[Repeater-Builder] Ctcss detection
Hi guys .A long time ago there was a series of post over the ctcss detection time and I am wondering if anyone can suggest which radios are the fastest on ctcss detection Thank You, Ian Wells, Kerinvale Comaudio, 361 Camboon Road.Biloela.4715 Ph 0749922449 or 0409159932 or 0749922574 www.kerinvalecomaudio.com.au
[Repeater-Builder] Motorola MSR2000
Looking for information concerning a Motorola TRN5068A squelch and audio board. Randy Bennett w4...@arrl.net WTARS Equipment Manager
Re: [Repeater-Builder] Ctcss detection
On Sat, 20 Mar 2010, kerincom wrote: Hi guys .A long time ago there was a series of post over the ctcss detection time and I am wondering if anyone can suggest which radios are the fastest on ctcss detection From what I've been able to determine, unaided by equipment, the Motorola Saber appears to enable the audio PA (speaker pops) at about the same time whether on carrier, PL, or DPL squelch. -- Kris Kirby, KE4AHR Disinformation Analyst
Re: [Repeater-Builder] Ctcss detection
I am wondering if the tait t2000 or any other radio can decode before the squelch opens .i.e. It decodes seperately to the squelch Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au ---Original Message--- From: Kris Kirby Date: 20/03/2010 7:30:27 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Ctcss detection On Sat, 20 Mar 2010, kerincom wrote: Hi guys .A long time ago there was a series of post over the ctcss detection time and I am wondering if anyone can suggest which radios are the fastest on ctcss detection From what I've been able to determine, unaided by equipment, the Motorola Saber appears to enable the audio PA (speaker pops) at about the same time whether on carrier, PL, or DPL squelch. -- Kris Kirby, KE4AHR Disinformation Analyst faint_grain.jpg
[Repeater-Builder] Re: Ctcss detection
In general, I would expect the time to vary more as a result of the CTCSS frequency as opposed to the radio model (ie. CTCSS circuitry). The time constant of the filter circuit would be longer with the lower frequency tones and shorten as the frequency increased. I guess the DC switch design could have some bearing on the overall time but I wouldn't think it would be significant. --- In Repeater-Builder@yahoogroups.com, kerincom kerin...@... wrote: Hi guys .A long time ago there was a series of post over the ctcss detection time and I am wondering if anyone can suggest which radios are the fastest on ctcss detection  Thank You, Ian Wells, Kerinvale Comaudio, 361 Camboon Road.Biloela.4715 Ph 0749922449 or 0409159932 or 0749922574 www.kerinvalecomaudio.com.au
Re: [Repeater-Builder] Ctcss detection
I am pretty sure decode speed is related to CTCSS frequency, the higher the tone frequency the faster it decodes because it takes so many cycles to trip the decoder so a 100 hz would trip twice as fast as a 50 hz signal because it would get the required number of cycles in half the time. tom Ian Wells wrote: I am wondering if the tait t2000 or any other radio can decode before the squelch opens .i.e. It decodes seperately to the squelch Thank You ,Ian Wells Kerinvale Comaudio, 361 Camboon road, Biloela.4715 Ph 0749922449 Mb 0409159932 Hm 0749922574 Fx 0749922767 www.kerinvalecomaudio.com.au http://www.kerinvalecomaudio.com.au/ /---Original Message---/ /*From:*/ Kris Kirby mailto:k...@catonic.us /*Date:*/ 20/03/2010 7:30:27 PM /*To:*/ Repeater-Builder@yahoogroups.com mailto:Repeater-Builder@yahoogroups.com /*Subject:*/ Re: [Repeater-Builder] Ctcss detection On Sat, 20 Mar 2010, kerincom wrote: Hi guys .A long time ago there was a series of post over the ctcss detection time and I am wondering if anyone can suggest which radios are the fastest on ctcss detection From what I've been able to determine, unaided by equipment, the Motorola Saber appears to enable the audio PA (speaker pops) at about the same time whether on carrier, PL, or DPL squelch. -- Kris Kirby, KE4AHR Disinformation Analyst
[Repeater-Builder] TLE1713A Amp
