Re: [Repeater-Builder] Cold temps and repeaters
You might want to inspect your connectors first to see if you have any moisture going into the connectors good Amp connectors help out with extremes. Used to have a repeater in NYC. When it snowed or got wet, it squealed and grunted with 9914. Swapped out the old cabe to the good stuff Heiiax and only the connectors gave up problems. On 2010-01-03, George Henry ka3...@att.net wrote: I remember the 146.79 repeater in Henrietta (Rochester) NY back in the mid/late 70's It was housed in an old 'fridge in a shed in the middle of a farm field, at the base of the tower. IIRC, it had a fan to cool it in the summer, and a 25-watt light buld to keep it warm in the winter. KISS at it's best. George, KA3HSW / WQGJ413 - Original Message - From: Chuck Kelsey wb2...@roadrunner.com To: Repeater-Builder@yahoogroups.com Sent: Sunday, January 03, 2010 2:58 PM Subject: Re: [Repeater-Builder] Cold temps and repeaters I've seen it happen. Changes in temperature can affect the stability of a transmitter causing it to spur. Intermod sources can come and go with weather changes as well. It's 12 chilly degrees here in western New York and the snow has been heavy all day. 45 would be a heat wave ;-) Chuck WB2EDV
Re: [Repeater-Builder] HTX-202 RUBBER DUCK WANTED.
There are plenty of other antennae that would fit the bill. Just look for a quarterwave antenna. Adam Kb2jpd On Sat, Nov 1, 2008 at 2:27 PM, n8rtn [EMAIL PROTECTED] wrote: Hi,iam looking for a Original htx-202 rubber duck ant any one have one? thanksN8RTN..Mike
Re: [Repeater-Builder] Re: Part 97 question reference to Repeater control
it is a good idea to review the most current copy of Part 97. The ARRL book is excellent for that. As for using the WiFi router for Repeater control, you would have to lock it down very well, use special firmware, or some non-ham script kiddie will attempt a DoS attack (denial of service). You can try all you want but you will be locked out unless you have a smart way to ignore a data attack. Most operators hang two receivers on the input and a few minority even use the output frequency. You just have to know how to do it. Adam kb2jpd
Re: [Repeater-Builder] Re: PL-259 type 50 ohm terminations?
I just made my own using carbon resistors and a little practice doing some soldering inside confined spaces. The terminator/adaptor does not make any SWR bumps but it is your wish. Adam Kb2jpd On 6/20/07, skipp025 [EMAIL PROTECTED] wrote: Hi Joe, It's what I'm doing now... but I do have one PL-259 termination and I'd like to find/buy others. I'm trying to get away from the adapter method. Still looking to see who makes/sells them and where... cheers, s. [EMAIL PROTECTED] wrote: Why not use an adapter on what you have? Joe -- Original message -- From: skipp025 [EMAIL PROTECTED] Re: PL-259 type 50 ohm terminations? Anyone know any place/source selling 50 ohm terminations with a PL-259 type connector. I've got a ton with N connectors but would be interested in picking up some of the 5 to 50 or 100 watt pl-259 connector loads. thanks up front for your reply posts... cheers, skipp
Re: [Repeater-Builder] Re: Some East and West Coast Repeaters - Mandate to 5 Watts Max
It is probably tempororay until the Chinese debris is accounted for. The military is interested in knowing what kind of mechanism is used for the anit-sat system. Adam Kb2Jpd On 5/15/07, Nate Duehr [EMAIL PROTECTED] wrote: On May 14, 2007, at 2:13 PM, Rick Parrish wrote: Chuck Kelsey wrote: That's not the way it's going to work. Remember, amateur radio is a secondary user on this band and the federal government is the primary user. If we make too big of a fuss, we could loose it all. I understand you. My point is ... this is military hardware where people's lives are at stake. If 50 or so watts is all the enemy needs to render the equipment useless ... it shouldn't be used for this application. Chuck, A conversation I had with some folks who really understand RADAR systems, led to an interesting theory... PAVE-PAWS is probably trying to see/track some VERY small targets, if local UHF repeaters are bothering them. The best scientifically-based theory we came up with off-line, was that the bits and pieces of the results of the Chinese testing their anti-satellite technology against their own bird recently, created so much on-orbit crap and debris, that every available resource that can see those bits and chunks -- which are all very dangerous to other satellites and launches, as all on-orbit debris is -- that systems like PAVE-PAWS are being pushed to their limits to see all of it. We may have the Chinese government to thank for the recent need to enforce (the rules aren't new) the ERP rules near the RADAR sites. Seems reasonable to me, after thinking about it. And just weird enough to have a ring of truth, considering the strange things that happen in the world. The only unreasonable part of those rules is the complete coverage by those ERP rules of ALL of Arizona... that is probably excessive. But there haven't been reports of it being enforced there, yet. -- Nate Duehr - WY0X
