[Repeater-Builder] Re: Which Micor RX for Two Meters
Do yourself a favor and send the receiver and $100 to Scott n3...@repeater-builder.com. Then you will have a receiver that is in the 131-150 range. It is worth EVERY penny. It will exceed book specs. --- In Repeater-Builder@yahoogroups.com, Tim - WD6AWP tisaw...@... wrote: I have the following Micor receivers. TLD4071B, TLD5781AV, and TLD8271B3. Unfortunately none are in range 2. Which, if any of these would be the best for a receiver on 144.5 Tim WD6AWP
Re: [Repeater-Builder] Re: Which Micor RX for Two Meters
Exactly right, Scott did the coils and castings on mine five years ago.Hasn't been touched since.now the xmitter, well that's another story. On Sun, Jun 6, 2010 at 8:36 AM, terry_wx3m wx3m.te...@gmail.com wrote: Do yourself a favor and send the receiver and $100 to Scott n3...@repeater-builder.com n3xcc%40repeater-builder.com. Then you will have a receiver that is in the 131-150 range. It is worth EVERY penny. It will exceed book specs. --- In Repeater-Builder@yahoogroups.comRepeater-Builder%40yahoogroups.com, Tim - WD6AWP tisaw...@... wrote: I have the following Micor receivers. TLD4071B, TLD5781AV, and TLD8271B3. Unfortunately none are in range 2. Which, if any of these would be the best for a receiver on 144.5 Tim WD6AWP -- Always drink upstream from the herd.
Re: [Repeater-Builder] Re: Which Micor RX for Two Meters
Did I do the transmitter as well? (I don't remember. I do so many projects.) Scott Scott Zimmerman Amateur Radio Call N3XCC 474 Barnett Road Boswell, PA 15531 Lee Pennington wrote: Exactly right, Scott did the coils and castings on mine five years ago.Hasn't been touched since.now the xmitter, well that's another story. On Sun, Jun 6, 2010 at 8:36 AM, terry_wx3m wx3m.te...@gmail.com mailto:wx3m.te...@gmail.com wrote: Do yourself a favor and send the receiver and $100 to Scott n3...@repeater-builder.com mailto:n3xcc%40repeater-builder.com. Then you will have a receiver that is in the 131-150 range. It is worth EVERY penny. It will exceed book specs. --- In Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com, Tim - WD6AWP tisaw...@... wrote: I have the following Micor receivers. TLD4071B, TLD5781AV, and TLD8271B3. Unfortunately none are in range 2. Which, if any of these would be the best for a receiver on 144.5 Tim WD6AWP -- Always drink upstream from the herd.
RE: [Repeater-Builder] Re: Milcom International UHF PA
28-29 amps is on the high side. Are you using the amp at more than maybe 5 MHz or so from the original frequency? Some of the Milcom/Crescend amps are tunable, but many used fixed-value metal-clad mica capacitors in the base and collector matching. The values of the caps and/or their placement along the microstrips is varied depending on frequency. While you could experimentally determine the right values/placements using common sense techniques, it's probably easier just to send it to Crescend to have them move it to your frequency. I have a 350 watt Vocom UHF amp that had the same issue - fixed caps. After counting how many caps I'd have to futz with, I concluded it was cheaper to send it to them and letthem do it for $200. They turned it around in about a week. If you need 250 mW in and 100 watts out, a Mastr II PA would do you nicely (and cheaply!). --- Jeff WN3A -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Adam Feuer Sent: Saturday, June 05, 2010 11:35 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: Milcom International UHF PA Hi Alex, Thanks