RE: [Repeater-Builder] Re: GE Mastr Pro
They were very good and still are! However, I could not give mine away. I just took 3 stations and a few extra Rx and Tx strips to the dump. They are history now. Fred W5VAY _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Pointman Sent: Tuesday, July 13, 2010 6:15 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: GE Mastr Pro i agree...I have at least 6 of them on UHFeither on the ham bands or business radio...they still work great! de KM3W _ From: skipp025 skipp...@yahoo.com To: Repeater-Builder@yahoogroups.com Sent: Tue, July 13, 2010 4:52:38 PM Subject: [Repeater-Builder] Re: GE Mastr Pro Todd todda...@... wrote: Does anyone have any info on moving a GE Mastr Pro repeater from VHF commercial to VHF Amateur? I am curious whether anyone has done it, would it be worth it before I end up parting them out for scrap. I also have about a dozen of the Mastr mobile of the era as well. Todd AE7V Hold that Tiger! Don't scrap the radio if you can help it. Sure the GE Master Pro will pretty much dial right down onto the ham bands with only readjustment and a capacitor or two change in the receiver crystal injection stages. And the Master Pro Receiver works just killer (great) and will still hold its own in rugged location service. s.
[Repeater-Builder] Re: GE Mastr Pro
I have done it many years ago. As I recall they take minimum work to use on VHF freqs, but I would go with a later series of GE equipment. Sid. --- In Repeater-Builder@yahoogroups.com, Todd todda...@... wrote: Does anyone have any info on moving a GE Mastr Pro repeater from VHF commercial to VHF Amateur? I am curious whether anyone has done it, would it be worth it before I end up parting them out for scrap. I also have about a dozen of the Mastr mobile of the era as well. Todd AE7V
[Repeater-Builder] Re: GE Mastr Pro
Todd todda...@... wrote: Does anyone have any info on moving a GE Mastr Pro repeater from VHF commercial to VHF Amateur? I am curious whether anyone has done it, would it be worth it before I end up parting them out for scrap. I also have about a dozen of the Mastr mobile of the era as well. Todd AE7V Hold that Tiger! Don't scrap the radio if you can help it. Sure the GE Master Pro will pretty much dial right down onto the ham bands with only readjustment and a capacitor or two change in the receiver crystal injection stages. And the Master Pro Receiver works just killer (great) and will still hold its own in rugged location service. s.
Re: [Repeater-Builder] Re: GE Mastr Pro
i agree...I have at least 6 of them on UHFeither on the ham bands or business radio...they still work great! de KM3W From: skipp025 skipp...@yahoo.com To: Repeater-Builder@yahoogroups.com Sent: Tue, July 13, 2010 4:52:38 PM Subject: [Repeater-Builder] Re: GE Mastr Pro Todd todda...@... wrote: Does anyone have any info on moving a GE Mastr Pro repeater from VHF commercial to VHF Amateur? I am curious whether anyone has done it, would it be worth it before I end up parting them out for scrap. I also have about a dozen of the Mastr mobile of the era as well. Todd AE7V Hold that Tiger! Don't scrap the radio if you can help it. Sure the GE Master Pro will pretty much dial right down onto the ham bands with only readjustment and a capacitor or two change in the receiver crystal injection stages. And the Master Pro Receiver works just killer (great) and will still hold its own in rugged location service. s.
Re: [Repeater-Builder] Re: GE Mastr PRO deskmate power supply question.
I would have paid good money to see the look on your face. Charles Miller - Original Message - From: Coy Hilton [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Friday, April 22, 2005 8:58 PM Subject: [Repeater-Builder] Re: GE Mastr PRO deskmate power supply question. Be very careful, NEVER EVER plug in a GE meter backword into a MASTR Pro and key the transmitter. The meter that our shop had, had the key pins broken offit's easy to do. That thing will knock your pants off. It's okay though, you'll need to change them any how. Yes ... it happened to me. 73 AC0Y Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: GE Mastr PRO deskmate power supply question.
