[Repeater-Builder] Re: Poor Repeater RX
Alexander, Motorola makes a preamp for their T43-T83 Mitreks that is inserted after some filtering on the front end. May be a better way to implement a rx preamp in your setup, and they're pretty cheap, bought a few recently for $25/each. Also, I agree with Glenn that separating the Mitrek decks into separate receive and transmit rather than doing the duplex mod is a much better approach for 2M on the Mitrek. John/N4SJW --- In Repeater-Builder@yahoogroups.com, Alexander Tubonjic [EMAIL PROTECTED] wrote: Hello, Well here is one that cant be figured out locally, thought I would throw it to the experts. My high school radio club has recently made a few upgrades to our VHF repeater. We replaced the Ringo Ranger antenna with a Comet GP-9 Antenna, replaced the 9913 coax with Andrews 1/2'' Heliax, and put a Mirage Pream inline. The problem we are having is mainly with the preamp (I think) I will describe the setup and give all the specs first. The repeater Rx and Tx is from a 110 Watt Motorola Mitrek power out from the Mitrek is 50 watts. The power supply is an Astron RS-70M, Duplexer is a Sinclair Q202G (yes, it is properly tuned and working as it should) the antenna is rooftop on the schools theater building (the roof is about 75 feet AGL and the antenna is on an 8' mast pipe) there are no obstructions for at least 5 miles around. The preamp setup is as follows, it is after the duplexers and before the reciever. We have the preamp directly connected into the duplexer and a jumper going from the preamp to the Rx bulkhead on the repeater cabinet. The preamp has two settings, a higher gain and a lower gain setting, initially we had it setup to the higher gain setting but I went up today and switched over to lower gain and turned the power output to 30 watts. The problem we have is the Rx is not what is should be. It is a tad worse then when we were running the repeater at 15 watts without the Preamp. I would really like to get the preamp to work like it should in the repeater system, I just dont have any ideas on what to do next to get better sensitivity on the machine. Any thoughts and ideas would be appreciated. Thanks. Alexander KG4OGN P.s, all jumpers are made with double shielded ridgid coax, so thats not the cause of the problem. 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: RB Antennas
Shamless plug. I have amateur quality single band fiberglass antennas of the TRAM brand. Check out my site. Art KC7GFhttp://www.kartronicsonline.com/PowerPoles, Antennas, Mounts, Connectors, Adapters, CoaxGolden, CO 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 the Yahoo! Terms of Service.
Re: [Repeater-Builder] Re: Poor Repeater RX
Where did you buy the Mitrek rx preamp? - Original Message - From: johnmichaelwelton [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Saturday, May 21, 2005 9:23 AM Subject: [Repeater-Builder] Re: Poor Repeater RX Alexander, Motorola makes a preamp for their T43-T83 Mitreks that is inserted after some filtering on the front end. May be a better way to implement a rx preamp in your setup, and they're pretty cheap, bought a few recently for $25/each. Also, I agree with Glenn that separating the Mitrek decks into separate receive and transmit rather than doing the duplex mod is a much better approach for 2M on the Mitrek. John/N4SJW --- In Repeater-Builder@yahoogroups.com, Alexander Tubonjic [EMAIL PROTECTED] wrote: Hello, Well here is one that cant be figured out locally, thought I would throw it to the experts. My high school radio club has recently made a few upgrades to our VHF repeater. We replaced the Ringo Ranger antenna with a Comet GP-9 Antenna, replaced the 9913 coax with Andrews 1/2'' Heliax, and put a Mirage Pream inline. The problem we are having is mainly with the preamp (I think) I will describe the setup and give all the specs first. The repeater Rx and Tx is from a 110 Watt Motorola Mitrek power out from the Mitrek is 50 watts. The power supply is an Astron RS-70M, Duplexer is a Sinclair Q202G (yes, it is properly tuned and working as it should) the antenna is rooftop on the schools theater building (the roof is about 75 feet AGL and the antenna is on an 8' mast pipe) there are no obstructions for at least 5 miles around. The preamp setup is as follows, it is after the duplexers and before the reciever. We have the preamp directly connected into the duplexer and a jumper going from the preamp to the Rx bulkhead on the repeater cabinet. The preamp has two settings, a higher gain and a lower gain setting, initially we had it setup to the higher gain setting but I went up today and switched over to lower gain and turned the power output to 30 watts. The problem we have is the Rx is not what is should be. It is a tad worse then when we were running the repeater at 15 watts without the Preamp. I would really like to get the preamp to work like it should in the repeater system, I just dont have any ideas on what to do next to get better sensitivity on the machine. Any thoughts and ideas would be appreciated. Thanks. Alexander KG4OGN P.s, all jumpers are made with double shielded ridgid coax, so thats not the cause of the problem. Yahoo! Groups Links _ This message scanned for viruses by CoreComm 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: Poor Repeater RX