for the reply! Your description of the pots was great but I don't see ANY tuning caps on any boards in this amp. There's a 10watt board that feeds a 65w board. Then, this 65w board gets split to feed two more 65w boards which get combined as the final output. I can easily set R10 to 100 watts but I would like more info on the tuning caps if it's applicable to this amp. At 100 watts the amp is drawing about 28 to 29 amps. I may be incorrect but I thought some of my other 250mw in 100w out PA's only draw 22 amps. Thanks again! Adam N2ACF On 6/5/2010 6:04 PM, opelgtalex wrote: Adam- R10 controls the bias voltage to the first stage driver- this sets the power out of the amp. Turn this pot down (lower the PA output) peak out all tuning caps starting at the 1st stage, then the 2nd and on to the 4 driver boards. Once all tuning caps are adjusted for peak output, then adjust R10 for the amplifiers rated power out (100W in your case). R9 controls the foldback power in case of a high temp condition the power output is cut by 3dB- the thermal switch is located just below the control board. As per manual R9 is adjusted by removing power from the cooling fan, key the RF source, wait for the unit to reach 135deg F and adjust R9 for 3dB below rated amp output- this is per manual. Hope this helps, Alex --- In Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com , Adam Feuerfeu...@... wrote: Hello All, I have a Milcom International UHF PA on the bench. Model number is P12-O5HA1-C1 rated at 250mw in with 100w out. I'm trying to identify what two pots (R9 R10) do on a board that seems like a control board. Both pots appear to vary the output power and current draw, although one does it more dramatically than the other. Anyone have a manual or information for this PA? Any help would be greatly appreciated. Thanks!! Adam N2ACF Yahoo! Groups Links
Re: [Repeater-Builder] Re: Which Micor RX for Two Meters
No, I did every thing from the RB station to repeater conversion instructions. My problems with the Xmitter involve fluctuating audio deviation levels. It is frequency stable and I have a solid 75-78 watts out of the cans. Thanks for your concern and keep up the good work. de Lee K4LJP 73 On Sun, Jun 6, 2010 at 9:57 AM, Scott Zimmerman n3...@repeater-builder.comwrote: Did I do the transmitter as well? (I don't remember. I do so many projects.) Scott Scott Zimmerman Amateur Radio Call N3XCC 474 Barnett Road Boswell, PA 15531 Lee Pennington wrote: Exactly right, Scott did the coils and castings on mine five years ago.Hasn't been touched since.now the xmitter, well that's another story. On Sun, Jun 6, 2010 at 8:36 AM, terry_wx3m wx3m.te...@gmail.comwx3m.terry%40gmail.com mailto:wx3m.te...@gmail.com wx3m.terry%40gmail.com wrote: Do yourself a favor and send the receiver and $100 to Scott n3...@repeater-builder.com n3xcc%40repeater-builder.com mailto: n3xcc%40repeater-builder.com n3xcc%2540repeater-builder.com. Then you will have a receiver that is in the 131-150 range. It is worth EVERY penny. It will exceed book specs. --- In Repeater-Builder@yahoogroups.comRepeater-Builder%40yahoogroups.com mailto:Repeater-Builder%40yahoogroups.comRepeater-Builder%2540yahoogroups.com, Tim - WD6AWP tisaw...@... wrote: I have the following Micor receivers. TLD4071B, TLD5781AV, and TLD8271B3. Unfortunately none are in range 2. Which, if any of these would be the best for a receiver on 144.5 Tim WD6AWP -- Always drink upstream from the herd. -- Always drink upstream from the herd.