I am putting together a UHF repeater and have a TLE1713A on hand. I need clarification on a few things so that i don't end up with a fried amp when I power it up. What i have gleaned from various sources thus far: 1. Rated for 2 watts input max to give about 75-90 watts out. 2. Designed for 450-470 MHz but works just fine down to about 440. 3. It may be advisable to operate it at reduced voltage. 11-12V rather than 13.8V. 4. If it fails, junk it. Difficult to repair and parts are scarce. What I still am fuzzy on: 1. I am guessing that the left coax viewed with the power TB on the right is the input and the right coax is the output. Correct? 2. The power control is derived from a control voltage on the CTRL pin at the right edge. What is the voltage and current requirements? I get that connecting this up to the operating voltage turns it full on, but it looks like it may be the power for the initial driver stage by the way it is connected internally. Hence the question on the current requirement. I don't have a schematic. So my assumption could be way off. Correct me if I am wrong. 4. The M+ and M- pins. I assume this is for metering? If so, is it for current draw or output power? What type of meter would be appropriate? A generic one with x mA FS to read XX? 5. Explain the rationale for the advantages of operating it at reduced voltage. 6. What is the square connector at the upper right corner used for? 7. What is the total current draw when operating at max output for sizing my supply? Thanks, Michael Dinger W9PXZ
RE: [Repeater-Builder] Motorola MSR2000
I HAVE SOME. WILL CONTACT you later tronight -Original Message- From: slrfbennett slrfbenn...@peoplepc.com Sent: Friday, March 19, 2010 5:49 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Motorola MSR2000 Looking for information concerning a Motorola TRN5068A squelch and audio board. Randy Bennett w4...@arrl.net WTARS Equipment Manager Reply to sender | Reply to group | Reply via web post | Start a New Topic [The entire original message is not included]
Re: [Repeater-Builder] Motorola MSR2000
Randy, I believe I have a MSR2000 service manual at work. I seem to remember converting a base station to a repeater many years ago. What info are you looking for? lh On Sat, Mar 20, 2010 at 10:55 AM, Rick wb9...@sbcglobal.net wrote: I HAVE SOME. WILL CONTACT you later tronight -- From: slrfbennett slrfbenn...@peoplepc.com Sent: Friday, March 19, 2010 5:49 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Motorola MSR2000 Looking for information concerning a Motorola TRN5068A squelch and audio board. Randy Bennett w4...@arrl.net W4RFB%40arrl.net WTARS Equipment Manager Reply to sender slrfbenn...@peoplepc.com?subject=motorola+msr2000 | Reply to group repeater-buil...@yahoogroups.com?subject=motorola+msr2000 | Reply via web posthttp://groups.yahoo.com/group/Repeater-Builder/post;_ylc=X3oDMTJwNDJwcXRsBF9TAzk3MzU5NzE0BGdycElkAzEwNDE2OARncnBzcElkAzE3MDUwNjMxMDgEbXNnSWQDOTg5ODAEc2VjA2Z0cgRzbGsDcnBseQRzdGltZQMxMjY5MDY4ODc1?act=replymessageNum=98980| Start a New Topichttp://groups.yahoo.com/group/Repeater-Builder/post;_ylc=X3oDMTJkdWtoYTR2BF9TAzk3MzU5NzE0BGdycElkAzEwNDE2OARncnBzcElkAzE3MDUwNjMxMDgEc2VjA2Z0cgRzbGsDbnRwYwRzdGltZQMxMjY5MDY4ODc1 http://groups.yahoo.com/group/Repeater-Builder/message/98980;_ylc=X3oDMTM1bWdqYnVvBF9TAzk3MzU5NzE0BGdycElkAzEwNDE2OARncnBzcElkAzE3MDUwNjMxMDgEbXNnSWQDOTg5ODAEc2VjA2Z0cgRzbGsDdnRwYwRzdGltZQ [The entire original message is not included]
[Repeater-Builder] Ground Strap Installation. Best way to run it?
Hi All, I'm going to be installing a bunch of 3 copper ground strap in my ham shack. When running the strap I've read that sharp turns are bad and a minimum bend radius of 12 should be used. This is fine if I need to bend the strap in the one direction. What happens if I have a strap running horizontally nailed flat on a wall and I need to go vertically down with another strap to tied onto it making a T. This vertical strap would also be nailed flat on the wall. Wouldn't this sharp corner present a high impedance? Would it be better if the vertical downward strap be tied on top of the other strap so it starts to run horizontally, then twisted 90 degrees turned down with a 12 bend radius then twisted again so it can be nailed flat on the wall or is this unnecessary? My next question is along those lines as well. If I have a run that goes horizontally flat along a wall is it ok to cut it then run a vertical strap flat down the wall down making a basically a sharp 90? Thanks, Jesse
[Repeater-Builder] Mototrbo System Owners
Hi All, I know this may not be the place to post this but most of us repeater builders use the very beneficial repeater builder reflector to get the word out. Here is a web site we all can post system information for the new DMR Digital Mototrbo systems being built for ham radio. The web site is hosted by the Rocky Mountain Ham Radio servers. There also will have documents on the web site that will benefit system and users to answer most questions about the system and how it works. www.hamtrbo.org Sincerely, Mike Mullarkey K7PFJ 6886 Sage Ave Firestone, CO 80504 303-736-9693 k7...@skybeam.com
[Repeater-Builder] Free: Motorola Syntor X
Model T99VB+007W ID T73VBJ7204BK VHF 100 watt radio. No cables, trunk mounted transceiver only. You pay shipping. Shipping weight will be 25 pounds.