Reminds me of the Tremors - Wooden Roller Coaster at the Silverwood Amusement Park over in Idaho. When you get off the roller coaster, there's a sign that says The Gift Shop Sells Clean Underwear (and they really do, too, with the Tremors logo on it.) I've certainly had to wait to ride a few times while the crew did some cleanup due to someone wetting their pants. Maybe there should be some GE logo underwear for situations like this?! LJ Original Message: - From: Charles Miller [EMAIL PROTECTED] Date: Fri, 22 Apr 2005 21:05:28 -0500 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: GE Mastr PRO deskmate power supply question. I would have paid good money to see the look on your face. Charles Miller - Original Message - From: Coy Hilton [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Friday, April 22, 2005 8:58 PM Subject: [Repeater-Builder] Re: GE Mastr PRO deskmate power supply question. Be very careful, NEVER EVER plug in a GE meter backword into a MASTR Pro and key the transmitter. The meter that our shop had, had the key pins broken offit's easy to do. That thing will knock your pants off. It's okay though, you'll need to change them any how. Yes ... it happened to me. 73 AC0Y Yahoo! Groups Links mail2web - Check your email from the web at http://mail2web.com/ . Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: GE Mastr PRO deskmate power supply question.
Hi Dennis, Everything you need is right on the top row of screw connections (plus a number of things you don't need). I labeled all the connections on the top with a fine point sharpie marker. There is a small 600 ohm (telephone) line driver board option, which most often lives on the chassis where supplied... many people use it for the controller receive audio source [it can supply sub tone filtered (PL, CG or CTCSS) de-emph and gated receiver audio to the external controller] when properly terminated to a resistor. If you don't have the line driver board, you end up using the (terminated) speaker audio or ungated - unfiltered discriminator audio. COS is available on the screw terminals... be carefull as the AC Mains screws are nearby. You should add some type of safe shield or cover over the AC Mains (mains makes you think I'm from England/Europe... eh?) unless you're really carefull and trust yourself near exposed ac contacts. TX Audio is a bit tricky, there is a diode switch in the tx audio path that needs a resistor to + positive voltage to turn it on (bias). The answer is just a resistor from the 10 or 12 volt supply to the proper mic-hi terminal connection... it's been more than 5 min so I'd have to go find a Master Pro in the way back... to tell you the exact resistor value connection I used. If you don't make the mentioned resistor/bias connection, the tx line in audio will sound distorted. A small fan moving light air over the power supply back side will make the filter capacitors much happier as they live near some very hot bleeder resistors. Good luck, enjoy the Master Pro and pray you're not paying the electric bill. cheers, skipp skipp025 at yahoo.com www.radiowrench.com Dennis Adams [EMAIL PROTECTED] wrote: Greetings, I have a GE Mastr Pro Deskmate with the 4EP38A10 Power Supply. The question I have... are the barrier strips at the top the same pinouts for the TX/RX strips as the 4EP38A12 power supply? I have the 4EP38A12 Schematic. I am wanting to hookup a controller and wanted to make sure I have the COS, audio, PTT, etc correct for wiring. Better yet if someone has a schematic for this unit that would also detail the barrier strip designations, please contatct me. I will pay for a schematic of this power supply. Thanks, Dennis / KB8YGC Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: GE Mastr PRO deskmate power supply question.