RE: [Repeater-Builder] Re: Which Micor RX for Two Meters
Start with the basics: 1. Clean all of the contact pins and female contacts with a good contact cleaner like Deox-It. When re-installing each of the boards/cards, check check to make sure that all of the male pins are straight and that none of the female contacts have spread - tighten up by squeezing gently with needle-nose pliers where necessary. 2. Clean (or replace) the IDC pot if you haven't already. If speaker audio is normal and doesn't vary in level, and/or if PL injection doesn't change when the audio level changes, chances are it's somewhere in the repeat audio path. But if speaker audio level changes too, then clean/replace the audio level pot on the audio/squelch board as well. Those are my first-pass suggestions. If you want to provide more detail on the problem, including what cards you are using and how you have Tx and Rx wired from the controller to the station, I can probably offer some other suggestions. --- Jeff WN3A -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Lee Pennington Sent: Sunday, June 06, 2010 10:42 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: Which Micor RX for Two Meters No, I did every thing from the RB station to repeater conversion instructions. My problems with the Xmitter involve fluctuating audio deviation levels. It is frequency stable and I have a solid 75-78 watts out of the cans. Thanks for your concern and keep up the good work. de Lee K4LJP 73 On Sun, Jun 6, 2010 at 9:57 AM, Scott Zimmerman n3...@repeater-builder.com mailto:n3...@repeater-builder.com wrote: Did I do the transmitter as well? (I don't remember. I do so many projects.) Scott Scott Zimmerman Amateur Radio Call N3XCC 474 Barnett Road Boswell, PA 15531 Lee Pennington wrote: Exactly right, Scott did the coils and castings on mine five years ago.Hasn't been touched since.now the xmitter, well that's another story. On Sun, Jun 6, 2010 at 8:36 AM, terry_wx3m wx3m.te...@gmail.com mailto:wx3m.terry%40gmail.com mailto:wx3m.te...@gmail.com mailto:wx3m.terry%40gmail.com wrote: Do yourself a favor and send the receiver and $100 to Scott n3...@repeater-builder.com mailto:n3xcc%40repeater-builder.com mailto:n3xcc%40repeater-builder.com mailto:n3xcc%2540repeater-builder.com . Then you will have a receiver that is in the 131-150 range. It is worth EVERY penny. It will exceed book specs. --- In Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com mailto:Repeater-Builder%2540yahoogroups.com , Tim - WD6AWP tisaw...@... wrote: I have the following Micor receivers. TLD4071B, TLD5781AV, and TLD8271B3. Unfortunately none are in range 2. Which, if any of these would be the best for a receiver on 144.5 Tim WD6AWP -- Always drink upstream from the herd. -- Always drink upstream from the herd.
Re: [Repeater-Builder] Re: Which Micor RX for Two Meters
Jeff, I suspect the IDC pot as well. I have sprayed and readjusted it before. Sometimes it lasts for five days, and sometimes it's 5 months. Last time was about three months ago, it is still OK, I've got my fingers crossed. Thanks, de Lee K4LJP 73 On Sun, Jun 6, 2010 at 10:59 AM, Jeff DePolo j...@broadsci.com wrote: Start with the basics: 1. Clean all of the contact pins and female contacts with a good contact cleaner like Deox-It. When re-installing each of the boards/cards, check check to make sure that all of the male pins are straight and that none of the female contacts have spread - tighten up by squeezing gently with needle-nose pliers where necessary. 2. Clean (or replace) the IDC pot if you haven't already. If speaker audio is normal and doesn't vary in level, and/or if PL injection doesn't change when the audio level changes, chances are it's somewhere in the repeat audio path. But if speaker audio level changes too, then clean/replace the audio level pot on the audio/squelch board as well. Those are my first-pass suggestions. If you want to provide more detail on the problem, including what cards you are using and how you have Tx and Rx wired from the controller to the station, I can probably offer some other suggestions. --- Jeff WN3A -Original Message- From: Repeater-Builder@yahoogroups.comRepeater-Builder%40yahoogroups.com [mailto:Repeater-Builder@yahoogroups.comRepeater-Builder%40yahoogroups.com] On Behalf Of Lee Pennington Sent: Sunday, June 06, 2010 10:42 AM To: Repeater-Builder@yahoogroups.comRepeater-Builder%40yahoogroups.com Subject: Re: [Repeater-Builder] Re: Which Micor RX for Two Meters No, I did every thing from the RB station to repeater conversion instructions. My problems with the Xmitter involve fluctuating audio deviation levels. It is frequency stable and I have a solid 75-78 watts out of the cans. Thanks for your concern and keep up the good work. de Lee K4LJP 73 On Sun, Jun 6, 2010 at 9:57 AM, Scott Zimmerman n3...