[Repeater-Builder] MCC changes
Hi all, I don't like to mix yahoo boards with business, but sometimes does help. Micro Computer Concepts, the maker of repeaters and controller, has moved to new location. The old 727 phone number is gone for do not have the old phone company in the area. Working on them giving a recording with new number, but the phone company are not to friendly except when you are paying them, hi. The new phone is 352-683-4476 in Spring Hill, Florida. New e-mail at mcc...@att.net One can still can get info at www.mccrpt.com. 73, ron, n9ee/r MCC
RE: [Repeater-Builder] Ground Strap Installation. Best way to run it?
What happens if I have a strap running horizontally nailed flat on a wall and I need to go vertically down with another strap to tied onto it making a T. This vertical strap would also be nailed flat on the wall. Wouldn't this sharp corner present a high impedance? Yes, to some degree, but with relatively wide (3+) strap, it's not that big of a problem since the strap is kept flat rather than being bent/folded back toward itself. It's when you have to make a hard 90 by folding the strap into an L that it's more of an issue (for example, if it was coming down the wall vertically and you transitioned to horizontal to run across the floor by making a hard 90, that's a worst-case scenario). If you want to improve further on the flat T, you can take two additional short pieces of strap and lay them diagonally across the inside corners of the T at a 45 degree angle, sort of converting the T into a filled triangle, fold the excess over the main strap runs, then silver-solder all of the overlaps/joints. Would it be better if the vertical downward strap be tied on top of the other strap so it starts to run horizontally, then twisted 90 degrees turned down with a 12 bend radius then twisted again so it can be nailed flat on the wall or is this unnecessary? No, I wouldn't do it that way. My next question is along those lines as well. If I have a run that goes horizontally flat along a wall is it ok to cut it then run a vertical strap flat down the wall down making a basically a sharp 90? Maybe I'm not understanding the question, but how is that different than the original question? Is the question how to transition from horizontal to vertical, but not needing to continue the horizontal run as in the case of the T? If so, then either you can make two 45's in succession, or do the same thing as I described above for the T, using a short piece of strap at a 45 degree diagonal across the L. --- Jeff WN3A
[Repeater-Builder] Re: Motorola MSR-2000 Squelch Gate Module Info
There's a copy of the schematic of the Squelch Gate Module included in my External Controller for the MSR-2000/Micor conversion available for free download off the www.radiowrench.com/sonic web page. Here's the description page only: http://www.radiowrench.com/sonic/so02004.html Here's the download only: http://www.radiowrench.com/sonic/sqlgate.zip And here's the main page url: http://www.radiowrench.com/sonic And here's a link to toenail fungus if you need that info: http://www.toenailfungus.org/ s. --- In Repeater-Builder@yahoogroups.com, slrfbennett slrfbenn...@... wrote: Looking for information concerning a Motorola TRN5068A squelch and audio board. Randy Bennett w4...@... WTARS Equipment Manager
Re: [Repeater-Builder] Ground Strap Installation. Best way to run it?