Re: [Repeater-Builder] Re: MOTOROLA Rib Error
You should consider using one of the old HP handheld PCs. It uses the old tech and it comes with a comport. Friends of mine have been using it with the old RIB software and its work fine with it. FYI. http://www.google.com/search?q=HP+LX+200ie=utf-8oe=utf-8aq=trls=org.mozilla:en-US:officialclient=firefox-a Adam Kb2jpd On 5/15/07, Ron Wright, Skywarn Coodinator [EMAIL PROTECTED] wrote: Jim, Wonder if this is with one of your radios or is consistant with others. One note is the speed of the computer. RS232 at a particlar baud rate is the same for all computers except for the data speed determind by the time between bytes. Some have commented newer high speed computers work too fast. The radio might not be able to respond quickly enough if the data is fed too fast. I use an old 486. If your situation is intermitment it might be on the edge of where it will work and not work. 73, ron, n9ee/r --- In Repeater-Builder@yahoogroups.comRepeater-Builder%40yahoogroups.com, Jim Cicirello [EMAIL PROTECTED] wrote: Hi Guys, I am having an intermittent programming problem with my Motorola Rib Box. This is one of the after market rib boxes that works great 95% of the time and the other 5% I get an error message Serial BUS FAILURE POWER FAULT. My radio is powered up, my battery is good in the rib box and the box is on, I have used two different cables, and still the error.What would I look for? I have looked for solder joints on the db25's and all look good. I have pinned out the cables, all good. Any ideas would be greatly appreciated. Thank JIM
Re: [Repeater-Builder] Problem of repeater after lighting striked RX antenna
The lightning did create some damage. Since you are stating it is in the receiver, you will have to check the antenna , the feedline, and any ancillary components connected to the former. If you did not have any lightning protection, then either the antenna or one of the connectors arced over and did the job for it. You can find out by either using an swr analyzer that will work in a high rf environment or simply get a low power ht and swr meter and get the swr on the antenna. If it is high, at least you will have a direction to go for your investigations. Adam Kb2jpd 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] Winegard TV pre-amps
JOHN MACKEY wrote: It seems to me that this group has had discussions before about Winegard TV pre-amps causing wide-band RF noise. Does anyone know if there is a good model of TV pre-amp that works for the job intended but does not cause the RF noise? thanks Try Motorola. They are built. Adam Kb2Jpd 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] IC-2200H Digtal Repeater?
atms169 wrote: I want to attempt to setup a Digital Repeater on VHF using the Icom IC-2200H with optional board. I would like the D-Star system but, Hams here seem to avoid paying for that kind of money. So I would like to compensate and try something different. Has anyone ever attempted this? Did it work or has it worked well for you? Any information would be helpful. Aaron VA6AE For reference: http://www.icomamerica.com/products/amateur/2200h/ The D-Star is an open standard so it is hoped domestic hams would get the soldering irons out and design their own versions for the various manufacturers. The IC-2200H looks like it has the prior generation digital board with the same modem but not the D-Star software in it. You would have to upgrade the radio (read, sell the radio and get the newer model) to the new mobile D-Star dual-band radios just published in QST. It is not a so sorry situation. If you wanna play and burn out your new 2200, it is your money. I would think it would make more sense to buy some commercial grade gear that has the bandwidth for the digital signaling and the duty cycle for it. Use that for the digital repeater system. BTW, There has been little mention of the flexibility of the digital protocols on simplex repeaters and links as well as the full duplex repeaters. I hope your experimentation pans out. I miss the old days with the PC Clones where they would leave a copy of DEBUG in the BIOS or a back door in some of the software. We need more hooks in the new software so we can get back to the future. Pity there is little of that in the land of the rising sun. Adam Kb2jpd 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] Ht repeater maker?