@repeater-builder.com n3xcc%40repeater-builder.com mailto:n3...@repeater-builder.com n3xcc%40repeater-builder.com wrote: Did I do the transmitter as well? (I don't remember. I do so many projects.) Scott Scott Zimmerman Amateur Radio Call N3XCC 474 Barnett Road Boswell, PA 15531 Lee Pennington wrote: Exactly right, Scott did the coils and castings on mine five years ago.Hasn't been touched since.now the xmitter, well that's another story. On Sun, Jun 6, 2010 at 8:36 AM, terry_wx3m wx3m.te...@gmail.com wx3m.terry%40gmail.com mailto: wx3m.terry%40gmail.com wx3m.terry%2540gmail.com mailto:wx3m.te...@gmail.com wx3m.terry%40gmail.com mailto:wx3m.terry%40gmail.com wx3m.terry%2540gmail.com wrote: Do yourself a favor and send the receiver and $100 to Scott n3...@repeater-builder.com n3xcc%40repeater-builder.com mailto:n3xcc%40repeater-builder.com n3xcc%2540repeater-builder.com mailto:n3xcc%40repeater-builder.com n3xcc%2540repeater-builder.com mailto:n3xcc%2540repeater-builder.comn3xcc%252540repeater-builder.com . Then you will have a receiver that is in the 131-150 range. It is worth EVERY penny. It will exceed book specs. --- In Repeater-Builder@yahoogroups.comRepeater-Builder%40yahoogroups.com mailto:Repeater-Builder%40yahoogroups.comRepeater-Builder%2540yahoogroups.com mailto:Repeater-Builder%40yahoogroups.comRepeater-Builder%2540yahoogroups.com mailto:Repeater-Builder%2540yahoogroups.comRepeater-Builder%252540yahoogroups.com , Tim - WD6AWP tisaw...@... wrote: I have the following Micor receivers. TLD4071B, TLD5781AV, and TLD8271B3. Unfortunately none are in range 2. Which, if any of these would be the best for a receiver on 144.5 Tim WD6AWP -- Always drink upstream from the herd. -- Always drink upstream from the herd. -- Always drink upstream from the herd.
[Repeater-Builder] Looking for a SAM board for MSF 10000
Hello group - i am looking for a SAM board for my MSF 1 - is there any material available. i asked around here in germany but there seems to be no chance to get one. 73 de ingmar - dl3hby
[Repeater-Builder] transmission is intermittent and voice cuts out with my mc-micro repeater
Seem to have period where my transmission (voice) cuts out for a few seconds every so often, and the person at the other end can't hear me. On the receiving end,Does anyone have any idea? Thanks in advance,
Re: [Repeater-Builder] transmission is intermittent and voice cuts out with my mc-micro repeater
Could be a lot of things. If you are running a PL tone, the level may be too low and your voice is causing talk off. Could be you are falsing the controller's touch tone decoder and it's programmed to not pass audio when it hears a tone. Could be deviation is too high somewhere and you are going out of the passband of the receiver. Might be a bad mic or mic cord on your radio. etc., etc. Chuck WB2EDV - Original Message - From: mimomeg mimo...@yahoo.fr To: Repeater-Builder@yahoogroups.com Sent: Sunday, June 06, 2010 10:55 AM Subject: [Repeater-Builder] transmission is intermittent and voice cuts out with my mc-micro repeater Seem to have period where my transmission (voice) cuts out for a few seconds every so often, and the person at the other end can't hear me. On the receiving end,Does anyone have any idea? Thanks in advance, Yahoo! Groups Links No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.829 / Virus Database: 271.1.1/2921 - Release Date: 06/06/10 02:25:00
RE: [Repeater-Builder] transmission is intermittent and voice cuts out with my mc-micro repeater
Not enough information given to draw any conclusion! Fred W5VAY _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of mimomeg Sent: Sunday, June 06, 2010 9:56 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] transmission is intermittent and voice cuts out with my mc-micro repeater Seem to have period where my transmission (voice) cuts out for a few seconds every so often, and the person at the other end can't hear me. On the receiving end,Does anyone have any idea? Thanks in advance,