Thanks for the fast replies! I will have to see what I can find on that resistor for the mic hi connection. Dennis --- In Repeater-Builder@yahoogroups.com, skipp025 [EMAIL PROTECTED] wrote: Hi Dennis, Everything you need is right on the top row of screw connections (plus a number of things you don't need). I labeled all the connections on the top with a fine point sharpie marker. There is a small 600 ohm (telephone) line driver board option, which most often lives on the chassis where supplied... many people use it for the controller receive audio source [it can supply sub tone filtered (PL, CG or CTCSS) de-emph and gated receiver audio to the external controller] when properly terminated to a resistor. If you don't have the line driver board, you end up using the (terminated) speaker audio or ungated - unfiltered discriminator audio. COS is available on the screw terminals... be carefull as the AC Mains screws are nearby. You should add some type of safe shield or cover over the AC Mains (mains makes you think I'm from England/Europe... eh?) unless you're really carefull and trust yourself near exposed ac contacts. TX Audio is a bit tricky, there is a diode switch in the tx audio path that needs a resistor to + positive voltage to turn it on (bias). The answer is just a resistor from the 10 or 12 volt supply to the proper mic-hi terminal connection... it's been more than 5 min so I'd have to go find a Master Pro in the way back... to tell you the exact resistor value connection I used. If you don't make the mentioned resistor/bias connection, the tx line in audio will sound distorted. A small fan moving light air over the power supply back side will make the filter capacitors much happier as they live near some very hot bleeder resistors. Good luck, enjoy the Master Pro and pray you're not paying the electric bill. cheers, skipp skipp025 at yahoo.com www.radiowrench.com Dennis Adams [EMAIL PROTECTED] wrote: Greetings, I have a GE Mastr Pro Deskmate with the 4EP38A10 Power Supply. The question I have... are the barrier strips at the top the same pinouts for the TX/RX strips as the 4EP38A12 power supply? I have the 4EP38A12 Schematic. I am wanting to hookup a controller and wanted to make sure I have the COS, audio, PTT, etc correct for wiring. Better yet if someone has a schematic for this unit that would also detail the barrier strip designations, please contatct me. I will pay for a schematic of this power supply. Thanks, Dennis / KB8YGC Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: GE Mastr PRO deskmate power supply question.
Thanks for the fast replies! I will have to see what I can find on that resistor for the mic hi connection. Dennis --- In Repeater-Builder@yahoogroups.com, skipp025 [EMAIL PROTECTED] wrote: Hi Dennis, Everything you need is right on the top row of screw connections (plus a number of things you don't need). I labeled all the connections on the top with a fine point sharpie marker. There is a small 600 ohm (telephone) line driver board option, which most often lives on the chassis where supplied... many people use it for the controller receive audio source [it can supply sub tone filtered (PL, CG or CTCSS) de-emph and gated receiver audio to the external controller] when properly terminated to a resistor. If you don't have the line driver board, you end up using the (terminated) speaker audio or ungated - unfiltered discriminator audio. COS is available on the screw terminals... be carefull as the AC Mains screws are nearby. You should add some type of safe shield or cover over the AC Mains (mains makes you think I'm from England/Europe... eh?) unless you're really carefull and trust yourself near exposed ac contacts. TX Audio is a bit tricky, there is a diode switch in the tx audio path that needs a resistor to + positive voltage to turn it on (bias). The answer is just a resistor from the 10 or 12 volt supply to the proper mic-hi terminal connection... it's been more than 5 min so I'd have to go find a Master Pro in the way back... to tell you the exact resistor value connection I used. If you don't make the mentioned resistor/bias connection, the tx line in audio will sound distorted. A small fan moving light air over the power supply back side will make the filter capacitors much happier as they live near some very hot bleeder resistors. Good luck, enjoy the Master Pro and pray you're not paying the electric bill. cheers, skipp skipp025 at yahoo.com www.radiowrench.com Dennis Adams [EMAIL PROTECTED] wrote: Greetings, I have a GE Mastr Pro Deskmate with the 4EP38A10 Power Supply. The question I have... are the barrier strips at the top the same pinouts for the TX/RX strips as the 4EP38A12 power supply? I have the 4EP38A12 Schematic. I am wanting to hookup a controller and wanted to make sure I have the COS, audio, PTT, etc correct for wiring. Better yet if someone has a schematic for this unit that would also detail the barrier strip designations, please contatct me. I will pay for a schematic of this power supply. Thanks, Dennis / KB8YGC Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: GE Mastr PRO deskmate power supply question.
