well spent. > > > > > > Eric > > KE2D > > > > > > > > > > --- In Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com> > <mailto:Repeater-Builder%40yahoogroups.com> , "Bob M." > > <msf5kguru@> > > wrote: > > > > > > Add a simple NPN transistor (and two resistor) > > inverter between the > > CAT and the TS32. Don't fight it, just put on your Borg > > hat and adapt. > > > > > > Of course you know that the CAT only enables its > > transmit PL when > > there's a valid COR signal on the input. You won't > > get PL activated > > on CW ID, courtesy beep, or anything else. For all that, > > you might as > > well just wire your receiver COR to the TS32 and bypass the > > CAT > > controller. > > > > > > Bob M. > > > ====== > > > --- On Thu, 9/11/08, kk2ed <kk2ed@> wrote: > > > > > > > From: kk2ed <kk2ed@> > > > > Subject: [Repeater-Builder] Comspec TS32P encoder > > control > > > > To: Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com> > <mailto:Repeater-Builder%40yahoogroups.com> > > > > Date: Thursday, September 11, 2008, 12:58 PM > > > > Has anyone controlled the encode function of a > > TS32P via a > > > > CAT > > > > controller's encode logic pin? > > > > > > > > I've wired several SCOM 7330s and Arcom > > RC210s to > > > > factory encoders in > > > > MS2000s, Micors, and even outboard TS32 encoders. > > The Scom > > > > and Arcom > > > > controllers can be configured to set their encode > > logic for > > > > either > > > > active high or active low (active high needed for > > the > > > > aforementioned > > > > units); however my latest project utilizes a > > CAT200 > > > > controller, which > > > > only supports active low. > > > > > > > > In the past I've used the logic pin to ground > > the input > > > > of the op-amp > > > > stage on the TS32's encoder, effectively > > shutting off > > > > the encoder. > > > > However, since the CAT controller is active low, > > that > > > > won't work, as > > > > the logic needs to be active high for the > > op-amp's > > > > input to pass. > > > > > > > > I don't prefer to use a relay or audio gate > > switch on > > > > the TS32's > > > > output because the impedance load of the encoder > > affects > > > > the overall > > > > exciter deviation. If anyone has played with > > Micors or > > > > MSRs, you > > > > know that adding or removing the encoder output > > from the > > > > exciter > > > > changes the load on the modulator stage, > > resulting in > > > > varying repeat > > > > audio deviation levels depending on the state of > > the > > > > encoder > > > > connection (even with zero tone level, ex: reed > > pulled). > > > > Hence the > > > > reason the factory boards control the encoder > > BEFORE the > > > > final tone > > > > output. The final impedance load of the encoder > > is still > > > > present at > > > > all times, with or without encode tone present. > > > > > > > > I also can't just switch the ground of the > > TS32 board, > > > > as it is being > > > > used as a full time decoder as well. > > > > > > > > Before I add some inverting logic between the CAT > > > > controller and the > > > > TS32, does anyone else have any ideas? > > > > > > > > Eric > > > > KE2D > > > > __________ NOD32 3435 (20080911) Information __________ > > This message was checked by NOD32 antivirus system. > http://www.eset.com > __________ NOD32 3436 (20080911) Information __________ This message was checked by NOD32 antivirus system. http://www.eset.com