RE: [Repeater-Builder] transmission is intermittent and voice cuts out with my mc-micro repeater
Chuck is right... So we need to ask: Does this phenomenon happen to just YOUR transmissions, or with everyone's transmissions?? You need to determine WHERE the problem is occurring before you can troubleshoot further. Mark - N9WYS -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Chuck Kelsey Could be a lot of things. If you are running a PL tone, the level may be too low and your voice is causing talk off. Could be you are falsing the controller's touch tone decoder and it's programmed to not pass audio when it hears a tone. Could be deviation is too high somewhere and you are going out of the passband of the receiver. Might be a bad mic or mic cord on your radio. etc., etc. Chuck WB2EDV - Original Message - From: mimomeg mimo...@yahoo.fr Seem to have period where my transmission (voice) cuts out for a few seconds every so often, and the person at the other end can't hear me. On the receiving end,Does anyone have any idea? Thanks in advance,
RE: [Repeater-Builder] transmission is intermittent and voice cuts out with my mc-micro repeater
Check the deviation levels of your voice and the PL tone (if used), and verify that they are compatible with the repeater's receive bandpass. In some radios- Alinco and Icom are typical- the PL tone is way too high in deviation, and gets distorted when voice peaks push the total deviation into limiting. When that happens, the repeater receiver mutes when it can't detect a valid PL tone. This is called talk-off. One of the users of a local repeater has an unusually high-pitched voice, and the controller would occasionally mute the audio while he was speaking, thinking it was detecting a DTMF control tone. Does this problem occur with other users? If not, your own radio may be off-frequency, or over-deviating. It is also possible that your PL tone is weak or distorted, and the repeater's decoder can't maintain a good lock on it. Further investigation of this problem is needed. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of mimomeg Sent: Sunday, June 06, 2010 7:56 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] transmission is intermittent and voice cuts out with my mc-micro repeater Seem to have period where my transmission (voice) cuts out for a few seconds every so often, and the person at the other end can't hear me. On the receiving end,Does anyone have any idea? Thanks in advance
Re: [Repeater-Builder] transmission is intermittent and voice cuts out with my mc-micro repeater
Falsing of the DTMF decoder in the controller? Disable DTMF muting temporarily and see if the problem stops. On Sun, Jun 6, 2010 at 7:55 AM, mimomeg mimo...@yahoo.fr wrote: Seem to have period where my transmission (voice) cuts out for a few seconds every so often, and the person at the other end can't hear me. On the receiving end,Does anyone have any idea? Thanks in advance, Yahoo! Groups Links
RE: [Repeater-Builder] transmission is intermittent and voice cuts out with my mc-micro repeater
If the system that you are using has CTCSS then it sounds like your voice at times is causing the tone to not be decoded causing your voice to cut out. This happens if your deviation is too wide and/or your mic volume is too high. David From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of mimomeg Sent: Sunday, June 06, 2010 9:56 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] transmission is intermittent and voice cuts out with my mc-micro repeater Seem to have period where my transmission (voice) cuts out for a few seconds every so often, and the person at the other end can't hear me. On the receiving end,Does anyone have any idea? Thanks in advance,
Re: [Repeater-Builder] Re: Milcom International UHF PA
Hi Jeff, Thanks for the reply. I too, thought that it was drawing a little too much current. The unit has a sticker on it that says 450 to 470 and I'm testing it with a MastrII exciter on 442.800. So, you're probably right in what's going on. I'm going to see if I have an ICOM for my 449.875 repeater and if so, test it on that frequency. Hopefully, I'll see the current draw go down and then know for sure what's going on. If I want the caps changed, is there anyone in particular at Crescend I need to talk to? I wasn't aware that they would support the Milcom line. Thanks!! Adam N2ACF On 6/6/2010 10:26 AM, Jeff DePolo wrote: 28-29 amps is on the high side. Are you