The forward bias mic diode switch was not well covered in the manual (how to deal with it). I found it after scratching my head over the distored repeater audio through the tx-af external input. The resistor was just a logical choice to forward bias the diode with enough current. The reason for the switch (if I can remember) is to keep the mic from going live during an external line input ptt... or the converse. chow for now... skipp Dennis Adams [EMAIL PROTECTED] wrote: Thanks for the fast replies! I will have to see what I can find on that resistor for the mic hi connection. Dennis --- In Repeater-Builder@yahoogroups.com, skipp025 [EMAIL PROTECTED] wrote: Hi Dennis, Everything you need is right on the top row of screw connections (plus a number of things you don't need). I labeled all the connections on the top with a fine point sharpie marker. There is a small 600 ohm (telephone) line driver board option, which most often lives on the chassis where supplied... many people use it for the controller receive audio source [it can supply sub tone filtered (PL, CG or CTCSS) de-emph and gated receiver audio to the external controller] when properly terminated to a resistor. If you don't have the line driver board, you end up using the (terminated) speaker audio or ungated - unfiltered discriminator audio. COS is available on the screw terminals... be carefull as the AC Mains screws are nearby. You should add some type of safe shield or cover over the AC Mains (mains makes you think I'm from England/Europe... eh?) unless you're really carefull and trust yourself near exposed ac contacts. TX Audio is a bit tricky, there is a diode switch in the tx audio path that needs a resistor to + positive voltage to turn it on (bias). The answer is just a resistor from the 10 or 12 volt supply to the proper mic-hi terminal connection... it's been more than 5 min so I'd have to go find a Master Pro in the way back... to tell you the exact resistor value connection I used. If you don't make the mentioned resistor/bias connection, the tx line in audio will sound distorted. A small fan moving light air over the power supply back side will make the filter capacitors much happier as they live near some very hot bleeder resistors. Good luck, enjoy the Master Pro and pray you're not paying the electric bill. cheers, skipp skipp025 at yahoo.com www.radiowrench.com Dennis Adams [EMAIL PROTECTED] wrote: Greetings, I have a GE Mastr Pro Deskmate with the 4EP38A10 Power Supply. The question I have... are the barrier strips at the top the same pinouts for the TX/RX strips as the 4EP38A12 power supply? I have the 4EP38A12 Schematic. I am wanting to hookup a controller and wanted to make sure I have the COS, audio, PTT, etc correct for wiring. Better yet if someone has a schematic for this unit that would also detail the barrier strip designations, please contatct me. I will pay for a schematic of this power supply. Thanks, Dennis / KB8YGC Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: GE Mastr pro deskmate
Sorry about that I forgot. Model ET 58A I am not all that familiar with the mastr pro series and just picked this one up last weekend and wanted to convert to UHF. Thanks! Dennis --- In Repeater-Builder@yahoogroups.com, Neil McKie [EMAIL PROTECTED] wrote: Best thig to do when requesting information as you are is to determine all the model numbers on the cabinet then the model numbers on each chassis you are planning to use etc. Numbers such as ER42 ... or ET58 ... and include all the letters/digits too. Just making a general request about a Mastr-Pro like trying to order a water pump from an auto parts place without telling them what year / model of the vehicle. Neil - WA6KLA Dennis Adams wrote: Greetings, Anyone know where I can find a service manual for this repeater? I am also looking for TX/RX strips for UHF operation. Can anyone point me in the right direction? Thanks in advance, Dennis, KB8YGC Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: GE Mastr pro deskmate
Well, the first thing you have to do is determine what frequency band it is on to begin with? If it is on 49.56 MHz, it will be a very long and difficult pull to get it to UHF. This is the reason I asked for model (chassis) numbers. Without the numbers, I won't be able to assist you more. Of course you could provide pictures, but will still need the model numbers. I have numerous pieces/parts of Mastr-Pro here ... on various frequencies - but all have model (chassis) numbers. Neil - WA6KLA Dennis Adams wrote: Sorry about that I forgot. Model ET 58A I am not all that familiar with the mastr pro series and just picked this one up last weekend and wanted to convert to UHF. Thanks! Dennis --- In Repeater-Builder@yahoogroups.com, Neil McKie [EMAIL PROTECTED] wrote: Best thig to do when requesting information as you are is to determine all the model numbers on the cabinet then the model numbers on each chassis you are planning to use etc. Numbers such as ER42 ... or ET58 ... and include all the letters/digits too. Just making a general request about a Mastr-Pro like trying to order a water pump from an auto parts place without telling them what year / model of the vehicle. Neil - WA6KLA Dennis Adams wrote: Greetings, Anyone know where I can find a service manual for this repeater? I am also looking for TX/RX strips for UHF operation. Can anyone point me in the right direction? Thanks in advance, Dennis, KB8YGC Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: GE Mastr pro deskmate