That answers it, thanks. On Sat, Mar 20, 2010 at 10:11 AM, Jeff DePolo j...@broadsci.com wrote: What happens if I have a strap running horizontally nailed flat on a wall and I need to go vertically down with another strap to tied onto it making a T. This vertical strap would also be nailed flat on the wall. Wouldn't this sharp corner present a high impedance? Yes, to some degree, but with relatively wide (3+) strap, it's not that big of a problem since the strap is kept flat rather than being bent/folded back toward itself. It's when you have to make a hard 90 by folding the strap into an L that it's more of an issue (for example, if it was coming down the wall vertically and you transitioned to horizontal to run across the floor by making a hard 90, that's a worst-case scenario). If you want to improve further on the flat T, you can take two additional short pieces of strap and lay them diagonally across the inside corners of the T at a 45 degree angle, sort of converting the T into a filled triangle, fold the excess over the main strap runs, then silver-solder all of the overlaps/joints. Would it be better if the vertical downward strap be tied on top of the other strap so it starts to run horizontally, then twisted 90 degrees turned down with a 12 bend radius then twisted again so it can be nailed flat on the wall or is this unnecessary? No, I wouldn't do it that way. My next question is along those lines as well. If I have a run that goes horizontally flat along a wall is it ok to cut it then run a vertical strap flat down the wall down making a basically a sharp 90? Maybe I'm not understanding the question, but how is that different than the original question? Is the question how to transition from horizontal to vertical, but not needing to continue the horizontal run as in the case of the T? If so, then either you can make two 45's in succession, or do the same thing as I described above for the T, using a short piece of strap at a 45 degree diagonal across the L. --- Jeff WN3A
Re: [Repeater-Builder] Ground Strap Installation. Best way to run it?
Hi Jeff Just wondering why silver? Lower impedance or higher melt temp or both? Randy VE3JPU On 2010-03-20, at 1:39 PM, Jesse Lloyd wrote: That answers it, thanks. On Sat, Mar 20, 2010 at 10:11 AM, Jeff DePolo j...@broadsci.com wrote: What happens if I have a strap running horizontally nailed flat on a wall and I need to go vertically down with another strap to tied onto it making a T. This vertical strap would also be nailed flat on the wall. Wouldn't this sharp corner present a high impedance? Yes, to some degree, but with relatively wide (3+) strap, it's not that big of a problem since the strap is kept flat rather than being bent/folded back toward itself. It's when you have to make a hard 90 by folding the strap into an L that it's more of an issue (for example, if it was coming down the wall vertically and you transitioned to horizontal to run across the floor by making a hard 90, that's a worst-case scenario). If you want to improve further on the flat T, you can take two additional short pieces of strap and lay them diagonally across the inside corners of the T at a 45 degree angle, sort of converting the T into a filled triangle, fold the excess over the main strap runs, then silver-solder all of the overlaps/joints. Would it be better if the vertical downward strap be tied on top of the other strap so it starts to run horizontally, then twisted 90 degrees turned down with a 12 bend radius then twisted again so it can be nailed flat on the wall or is this unnecessary? No, I wouldn't do it that way. My next question is along those lines as well. If I have a run that goes horizontally flat along a wall is it ok to cut it then run a vertical strap flat down the wall down making a basically a sharp 90? Maybe I'm not understanding the question, but how is that different than the original question? Is the question how to transition from horizontal to vertical, but not needing to continue the horizontal run as in the case of the T? If so, then either you can make two 45's in succession, or do the same thing as I described above for the T, using a short piece of strap at a 45 degree diagonal across the L. --- Jeff WN3A
Re: [Repeater-Builder] Ground Strap Installation. Best way to run it?
Hi Jeff should have read silver solder. On 2010-03-20, at 1:46 PM, Randy Elliott wrote: Hi Jeff Just wondering why silver? Lower impedance or higher melt temp or both? Randy VE3JPU On 2010-03-20, at 1:39 PM, Jesse Lloyd wrote: That answers it, thanks. On Sat, Mar 20, 2010 at 10:11 AM, Jeff DePolo j...@broadsci.com wrote: What happens if I have a strap running horizontally nailed flat on a wall and I need to go vertically down with another strap to tied onto it making a T. This vertical strap would also be nailed flat on the wall. Wouldn't this sharp corner present a high impedance? Yes, to some degree, but with relatively wide (3+) strap, it's not that big of a problem since the strap is kept flat rather than being bent/folded back toward itself. It's when you have to make a hard 90 by folding the strap into an L that it's more of an issue (for example, if it was coming down the wall vertically and you transitioned to horizontal to run across the floor by making a hard 90, that's a worst-case scenario). If you want to improve further on the flat T, you can take two additional short pieces of strap and lay them diagonally across the inside corners of the T at a 45 degree angle, sort of converting the T into a filled triangle, fold the excess over the main strap runs, then silver-solder all of the overlaps/joints. Would it be better if the vertical downward strap be tied on top of the other strap so it starts to run horizontally, then twisted 90 degrees turned down with a 12 bend radius then twisted again so it can be nailed flat on the wall or is this unnecessary? No, I wouldn't do it that way. My next question is along those lines as well. If I have a run that goes horizontally flat along a wall is it ok to cut it then run a vertical strap flat down the wall down making a basically a sharp 90? Maybe I'm not understanding the question, but how is that different than the original question? Is the question how to transition from horizontal to vertical, but not needing to continue the horizontal run as in the case of the T? If so, then either you can make two 45's in succession, or do the same thing as I described above for the T, using a short piece of strap at a 45 degree diagonal across the L. --- Jeff WN3A
RE: [Repeater-Builder] Ground Strap Installation. Best way to run it?