using the amp at more than maybe 5 MHz or so from the original frequency? Some of the Milcom/Crescend amps are tunable, but many used fixed-value metal-clad mica capacitors in the base and collector matching. The values of the caps and/or their placement along the microstrips is varied depending on frequency. While you could experimentally determine the right values/placements using common sense techniques, it's probably easier just to send it to Crescend to have them move it to your frequency. I have a 350 watt Vocom UHF amp that had the same issue - fixed caps. After counting how many caps I'd have to futz with, I concluded it was cheaper to send it to them and letthem do it for $200. They turned it around in about a week. If you need 250 mW in and 100 watts out, a Mastr II PA would do you nicely (and cheaply!). --- Jeff WN3A -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Adam Feuer Sent: Saturday, June 05, 2010 11:35 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: Milcom International UHF PA Hi Alex, Thanks for the reply! Your description of the pots was great but I don't see ANY tuning caps on any boards in this amp. There's a 10watt board that feeds a 65w board. Then, this 65w board gets split to feed two more 65w boards which get combined as the final output. I can easily set R10 to 100 watts but I would like more info on the tuning caps if it's applicable to this amp. At 100 watts the amp is drawing about 28 to 29 amps. I may be incorrect but I thought some of my other 250mw in 100w out PA's only draw 22 amps. Thanks again! Adam N2ACF On 6/5/2010 6:04 PM, opelgtalex wrote: Adam- R10 controls the bias voltage to the first stage driver- this sets the power out of the amp. Turn this pot down (lower the PA output) peak out all tuning caps starting at the 1st stage, then the 2nd and on to the 4 driver boards. Once all tuning caps are adjusted for peak output, then adjust R10 for the amplifiers rated power out (100W in your case). R9 controls the foldback power in case of a high temp condition the power output is cut by 3dB- the thermal switch is located just below the control board. As per manual R9 is adjusted by removing power from the cooling fan, key the RF source, wait for the unit to reach 135deg F and adjust R9 for 3dB below rated amp output- this is per manual. Hope this helps, Alex --- In Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com , Adam Feuerfeu...@... wrote: Hello All, I have a Milcom International UHF PA on the bench. Model number is P12-O5HA1-C1 rated at 250mw in with 100w out. I'm trying to identify what two pots (R9 R10) do on a board that seems like a control board. Both pots appear to vary the output power and current draw, although one does it more dramatically than the other. Anyone have a manual or information for this PA? Any help would be greatly appreciated. Thanks!! Adam N2ACF Yahoo! Groups Links Yahoo! Groups Links
[Repeater-Builder] OT: WolframAlpha computational web site
All, For those of you out there who are into heavy electrical math, I stumbled across a web site that will do a lot of math computations plus show you not only the results, but also the formulas behind it. First, go to this link and be prepared to spend close to 14 minutes of your time watching the tutorial. You'll need sound, but I suspect most, if not all of you have that option. http://www.wolframalpha.com/screencast/introducingwolframalpha.html Once you have viewed the tutorial, here's the link to the web site: http://www.wolframalpha.com/ I've spent countless hours this past weekend playing with it. It is truly awesome. Don, KD9PT
Re: [Repeater-Builder] OT: WolframAlpha computational web site
I have the app on my iPhone :D On Sun, Jun 6, 2010 at 21:26, Don Kupferschmidt dkupf...@sbcglobal.netwrote: All, For those of you out there who are into heavy electrical math, I stumbled across a web site that will do a lot of math computations plus show you not only the results, but also the formulas behind it. First, go to this link and be prepared to spend close to 14 minutes of your time watching the tutorial. You'll need sound, but I suspect most, if not all of you have that option. http://www.wolframalpha.com/screencast/introducingwolframalpha.html Once you have viewed the tutorial, here's the link to the web site: http://www.wolframalpha.com/ I've spent countless hours this past weekend playing with it. It is truly awesome. Don, KD9PT
