---------------------------------------------------------- Avionics-List Digest Archive --- Total Messages Posted Sun 07/17/05: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:06 AM - Re: KMA20 installation manual or ?? (Mike Larkin) 2. 09:03 AM - Re: KMA20 installation manual or ?? (David Lloyd) 3. 04:37 PM - Re: Transorb? (Bob C.) 4. 11:11 PM - Re: Transorb? (NYTerminat@aol.com) ________________________________ Message 1 _____________________________________ Time: 08:06:49 AM PST US From: "Mike Larkin" Subject: RE: Avionics-List: KMA20 installation manual or ?? --> Avionics-List message posted by: "Mike Larkin" The speaker input to the KMA-20 is a load for the output of the com radio being used. Some com radios need a load for the power generated for the speaker output and the KMA-20 gives you a place to send it. On all newer radios the com has its own load and connecting to the speaker input on the KMA-20 is not required. That being said, I'm not sure about the TKM stuff. The folks at TKM do things a little different and it may be in your best interest to connect the radio to the speaker input. The com input on the KMA-20 is the input that the audio panel will be using for your headsets and speaker output, this must be connect for the com to work properly. Mike Larkin -----Original Message----- From: owner-avionics-list-server@matronics.com [mailto:owner-avionics-list-server@matronics.com] On Behalf Of Greg Puckett Subject: Avionics-List: KMA20 installation manual or ?? --> Avionics-List message posted by: "Greg Puckett" Hello, I'm installing a KMA20 and while I have the pin-out from aeroelectric.com I need a couple of questions answered. It appears that the KMA20 has a speaker input and a phone level input from each Comm. The TKM radio has a speaker output and a Comm. output. I'm assuming that I should not be connecting both of these, but I'm not sure. Does the KMA20 have a speaker level and a phone level input available just so you can connect a navcom that may only have one or the other. I'm worried that both of these inputs will be summed if I connect them both and the overall volume will be twice as loud as it should. Does anyone have a KMA20 install manual handy that may have the answer to this? Thanks, Greg -- -- ________________________________ Message 2 _____________________________________ Time: 09:03:28 AM PST US From: "David Lloyd" Subject: Re: Avionics-List: KMA20 installation manual or ?? --> Avionics-List message posted by: "David Lloyd" There maybe another condition to consider about the KMA-20. Sidetone to your headset. Seemed to me that it did not have the circuit path to have sidetone... from the mike. This may be a problem only for earlier models of -20. However, there is a way to add a resistor to the circuitry such that it "leaks" some mike power to the headphones. Many years ago, I saw an avionics shop make this circuit adjustment but, can't tell you the paths that he tapped, with the resistor addition, to bring sidetone to the headset. David ----- Original Message ----- From: "Mike Larkin" Subject: RE: Avionics-List: KMA20 installation manual or ?? > --> Avionics-List message posted by: "Mike Larkin" > > The speaker input to the KMA-20 is a load for the output of the com > radio being used. Some com radios need a load for the power generated > for the speaker output and the KMA-20 gives you a place to send it. On > all newer radios the com has its own load and connecting to the speaker > input on the KMA-20 is not required. That being said, I'm not sure > about the TKM stuff. The folks at TKM do things a little different and > it may be in your best interest to connect the radio to the speaker > input. The com input on the KMA-20 is the input that the audio panel > will be using for your headsets and speaker output, this must be connect > for the com to work properly. > > Mike Larkin > > -----Original Message----- > From: owner-avionics-list-server@matronics.com > [mailto:owner-avionics-list-server@matronics.com] On Behalf Of Greg > Puckett > To: Avionics-List@matronics.com > Subject: Avionics-List: KMA20 installation manual or ?? > > --> Avionics-List message posted by: "Greg Puckett" > > Hello, > > I'm installing a KMA20 and while I have the pin-out from > aeroelectric.com I need a couple of questions answered. > > It appears that the KMA20 has a speaker input and a phone level input > from each Comm. The TKM radio has a speaker output and a Comm. output. > I'm assuming that I should not be connecting both of these, but I'm not > sure. > > Does the KMA20 have a speaker level and a phone level input available > just so you can connect a navcom that may only have one or the other. > I'm worried that both of these inputs will be summed if I connect them > both and the overall volume will be twice as loud as it should. > > Does anyone have a KMA20 install manual handy that may have the answer > to this? > > > Thanks, > > > Greg > > > -- > > > -- > > > ________________________________ Message 3 _____________________________________ Time: 04:37:41 PM PST US From: "Bob C. " Subject: Re: Avionics-List: Transorb? --> Avionics-List message posted by: "Bob C. " Try: http://www.periheliondesign.com/ Eric Jones' website . . . I'm sure he can help you . . . no connection with Eric but I've purchased some things from him . . . he seems pretty knowledgeable. Good Luck, Bob On 7/16/05, Lmar wrote: > > --> Avionics-List message posted by: Lmar > > Hi all, > > I have a Stratomaster engine insturment that advise to use a "transorb" > between the poositive and negative after the fuse and prior to the > insturment in order to absorb transiet high voltage. I have not been able to > find a "transorb". Do we in the USA call it by another name? > > Electronically challenged, > > Larry > > > --------------------------------- > > ________________________________ Message 4 _____________________________________ Time: 11:11:52 PM PST US From: NYTerminat@aol.com Subject: Re: Avionics-List: Transorb? --> Avionics-List message posted by: NYTerminat@aol.com Larry Look at Stratomaster Website or Sport Flying Shop, they sell the transorb for $6.00. It looks like a diode. Bob Spudis CH701, 912S