Hi Jeff Just wondering why silver? Lower impedance or higher melt temp or both? Strength and melting point. Note that silver soldering isn't soldering using soft solder that has some silver in it, such as tin+silver or tin+silver+copper. Those kinds of soft solder are often called silver bearing solder. Silver soldering is really a kind of brazing. For silver soldering (brazing) copper strap, sil-phos brazing rods are often used (sil-phos = silver + phosphorus, the balance of the composition being copper). --- Jeff WN3A
Re: [Repeater-Builder] Ground Strap Installation. Best way to run it?
Thanks Jeff I have just learned something new today. So you would need an acetylene torch to provide enough heat for doing this. Randy On 2010-03-20, at 2:04 PM, Jeff DePolo wrote: Hi Jeff Just wondering why silver? Lower impedance or higher melt temp or both? Strength and melting point. Note that silver soldering isn't soldering using soft solder that has some silver in it, such as tin+silver or tin+silver+copper. Those kinds of soft solder are often called silver bearing solder. Silver soldering is really a kind of brazing. For silver soldering (brazing) copper strap, sil-phos brazing rods are often used (sil-phos = silver + phosphorus, the balance of the composition being copper). --- Jeff WN3A
[Repeater-Builder] Re: OT: Programming Icom IC-U810T
I can't find anything about it on the Icom dealers' web site, either. Can you tell me anything else about the radio? Jeff W6JK --- In Repeater-Builder@yahoogroups.com, Eric M. va3...@... wrote: I have come across an Icom IC-U810T LTR trunking radio and I haven't been able to find any info on how to program it. If anyone has any info on this, please email me off list. Thanks, Eric.
RE: [Repeater-Builder] Motorola MSR2000
Randy, I have sent the info you requested, off the list. Others who desire information regarding MSR2000 modules and accessories, please be advised that the MSR2000 Control and Audio Manual 6881061E40 is still available from Motorola Parts, for about $60- a true bargain, considering its size (1.5 thick) and the amount of data it contains. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of slrfbennett Sent: Friday, March 19, 2010 3:49 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Motorola MSR2000 Looking for information concerning a Motorola TRN5068A squelch and audio board. Randy Bennett w4...@arrl.net mailto:W4RFB%40arrl.net WTARS Equipment Manager
RE: [Repeater-Builder] Ground Strap Installation. Best way to run it?
Mmmm...for 3 strap, it will likely depend on the thickness. You might be able to get by with a MAPP gas torch. I can do small wire (12 AWG typically, for ground radials) to 3 copper strap just using MAPP gas no problem, but if I'm doing anything heavier, I do oxyacetylene. I like 15% sil-phos (Harris Stay-Silv 15 is what I usually get) - no fluxing, good flow. Disclaimer - I'm not a welder, plumber, HVAC tech, etc.. I don't weld/braze on a daily basis; I'm just passing along what I know and what I've learned via reading, but even moreso, from my enrollment in the school of hard knocks. --- Jeff WN3A -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Randy Elliott Sent: Saturday, March 20, 2010 2:32 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Ground Strap Installation. Best way to run it? Thanks Jeff I have just learned something new today. So you would need an acetylene torch to provide enough heat for doing this. Randy On 2010-03-20, at 2:04 PM, Jeff DePolo wrote: Hi Jeff Just wondering why silver? Lower impedance or higher melt temp or both? Strength and melting point. Note that silver soldering isn't soldering using soft solder that has some silver in it, such as tin+silver or tin+silver+copper. Those kinds of soft solder are often called silver bearing solder. Silver soldering is really a kind of brazing. For silver soldering (brazing) copper strap, sil-phos brazing rods are often used (sil-phos = silver + phosphorus, the balance of the composition being copper). --- Jeff WN3A No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.733 / Virus Database: 271.1.1/2748 - Release Date: 03/20/10 03:33:00
Re: [Repeater-Builder] Ground Strap Installation. Best way to run it?
