[Repeater-Builder] re-tune Vocom amp
I have a Vocom amplifier model VVC100-10RF tuned at 152.375. I want to tune it for 145.450. Does anybody have tuning instructions ? Thanks !
[Repeater-Builder] VXR-5000 external amp
Is anybody using an external amplifier with a Yaesu VXR-5000 repeater ? If so please fill me in as to what type of amp you are using along with a description of the configuration. I appreciate it !
[Repeater-Builder] Re: Duplxer, tuned cavity question.
I am not going to be able to stack the antennas. They Would be about 25-40 feet apart horizantal. I guess what I need is 2 bandpass filters. I think thats what I am looking for. Now the big question. Can I build them? And where would I find the information? If I can't build them, where would be an inexspensive place to buy them? I don't know of any Elmers in my area that know about bandpass filters, or one that would take the time to help. Thats why I am here. Thanks, Kevin Kc7hgn --- In Repeater-Builder@yahoogroups.com, Milt men...@... wrote: OK, too much interperatation based on a lack of information. For 2 antennas you need vertical seperation (best) or horizantal seperation (very large), or 2 bandpass filters, one for each transceiver. Easiest solution, if you have the vertical real estate, use at least 25-30 ft seperation (preferably 40-50ft) between the antennas. I prefer to use top of lower antenna to bottom of top antenna as the measurement of distance. Charts often say center of antenna radiation. Horizontal seperation would require 300' for the same amount of isolation. Next best is a lesser amount of vertical seperation, coupled with bandpass cavities. See http://www.repeater-builder.com/antenna/separation.html I would suggest that you find a local elmer to assist you. Milt N3LTQ
Re: [Repeater-Builder] Re: Duplxer, tuned cavity question.
My really rough guess is that you will need around 85dB of isolation between the two stations. Using two antennas 25 feet apart is only going to give you about 30dB of isolation. A bandpass filter at .64Mhz off the center frequency will only give you around 10-20 dB more of isolation. I think you will need either a bandpass/bandreject filter, or possibly a notch filter on each station. My math is all best-guess, so please verify it before you go buying equipment. I use a TX/RX Vari Notch 10 cavity for a similar application, but they are expensive. I don't think you sare going to find a cheap fix. Someone with more math skills can possibly verify my guess. 73, Joe, K1ike On 7/22/2010 7:10 AM, Kc7hgn wrote: I am not going to be able to stack the antennas. They Would be about 25-40 feet apart horizantal. I guess what I need is 2 bandpass filters. I think thats what I am looking for. Now the big question. Can I build them? And where would I find the information? If I can't build them, where would be an inexspensive place to buy them? I don't know of any Elmers in my area that know about bandpass filters, or one that would take the time to help. Thats why I am here. Thanks, Kevin Kc7hgn
Re: [Repeater-Builder] Re: Icom OPC-617 Cable
The solder jumpers D Data and F Flat only affect the freq response of the transmitted audio. A wrong setting wouldn't interfere with PTT. I think there was a drawing in the manual linked below, illustrating the locations. Are you grounding the PTT line and have reprogrammed the radio to allow external PTT? Regarding the speaker, are you getting the audio you need from the connector, but you want to disable the internal speaker? Maybe inserting a 3.5mm plug in the speaker connector on the back will mute the internal speaker. You could put a resistor inside the plug to provide a load. Duane AB8QU On 7/21/2010 9:13 PM, ryan_151 wrote: I connected the OPC-617 as you said but i didnt solder the D or F bead and is probly why it didnt work. when i recieve audio it comes out the little speaker inside the radio and the PTT wont work to let me transmit. Im not using any data so i guess i need to solder the D bead, is this Correct?? is the D bead the jumper on the left side of the radio when the display is pointing at you?? THANKS FOR YOUR HELP!!!