Probably any used commercial vendor will have them. I mostly use Bob Parker, he took over from Bud Wolfe. See the repeater builders web page for a list of vendors: http://www.repeater-builder.com/rbtip/supplyindex.html John/N4SJW --- In Repeater-Builder@yahoogroups.com, Al [EMAIL PROTECTED] wrote: Where did you buy the Mitrek rx preamp? - Original Message - From: johnmichaelwelton [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Saturday, May 21, 2005 9:23 AM Subject: [Repeater-Builder] Re: Poor Repeater RX Alexander, Motorola makes a preamp for their T43-T83 Mitreks that is inserted after some filtering on the front end. May be a better way to implement a rx preamp in your setup, and they're pretty cheap, bought a few recently for $25/each. Also, I agree with Glenn that separating the Mitrek decks into separate receive and transmit rather than doing the duplex mod is a much better approach for 2M on the Mitrek. John/N4SJW --- In Repeater-Builder@yahoogroups.com, Alexander Tubonjic [EMAIL PROTECTED] wrote: Hello, Well here is one that cant be figured out locally, thought I would throw it to the experts. My high school radio club has recently made a few upgrades to our VHF repeater. We replaced the Ringo Ranger antenna with a Comet GP-9 Antenna, replaced the 9913 coax with Andrews 1/2'' Heliax, and put a Mirage Pream inline. The problem we are having is mainly with the preamp (I think) I will describe the setup and give all the specs first. The repeater Rx and Tx is from a 110 Watt Motorola Mitrek power out from the Mitrek is 50 watts. The power supply is an Astron RS-70M, Duplexer is a Sinclair Q202G (yes, it is properly tuned and working as it should) the antenna is rooftop on the schools theater building (the roof is about 75 feet AGL and the antenna is on an 8' mast pipe) there are no obstructions for at least 5 miles around. The preamp setup is as follows, it is after the duplexers and before the reciever. We have the preamp directly connected into the duplexer and a jumper going from the preamp to the Rx bulkhead on the repeater cabinet. The preamp has two settings, a higher gain and a lower gain setting, initially we had it setup to the higher gain setting but I went up today and switched over to lower gain and turned the power output to 30 watts. The problem we have is the Rx is not what is should be. It is a tad worse then when we were running the repeater at 15 watts without the Preamp. I would really like to get the preamp to work like it should in the repeater system, I just dont have any ideas on what to do next to get better sensitivity on the machine. Any thoughts and ideas would be appreciated. Thanks. Alexander KG4OGN P.s, all jumpers are made with double shielded ridgid coax, so thats not the cause of the problem. Yahoo! Groups Links _ This message scanned for viruses by CoreComm 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: Poor Repeater RX
Thanks for all the replies, lets see. We cant afford to get another duplexer or another antenna, what we have stays. The SWR on the antenna is about 1.3:1/1.4:1 Regarding the dual Mitreks, the repeater was working fairly well before, I was just wanting to get the preamp to function a little better. I was talking with a friend about the setup and we are going to headup to the repeater site Monday and take the preamp out of line and see what the performance is like at that time (we installed the new antenna and preamp at the same time) so we will see what the receive is like without the preamp. Thanks again for all the replies. Alexander KG4OGN 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: Poor Repeater RX
You really should check for desense by disabling the TX while listening to a weak signal. If you have any without the preamp, you don't even want to consider adding the preamp back. You need to resolve the desense problem first. Chuck WB2EDV - Original Message - From: Alexander Tubonjic [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Saturday, May 21, 2005 2:20 PM Subject: [Repeater-Builder] Re: Poor Repeater RX Thanks for all the replies, lets see. We cant afford to get another duplexer or another antenna, what we have stays. The SWR on the antenna is about 1.3:1/1.4:1 Regarding the dual Mitreks, the repeater was working fairly well before, I was just wanting to get the preamp to function a little better. I was talking with a friend about the setup and we are going to headup to the repeater site Monday and take the preamp out of line and see what the performance is like at that time (we installed the new antenna and preamp at the same time) so we will see what the receive is like without the preamp. Thanks again for all the replies. Alexander KG4OGN 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] Mitrek PL (HLN4181 board)