Hi Jeff I always put more into the school of hard knocks had to say than what any wall paper would say. Thanks Randy On 2010-03-20, at 5:05 PM, Jeff DePolo wrote: Mmmm...for 3 strap, it will likely depend on the thickness. You might be able to get by with a MAPP gas torch. I can do small wire (12 AWG typically, for ground radials) to 3 copper strap just using MAPP gas no problem, but if I'm doing anything heavier, I do oxyacetylene. I like 15% sil-phos (Harris Stay-Silv 15 is what I usually get) - no fluxing, good flow. Disclaimer - I'm not a welder, plumber, HVAC tech, etc.. I don't weld/braze on a daily basis; I'm just passing along what I know and what I've learned via reading, but even moreso, from my enrollment in the school of hard knocks. --- Jeff WN3A -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Randy Elliott Sent: Saturday, March 20, 2010 2:32 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Ground Strap Installation. Best way to run it? Thanks Jeff I have just learned something new today. So you would need an acetylene torch to provide enough heat for doing this. Randy On 2010-03-20, at 2:04 PM, Jeff DePolo wrote: Hi Jeff Just wondering why silver? Lower impedance or higher melt temp or both? Strength and melting point. Note that silver soldering isn't soldering using soft solder that has some silver in it, such as tin+silver or tin+silver+copper. Those kinds of soft solder are often called silver bearing solder. Silver soldering is really a kind of brazing. For silver soldering (brazing) copper strap, sil-phos brazing rods are often used (sil-phos = silver + phosphorus, the balance of the composition being copper). --- Jeff WN3A No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.733 / Virus Database: 271.1.1/2748 - Release Date: 03/20/10 03:33:00
[Repeater-Builder] RF Fuses
Any ideas where I can buy RF fuses, either the actual fuse element or the combination holder/fuse say in a BNC configuration, to portect the input of a spectrum analyzer or service monitor? Dave WB2FTX
RE: [Repeater-Builder] RF Fuses
Dave, There's nothing special about a fuse to protect test equipment from accidental application of RF. My General Dynamics (Motorola) R2600D uses 1/16 ampere axial fuses behind the antenna and generate BNC connectors, and these are easily replaceable from the front in less than a minute. (Yeah, I made a boo-boo with a mobile radio hooked up wrong, but the fuse did its job and protected the instrument.) I don't know who makes these special connectors, but perhaps you could buy them from GD or Aeroflex and retrofit them to your own equipment. The connectors are designed so that the 50 ohm impedance is maintained when the fuse is in place. The fuses are about the size of a grain of rice. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Dave Sent: Saturday, March 20, 2010 3:37 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] RF Fuses Any ideas where I can buy RF fuses, either the actual fuse element or the combination holder/fuse say in a BNC configuration, to portect the input of a spectrum analyzer or service monitor? Dave WB2FTX
[Repeater-Builder] Re: RF Fuses
Anritsu Accessory: MP612A and MP613A (fuse and fuse holder) -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Dave Sent: Saturday, March 20, 2010 3:37 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] RF Fuses Any ideas where I can buy RF fuses, either the actual fuse element or the combination holder/fuse say in a BNC configuration, to portect the input of a spectrum analyzer or service monitor? Dave WB2FTX
Re: [Repeater-Builder] RF Fuses
If I remember correctly, Cushman had a box that went in front of their communications monitors. This was a small cast metal box with BNC connectors attached. Inside was a small pigtail fuse between the connectors. The fuse was rated at 1/32 Amp. 73 Glenn WB4UIV At 06:36 PM 3/20/2010, you wrote: Any ideas where I can buy RF fuses, either the actual fuse element or the combination holder/fuse say in a BNC configuration, to portect the input of a spectrum analyzer or service monitor? Dave WB2FTX Yahoo! Groups Links
Re: [Repeater-Builder] Re: OT: Programming Icom IC-U810T
Hope this helps Jeff. - 20 systems - 10 groups - programmed for LTR or Americom operation - capable of over the air programming with Americom - xmit 806 - 821 mhz - rx 851 - 866 mhz - 15w out, 10w on talk around Eric. Jeff wrote: I can't find anything about it on the Icom dealers' web site, either. Can you tell me anything else about the radio? Jeff W6JK --- In Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com, Eric M. va3...@... wrote: I have come across an Icom IC-U810T LTR trunking radio and I haven't been able to find any info on how to program it. If anyone has any info on this, please email me off list. Thanks, Eric.