Re: [Repeater-Builder] Re: Icom OPC-617 Cable
What model radio is this ? NIMS: 100 200 300 400 700 800 Arrl Extra Class VE HAZ MAT- A O sent from my blackberry mobile device -Original Message- From: Duane Hall du...@dheco.com Sender: Repeater-Builder@yahoogroups.com Date: Thu, 22 Jul 2010 11:18:04 To: Repeater-Builder@yahoogroups.com Reply-To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: Icom OPC-617 Cable The solder jumpers D Data and F Flat only affect the freq response of the transmitted audio. A wrong setting wouldn't interfere with PTT. I think there was a drawing in the manual linked below, illustrating the locations. Are you grounding the PTT line and have reprogrammed the radio to allow external PTT? Regarding the speaker, are you getting the audio you need from the connector, but you want to disable the internal speaker? Maybe inserting a 3.5mm plug in the speaker connector on the back will mute the internal speaker. You could put a resistor inside the plug to provide a load. Duane AB8QU On 7/21/2010 9:13 PM, ryan_151 wrote: I connected the OPC-617 as you said but i didnt solder the D or F bead and is probly why it didnt work. when i recieve audio it comes out the little speaker inside the radio and the PTT wont work to let me transmit. Im not using any data so i guess i need to solder the D bead, is this Correct?? is the D bead the jumper on the left side of the radio when the display is pointing at you?? THANKS FOR YOUR HELP!!!
[Repeater-Builder] Re: Need Help Locating Connector, Micro N Female Chasis Mount Crimp On
I'll probably end up going with 1/4''. Thanks guys... --- In Repeater-Builder@yahoogroups.com, Jamey Wright jwri...@... wrote: We use 1/4 superflex in all of our cabinets for 800 MHz systems on the receive side so at VHF it should work just as well. Plus, there are BNC connectors for the 1/4 superflex. Jamey Wright Systems Analyst/EDACS Administrator Morgan County EMCD 911 Decatur, AL 256-552-0911 -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of kg4ogn Sent: Wednesday, July 21, 2010 3:32 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Need Help Locating Connector, Micro N Female Chasis Mount Crimp On I am needing to replace the receive connector on a Kenwood TKR-750 repeater. The existing connector is a Female BNC Chasis mount. I am doing away with the LMR400 interconnects inside the cabinet and upgrading to 1/2'' Superflex. Since no one makes a BNC connector for 1/2 hardline I would like to swap the RX BNC connector out with an N connector. I've been searching the web for the last 40 minutes and can't seem to find a Micro N Female Chasis mount crimp on connector (I say micro because the current connector is a BNC with a very small flange on it and a standard flange on an N Connector is too large and I don't want to get into drilling new holes on the repeater) I'm not sure if such a connector even exists, but I figured I would ask the experts and see if anyone could point me in the right direction. Thanks for the help guys... Alex N4TIA Yahoo! Groups Links
Re: [Repeater-Builder] Re: Icom OPC-617 Cable
IC-F121 Icom On 7/22/2010 11:28 AM, Gary W. Gibbs wrote: What model radio is this ? NIMS: 100 200 300 400 700 800 Arrl Extra Class VE HAZ MAT- A O sent from my blackberry mobile device
[Repeater-Builder] Advanced Communications Systems Mark 4 repeater / controller audio board
Hey all, I have discovered my Advanced Communications Systems Mark 4 repeater / controller manual has no board layout for the audio board. I do have the schematic, just no parts locator drawing. It's really hard to figure out which pot is which. I need to adjust some levels. Does anyone have a copy of this drawing? I have lot's of documentation on this machine, I purchased the manual new from the factory. I also have the radio manuals. Oh', BTW, I have a working UHF Xmiter and receiver for these units if you need a spare. I'm using external radios and took the factory ones out. I'd like to meet someone that still has one of these in service. I have the Message Master and MultiFAX option boards installed. I wish I had the RS-232 board if anyone has one. Eddie KC5UIB
Re: [Repeater-Builder] Advanced Communications Systems Mark 4 repeater / controller audio board