OK Mike (WA6ILQ), I am reading on the repeater builder web site about the Mitrek PL (HLN4181) board. I have a 10 Meter FM remote base connected to my repeater via an RLC-3 controller. I CURRENTLY use the HLN4020 dual element PL board in my 10FM remote base am strongly considering swapping it for the reedless HLN4181 board due to the ease of changing PL. I know I could simply put a Comm-Spec board in, but using the HLN4181 saves money (since have one currently collecting dust) and it would give me reverse burst no metter what tone I am using. (Rev burst is nice because I occasionally access another remote base across the countty during band openings, and our two remotes using the same PL with rev burst is really nice!!) I could simply set the reedless board up with a couple of different tone options switch resistor networks on the fly. On the web site regarding the HLN4181 reedless board you state: There is also an audio notch filter on the board to remove the received PL tone from the received audio. However it's a pretty poor design and you don't want to try to use it in repeater service - just plan on using an external high-pass filter between the receiver and your repeater controller So, Mike, what exactly is the proble with the high-pass filter? Is is any worse that the other moto PL board high pass filters? I know I could simply pick the audio off the discriminator BEFORE the PL filter, but I don't do that. I always use a PL filter BEFORE the audio goes into my controller so the PL tone does not get repeated cause other problems. Type away!! thanks 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] Mitrek PL (HLN4181 board)
At 02:33 PM 5/21/05, JOHN MACKEY K0SSF [EMAIL PROTECTED] wrote: OK Mike (WA6ILQ), I am reading on the repeater builder web site about the Mitrek PL (HLN4181) board. I have a 10 Meter FM remote base connected to my repeater via an RLC-3 controller. I CURRENTLY use the HLN4020 dual element PL board in my 10FM remote base am strongly considering swapping it for the reedless HLN4181 board due to the ease of changing PL. I know I could simply put a Comm-Spec board in, but using the HLN4181 saves money (since have one currently collecting dust) and it would give me reverse burst no metter what tone I am using. (Rev burst is nice because I occasionally access another remote base across the countty during band openings, and our two remotes using the same PL with rev burst is really nice!!) I could simply set the reedless board up with a couple of different tone options switch resistor networks on the fly. You will need a 2-pole relay to do that - switch the two strobe pulses. On the web site regarding the HLN4181 reedless board you state: There is also an audio notch filter on the board to remove the received PL tone from the received audio. However it's a pretty poor design and you don't want to try to use it in repeater service - just plan on using an external high-pass filter between the receiver and your repeater controller So, Mike, what exactly is the proble with the Mitrek high-pass filter? It's a shunt gyrator design tuned to roughly 134hz. Picture a series LC network tuned to 134hz and shunted across the RX audio. Is is any worse that the other moto PL board high pass filters? Much worse. The Mitrek is a low-Q notch, the Micor and Motrac at least had real inductors in a true high pass / low cut filter. Go yourself a favor - grab a Micor RX PL board or a GE M2 repeat audio card (from a station shelf) and copy the highpass audio filter. I know I could simply pick the audio off the discriminator BEFORE the PL filter, but I don't do that. I always use a PL filter BEFORE the audio goes into my controller so the PL tone does not get repeated I with others would do that. cause other problems. BTW look at http://www.repeater-builder.com/mitrek/mitrek-interfacing.html#Audio_Out for more tricks on Mitrek repeat audio (the link is into the middle of a writeup on the Mitrek). Mike WA6ILQ PS - Note to John: do you think that Silke would do a writeup on the RCA-700 interfacing? 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 : Re: [Repeater-Builder] Poor Repeater RX
--- Original Message ---From: Eric Lemmon[mailto:[EMAIL PROTECTED]Sent: 5/21/2005 4:05:15 PMTo : Repeater-Builder@yahoogroups.comCc : Subject : RE : Re: [Repeater-Builder] Poor Repeater RX Alexander,TheSinclair Q-202G duplexer can barely make 85 dB when tuned on a networkanalyzer, so that's the major part of your desense problem. It's only afour-cavity duplexer, specified at 80 dB minimum isolation, so no amountof tuning is going to make it operate at an isolation above its designlimit. While I don't disagree with what has been written, please realize that *most* commercial manufacturers 'rate' their highband/2M duplexer at 500 kiloHertz split, not 600 kiloHertz where most amateur 2 meter repeaters are operated. This added frequency separation allows for the duplexer to provide more than the stated isolation at the 500 kiloHertz specification. The Wacom WP-641 is specified at 85 dB of isolation at a 500 kiloHertz split, but provides 93 dB of isolation at 600 kiloHertz. The Sinclair Q202G is similar in its factory specifications, and isolation provided. Kevin Custer 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 the Yahoo! Terms of Service.