Thanks Neil. I will get those model numbers later tonight. I am not sure what frequency exactly but there are strips in there but I am sure they are probably VHF 2 meters but don't quote me on that. As you can tell I am not too familiar with this GE model I am more familiar with the mastr II's but have a vast knowledge of electronics and am hoping to get this one up and running this spring. Thanks for your help thus far and I will get those model numbers ASAP! Dennis --- In Repeater-Builder@yahoogroups.com, Neil McKie [EMAIL PROTECTED] wrote: Well, the first thing you have to do is determine what frequency band it is on to begin with? If it is on 49.56 MHz, it will be a very long and difficult pull to get it to UHF. This is the reason I asked for model (chassis) numbers. Without the numbers, I won't be able to assist you more. Of course you could provide pictures, but will still need the model numbers. I have numerous pieces/parts of Mastr-Pro here ... on various frequencies - but all have model (chassis) numbers. Neil - WA6KLA Dennis Adams wrote: Sorry about that I forgot. Model ET 58A I am not all that familiar with the mastr pro series and just picked this one up last weekend and wanted to convert to UHF. Thanks! Dennis --- In Repeater-Builder@yahoogroups.com, Neil McKie [EMAIL PROTECTED] wrote: Best thig to do when requesting information as you are is to determine all the model numbers on the cabinet then the model numbers on each chassis you are planning to use etc. Numbers such as ER42 ... or ET58 ... and include all the letters/digits too. Just making a general request about a Mastr-Pro like trying to order a water pump from an auto parts place without telling them what year / model of the vehicle. Neil - WA6KLA Dennis Adams wrote: Greetings, Anyone know where I can find a service manual for this repeater? I am also looking for TX/RX strips for UHF operation. Can anyone point me in the right direction? Thanks in advance, Dennis, KB8YGC Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: GE Mastr pro deskmate
Ok, good! Neil Dennis Adams wrote: Thanks Neil. I will get those model numbers later tonight. I am not sure what frequency exactly but there are strips in there but I am sure they are probably VHF 2 meters but don't quote me on that. As you can tell I am not too familiar with this GE model I am more familiar with the mastr II's but have a vast knowledge of electronics and am hoping to get this one up and running this spring. Thanks for your help thus far and I will get those model numbers ASAP! Dennis --- In Repeater-Builder@yahoogroups.com, Neil McKie [EMAIL PROTECTED] wrote: Well, the first thing you have to do is determine what frequency band it is on to begin with? If it is on 49.56 MHz, it will be a very long and difficult pull to get it to UHF. This is the reason I asked for model (chassis) numbers. Without the numbers, I won't be able to assist you more. Of course you could provide pictures, but will still need the model numbers. I have numerous pieces/parts of Mastr-Pro here ... on various frequencies - but all have model (chassis) numbers. Neil - WA6KLA Dennis Adams wrote: Sorry about that I forgot. Model ET 58A I am not all that familiar with the mastr pro series and just picked this one up last weekend and wanted to convert to UHF. Thanks! Dennis --- In Repeater-Builder@yahoogroups.com, Neil McKie [EMAIL PROTECTED] wrote: Best thig to do when requesting information as you are is to determine all the model numbers on the cabinet then the model numbers on each chassis you are planning to use etc. Numbers such as ER42 ... or ET58 ... and include all the letters/digits too. Just making a general request about a Mastr-Pro like trying to order a water pump from an auto parts place without telling them what year / model of the vehicle. Neil - WA6KLA Dennis Adams wrote: Greetings, Anyone know where I can find a service manual for this repeater? I am also looking for TX/RX strips for UHF operation. Can anyone point me in the right direction? Thanks in advance, Dennis, KB8YGC Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