Email me next week I have all the manuals and diagrams...great little repeater and there is still factory maint. 73, dave wa3gin - Original Message - From: eddie.sinclair To: Repeater-Builder@yahoogroups.com Sent: Thursday, July 22, 2010 1:50 PM Subject: [Repeater-Builder] Advanced Communications Systems Mark 4 repeater / controller audio board Hey all, I have discovered my Advanced Communications Systems Mark 4 repeater / controller manual has no board layout for the audio board. I do have the schematic, just no parts locator drawing. It's really hard to figure out which pot is which. I need to adjust some levels. Does anyone have a copy of this drawing? I have lot's of documentation on this machine, I purchased the manual new from the factory. I also have the radio manuals. Oh', BTW, I have a working UHF Xmiter and receiver for these units if you need a spare. I'm using external radios and took the factory ones out. I'd like to meet someone that still has one of these in service. I have the Message Master and MultiFAX option boards installed. I wish I had the RS-232 board if anyone has one. Eddie KC5UIB
[Repeater-Builder] Micor HD,PA install over an Master 2
Hia ll is there anyone outhere that have ever install,fit an HD ,PA from a Micor,the 100 watts over i have some here and my Master 2 are dead ,,,i dont have any spare parts. PA are PA there must be a way too install them on my master 2 . thanks for your guidance and best if you have picture it would be 125% best thanks 73/s Gervais ve2ckn
[Repeater-Builder] Re: Re-Tune a Vocom Amplifier
w5ppb w5...@... wrote: I have a Vocom amplifier model VVC100-10RF tuned at 152.375. I want to tune it for 145.450. Does anybody have tuning instructions ? Thanks ! Most of these type and model amplifiers are not easily re-tuned down to the Ham Bands. And as many Vocom Amplifiers as I have... I don't even know if they've ever provided any type of circuit diagram. I once asked Cresend for a diagram and they wouldn't provide it saying only they should re-tune their amplifier products. I don't buy or recommend Cresend any more... I would tell you to flip (sell) the Vocom and buy something already down into the Ham Bands where you can use it without grief. s.
Re: [Repeater-Builder] Re: Re-Tune a Vocom Amplifier
I've sent a few of these back to cresend, they tuned them for the ham band at minimal cost, and they have worked for years. lance n2HBA - Original Message - From: skipp025 To: Repeater-Builder@yahoogroups.com Sent: Thursday, July 22, 2010 8:21 PM Subject: [Repeater-Builder] Re: Re-Tune a Vocom Amplifier w5ppb w5...@... wrote: I have a Vocom amplifier model VVC100-10RF tuned at 152.375. I want to tune it for 145.450. Does anybody have tuning instructions ? Thanks ! Most of these type and model amplifiers are not easily re-tuned down to the Ham Bands. And as many Vocom Amplifiers as I have... I don't even know if they've ever provided any type of circuit diagram. I once asked Cresend for a diagram and they wouldn't provide it saying only they should re-tune their amplifier products. I don't buy or recommend Cresend any more... I would tell you to flip (sell) the Vocom and buy something already down into the Ham Bands where you can use it without grief. s.
[Repeater-Builder] Re: Re-Tune a Vocom Amplifier
Excellent... But I would not normally suggest someone go inside to try and mod the amplifier down to the Amateur Band. Things go smoother when the right people do the job with the right parts and knowledge of how to... s. Captainlance captainla...@... wrote: I've sent a few of these back to cresend, they tuned them for the ham band at minimal cost, and they have worked for years. lance n2HBA - Original Message - From: skipp025 To: Repeater-Builder@yahoogroups.com Sent: Thursday, July 22, 2010 8:21 PM Subject: [Repeater-Builder] Re: Re-Tune a Vocom Amplifier w5ppb w5ppb@ wrote: I have a Vocom amplifier model VVC100-10RF tuned at 152.375. I want to tune it for 145.450. Does anybody have tuning instructions ? Thanks ! Most of these type and model amplifiers are not easily re-tuned down to the Ham Bands. And as many Vocom Amplifiers as I have... I don't even know if they've ever provided any type of circuit diagram. I once asked Cresend for a diagram and they wouldn't provide it saying only they should re-tune their amplifier products. I don't buy or recommend Cresend any more... I would tell you to flip (sell) the Vocom and buy something already down into the Ham Bands where you can use it without grief. s.