[Repeater-Builder] Low Power VHF (Ham) Radio Required.
Hi Guys,and the Gals, I am looking for a low power radio unit, to be used for a portable VHF, Ham repeater. Power out needs only be 10 watts max, RX and TX in the one unit, easy to cahnge freq's when required, and ease of interfacing with a basic controller. I have seen and read information on the Mitreks, but concerned when reading about dropping the power down too low. However these are crystal controlled, and do not change too quickly. I did see somewhere about a "Ranger", but know nothing about this radio, and ease of conversion. :( If anyone could guide me with any information, on what to use, and obtain, I would be grateful. :)) Of course with any Ham aquiring, we wish to keep the price down as much as possible. (Upfront about it) Regards Kevin, ZL1KFM. 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 the Yahoo! Terms of Service.
Re: [Repeater-Builder] Zetron 38A connector
I may have an extra. Is this the connector that wires connect to that plugs into the Zetron? Russ On 5/21/05, Tim Billingsley [EMAIL PROTECTED] wrote: Is anyone aware of an alternate source for the 15 pin terminal strip onthe back of the Zetron 38A? I am guessing that this is probably a propritary item, but no harm in asking around.ThanksTim Billingsley, KD5CKPhttp://www.qsl.net/kd5ckp/__ Yahoo! Mail MobileTake Yahoo! Mail with you! Check email on your mobile phone.http://mobile.yahoo.com/learn/mailYahoo! 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/ 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 the Yahoo! Terms of Service.
Re: RE : Re: [Repeater-Builder] Poor Repeater RX
Don't you mean, kiloCycles? On 5/21/05, Kevin K. Custer [EMAIL PROTECTED] wrote: --- Original Message --- From : Eric Lemmon[mailto:[EMAIL PROTECTED] Sent : 5/21/2005 4:05:15 PM To : Repeater-Builder@yahoogroups.com Cc : Subject : RE : Re: [Repeater-Builder] Poor Repeater RX Alexander, The Sinclair Q-202G duplexer can barely make 85 dB when tuned on a network analyzer, so that's the major part of your desense problem. It's only a four-cavity duplexer, specified at 80 dB minimum isolation, so no amount of tuning is going to make it operate at an isolation above its design limit. While I don't disagree with what has been written, please realize that *most* commercial manufacturers 'rate' their highband/2M duplexer at 500 kiloHertz split, not 600 kiloHertz where most amateur 2 meter repeaters are operated. This added frequency separation allows for the duplexer to provide more than the stated isolation at the 500 kiloHertz specification. The Wacom WP-641 is specified at 85 dB of isolation at a 500 kiloHertz split, but provides 93 dB of isolation at 600 kiloHertz. The Sinclair Q202G is similar in its factory specifications, and isolation provided. Kevin Custer 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 the Yahoo! Terms of Service. 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: RE : Re: [Repeater-Builder] Poor Repeater RX
KiloHertz is the correct term! Richard, N7TGB -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] Behalf Of DCFluX Sent: Saturday, May 21, 2005 7:17 PM To: Repeater-Builder@yahoogroups.com Subject: Re: RE : Re: [Repeater-Builder] Poor Repeater RX Don't you mean, kiloCycles? On 5/21/05, Kevin K. Custer [EMAIL PROTECTED] wrote: --- Original Message --- From : Eric Lemmon[mailto:[EMAIL PROTECTED] Sent : 5/21/2005 4:05:15 PM To : Repeater-Builder@yahoogroups.com Cc : Subject : RE : Re: [Repeater-Builder] Poor Repeater RX Alexander, The Sinclair Q-202G duplexer can barely make 85 dB when tuned on a network analyzer, so that's the major part of your desense problem. It's only a four-cavity duplexer, specified at 80 dB minimum isolation, so no amount of tuning is going to make it operate at an isolation above its design limit. While I don't disagree with what has been written, please realize that *most* commercial manufacturers 'rate' their highband/2M duplexer at 500 kiloHertz split, not 600 kiloHertz where most amateur 2 meter repeaters are operated. This added frequency separation allows for the duplexer to provide more than the stated isolation at the 500 kiloHertz specification. The Wacom WP-641 is specified at 85 dB of isolation at a 500 kiloHertz split, but provides 93 dB of isolation at 600 kiloHertz. The Sinclair Q202G is similar in its factory specifications, and isolation provided. Kevin Custer 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 the Yahoo! Terms of Service. 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] Philips BFQ-43S