Gary wrote: I am looking to build up a low powered portable repeater. Using a couple of HT's. Is there any very basic (with ID) controller out there to handle speaker out audio and generate its won COR and PTT Gary Did you start with Google? : http://www.google.com/search?q=ht+repeater+controllerstart=0ie=utf-8oe=utf-8client=firefox-arls=org.mozilla:en-US:official There are a lot of kits and pre-assembled stuff out there. I find them every once and awhile in the used gear section in AES. Don't forget to get a copy of Part 97 or whatever rules you are under in your region. In the US, remote repeater control can only be done from 222 up. Do 2m and you may get into a bit of trouble. Good luck. Adam Kb2jpd 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: Fan timer
Chuck Kelsey wrote: Maybe I'm missing something here, but I've never subscribed to the theory of having fans run beyond PTT. What purpose does it serve? The transistors are generating heat only when they are on. As soon as they are off they begin to cool down on their own. If the fans are doing their job, they are keeping temperatures to a prescribed level the entire duration of transmit. While running the fans beyond the end of transmit will cool the finals after the end of the QSO quicker than without, why should it matter? Chuck WB2EDV Hello from Adam Kb2jpd Fan timers are necessary whenever people are in close proximity to air cooled electronic equipment. However, in the vein of Repeater-Builder, most repeaters are installed in hostile installation environments adjacent to other heat-producing electrical and electronic equipment. Most of my installations have been in carbon coated elevator rooms with temperature ranges from 80 degrees F to 130 degrees F. Fan timers without temperature input sensors are not a real help here. If you want to install an fan, it has a purpose, to move air. A lot of times, it amazes me to see how much equipment is designed with no temperature sensor to monitor and throttle the cooling system of these repeater systems. It also amazes me that some fundamental equipment necessary for repeater operation was not designed with physics of thermodynamics in mind. Last repeater I designed, I made sure a heat channel was in back , vents to allow heated air to rise were in place , vents on the bottom for whatever cool air entered, air filters on the bottom were installed. I bought an repeater ampilifer and my partner installed it and it lasted all of 24 hours. He took the puffin fan array I had in there blowing the hot air up and away and was blasting it with downward hot air. Nice. You can design one fan timer with two ro more inputs using transistor or usual list of suspects like the 555. 73 Adam 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] very close frequencies seperation
Usually, you use a backbone frequency on a different band (in the US 220 Mhz
up) or a dedicated dc controlled phone line so you can have the desired linking.
It is difficult, but not impossible, to link on the same band. Is that you will
thinking of implementing.?
Adam Kb2Jpd
-Original Message-
From: Ian Wells [EMAIL PROTECTED]
Subj: [Repeater-Builder] very close frequencies seperation
Date: Mon Mar 27, 2006 4:21 pm
Size: 2K
To: Repeater-Builder@yahoogroups.com
v\:* {behavior:url (#default#vml);} v\:* { BEHAVIOR: url
(#default#vml) } Hi guys .I am trying to receive 473.575mhz from a 25
watt repeater ,line of sight, 50kms away and and retransmitt it on 473.200 at
25 watt on another site.The transmitt antenna is a 6db vertical ,9 meters above
ground and the rx antenna is a 6 db uhf beam 1-2 meter above ground ,aimed at
the 473.575 site Is it possible to notch out frequencies going into a receiver
that are275 or 375 khz off a uhfreceive signal or is it going to be too close
to filter outthe TX .
Thank You,
Ian Wells,
Kerinvale Comaudio,
www.kerinvalecomaudio.com.au
YAHOO! GROUPS LINKS
Visit your group Repeater-Builder on the web.
To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
--- Attachment imstp_wine_glass_en.gif---
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: Hamfests in general
Hello all from Adam Kb2Jpd Just returned from the Timonium Hamfest over at the Maryland Fairgrounds in Maryland. It was a decent size hamfest and there was plenty of stuff to buy, swap and take home. There was the eBay effect - I call it when a vendor is selling a item, and had priorly priced the item on eBay, as a reference. You then see the vendor reluntant to move from his preconceived value of the item is. If I was him, I would have post it on eBay so he can see what he would really get for it. The eBay effect stung and struck a few times but overall it was a pretty decent hamfest and it was not more of a computerfest as those in the past. Yes, there were those getting rid of the boat anchors and those making space for this years junk. Some of the guys there thought the turnout was less. Yes, the weather forcast did jinx the opening of the fest. Just a few miles away in PA, they received two or so inches of wet snow. Timonium, on the other hand, started with high overcast and then the sun beamed thru in the late morning. If you are looking for parts, they were there. However, the smaller hamfests are taking a big hit, thanks to the lower attendances, and due to the Internet auction effect. Lets see how pronounced it will be when Google decides to go into the eBay business. Anyway, had a fine time there and look forward for the rest this season before summer arrives. Adam Kb2Jpd YAHOO! GROUPS LINKS Visit your group "Repeater-Builder" on the web. 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] portable antenna suggestions
How about horizontal spacing and changing the polarization of one of the elements? If he does it right, that can work. Another thing is to use a remote receiver and pipe it in thru microwave or 800 Mhz. Adam Kb2jpd Adam Kb2jpd -Original Message- From: Eric Lemmon [EMAIL PROTECTED] Subj: RE: [Repeater-Builder] portable antenna suggestions Date: Sun Mar 5, 2006 8:49 pm Size: 1K To: Repeater-Builder@yahoogroups.com Chris, My thought: Don't bother. You'll need about 72 dB of isolation with a typical GMRS repeater pair, and that calls for at least 39 feet of vertical separation between the antennas. That's hardly the kind of portable antenna setup that is appropriate for search and rescue applications. Just get an ordinary UHF mobile duplexer with six resonators, and use a single antenna. 73, Eric Lemmon WB6FLY (and GMRS KAF4211) -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of CHRIS ELEYETTE Sent: Sunday, March 05, 2006 5:33 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] portable antenna suggestions hey all, I'm looking for suggestion on a gmrs portable field antenna that can be used for field sar operations. Everyone has their gmrs license and the repeater is approved for gmrs.So I'm thinking of using two antennas instead of a duplexer. Any thoughts? thanks, chris __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com 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] Remote base radio help...
-Original Message- From: n2len [EMAIL PROTECTED] Subj: [Repeater-Builder] Remote base radio help... Date: Tue Feb 7, 2006 2:03 pm Size: 1K To: Repeater-Builder@yahoogroups.com Hello, I am presently hooking ua remote base radio to my vxr5000. The 5000 COS needs a contact closure to make function. I am using a ICOM 207 via 6 pin mini din for signaling. I have used a 2N transistor set up as a open collector output circuit to trigger the COS on the 5000 repeater. Diagram: Base---ICOM207 Squelch Output to 4.7K resistor to base leg of transistor CollectorFeeds COS pin on VERTEX VXR5000 EmitterGND Now the link radio only works one way when I switch it on. When the 5000 transmits the link radio keys up and sends audio to the other machine. But when the other machine keys up nothing back. The link radio receives the signal but it dosent throw the 5000 into transmit. So I am thinking I have a COS problem with the transistor circuit I built. So my question is. Do I need this transistor circuit to activate COS on the repeater or can I just wire the Squelch output of the 207 directly to the COS pin on the VXR5000. Is the ICOM207 logic level at the mini din. I know that this is specific information to my situation, but I figured to ask anyway. Thanks *** From Kb2jpd: Well, you really need to see what the VXR is expecting to see as a COS: open collector , voltage level or actually a logic level. Second, that transistor will work as a switch but you should see first if it is working like that or if you have to add a biasing circuit. Dang, this is worse than modding Motorola Micors without documentation. Adam Kb2jpd 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/