Hello all Normally I can find things on the WWW, But I have had No luck in finding a Data Sheet for the Following Transistor Philips BFQ-43SIf anyone has the Info Please E-mail Me direct [EMAIL PROTECTED] Thanks Don KA9QJG 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] Foxbat [harris]Repeater Info Needed
Greetings, All I have acquired a portable repeater made by Harris Law Enforcement Products out of Melbourne, FL. It has a Icom IC-R1 Receiver, along with a Icom IC-2SAT VHF radio. I'm looking for any info on this unit. I think the model# is: HLE-FB-2601 any info greatly appreciated!! Thanks, Mike Mike JohnsonKd4HLH 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 the Yahoo! Terms of Service.
Re: RE : Re: [Repeater-Builder] Poor Repeater RX
I've got a kiloCycle to kiloHertz conversion table you can study. On 5/21/05, Richard [EMAIL PROTECTED] wrote: KiloHertz is the correct term! Richard, N7TGB -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] Behalf Of DCFluX Sent: Saturday, May 21, 2005 7:17 PM To: Repeater-Builder@yahoogroups.com Subject: Re: RE : Re: [Repeater-Builder] Poor Repeater RX Don't you mean, kiloCycles? On 5/21/05, Kevin K. Custer [EMAIL PROTECTED] wrote: --- Original Message --- From : Eric Lemmon[mailto:[EMAIL PROTECTED] Sent : 5/21/2005 4:05:15 PM To : Repeater-Builder@yahoogroups.com Cc : Subject : RE : Re: [Repeater-Builder] Poor Repeater RX Alexander, The Sinclair Q-202G duplexer can barely make 85 dB when tuned on a network analyzer, so that's the major part of your desense problem. It's only a four-cavity duplexer, specified at 80 dB minimum isolation, so no amount of tuning is going to make it operate at an isolation above its design limit. While I don't disagree with what has been written, please realize that *most* commercial manufacturers 'rate' their highband/2M duplexer at 500 kiloHertz split, not 600 kiloHertz where most amateur 2 meter repeaters are operated. This added frequency separation allows for the duplexer to provide more than the stated isolation at the 500 kiloHertz specification. The Wacom WP-641 is specified at 85 dB of isolation at a 500 kiloHertz split, but provides 93 dB of isolation at 600 kiloHertz. The Sinclair Q202G is similar in its factory specifications, and isolation provided. Kevin Custer 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 the Yahoo! Terms of Service. 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] Low Power VHF (Ham) Radio
RANGR = one of GE's 'replacement' for the MASTR line ( $.05 answer) It is programmable; typically as 16-32 channels, sometimes 64 or more; problem being that they were 'intended' for simplex (ie PTT) ops -- single VCO, if you will. Duplex ops pretty-much means using 2 radios. Heatsink isn't especially beefy either. Overall, wouldn't be *my* choice. Then, of course -- duplexers and frequency hopping creates another set of issues... not to say there aren't solutions; (separate antennas LOTS of vertical separation...) much food for thought experimentation. ;-) ~/ RSG - N8BQN /~ Kevin Natalia wrote: I am looking for a low power radio unit, to be used for a portable VHF, Ham repeater.Power out needs only be 10 watts max, RX and TX in the one unit, easy to cahnge freq's when required, and ease of interfacing with a basic controller. I have seen and read information on the Mitreks, but concerned when reading about dropping the power down too low. However these are crystal controlled, and do not change too quickly.I did see somewhere about a Ranger, but know nothing about this radio, and ease of conversion. :( Kevin, ZL1KFM. 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] Philips BFQ-43S
Thanks to all who replied I did get the Info Data ,from A Gentleman named Jerry Thanks Don KA9QJG 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/
