Re: [Repeater-Builder] Duplexer story update
In order to do a meaningful calculation, I would have to know the type of dielectric in the coax to determine the velocity factor. The VF will be less than one. 73 Glenn WB4UIV At 07:36 PM 10/01/04, Tim S. wrote: >Thanks to all the help here and repeater-builder.com I got it figured out. > >Quite interesting actually. > >I verified the input to the duplexer had 42 watts by using a coupler on the >duplexer input cable and hooking it up to my service monitor. > >And hooked it all back up and I had 42 watts into the service monitor >measuring the duplexer output. > >So 42 watts in and 22 watts out was -2.8 db loss. > >Next I checked the antenna reflected power with a bird. Bare with me here >because the bird readings are vastly different then my recently calibrated >monitor. > >The ant showed 38 out and 1/2 watt back with the bird. Pretty good. > >So I checked the input to the duplexer. 65 watts out 12 back. Not good. (I >guess) I say I guess here because changing the length of the duplexer input >cable seems to affect it. > >I decided to check the duplexer tuning once again and pulled the unit. >Retuned the plungers all the way up and down and could not find a better >peak. Reset the notches and reinstalled. > >Same kind of readings as before. > >Then I tried a new cable from the TX to the duplexer input that I had. It >just happened to be about 3 inches longer than the original. > >That gave me on the bird 65 out and 1 back on the antenna. > >The service monitor showed 32.5 watts out of the duplexer. Reverified the >42w into the duplexer on the new cable. > >For a total insertion loss of -1.1 db. > >Also rechecked the densense and could not measure any. > >Now for a homework assignment. The original *bad* cable is 24 inches long. >And the TX freq is 483.0875Mhz. So what wavelength would that be that >caused the problem. And I assume it is the original cable when the repeater >was installed 25+ years ago. Was it always wrong or did it not effect the >original duplexer the same?... > >Thanks again! > >-Tim > > > > > > > > > > >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] Duplexer story update
Thanks to all the help here and repeater-builder.com I got it figured out. Quite interesting actually. I verified the input to the duplexer had 42 watts by using a coupler on the duplexer input cable and hooking it up to my service monitor. And hooked it all back up and I had 42 watts into the service monitor measuring the duplexer output. So 42 watts in and 22 watts out was -2.8 db loss. Next I checked the antenna reflected power with a bird. Bare with me here because the bird readings are vastly different then my recently calibrated monitor. The ant showed 38 out and 1/2 watt back with the bird. Pretty good. So I checked the input to the duplexer. 65 watts out 12 back. Not good. (I guess) I say I guess here because changing the length of the duplexer input cable seems to affect it. I decided to check the duplexer tuning once again and pulled the unit. Retuned the plungers all the way up and down and could not find a better peak. Reset the notches and reinstalled. Same kind of readings as before. Then I tried a new cable from the TX to the duplexer input that I had. It just happened to be about 3 inches longer than the original. That gave me on the bird 65 out and 1 back on the antenna. The service monitor showed 32.5 watts out of the duplexer. Reverified the 42w into the duplexer on the new cable. For a total insertion loss of -1.1 db. Also rechecked the densense and could not measure any. Now for a homework assignment. The original *bad* cable is 24 inches long. And the TX freq is 483.0875Mhz. So what wavelength would that be that caused the problem. And I assume it is the original cable when the repeater was installed 25+ years ago. Was it always wrong or did it not effect the original duplexer the same?... Thanks again! -Tim 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: highest repeater site
I used to work with a real bad pot-head. He'd climb to the top of a tower and smoke up a storm. Would he qualify the site as the highest repeater? He did good enough work, just took 3 times as long and you had to eat pizza after every job. No one said anything because he'd climb the tall unsafe towers that most of the crew wouldn't trust... or would be to fat to get climb. cheers skipp www.radiowrench.com > Bob Dengler <[EMAIL PROTECTED]> wrote: > At 10/1/2004 05:12 AM, you wrote: > >I believe the highest in Colorado (off the top of my head) would be the > >Pikes Peak machines. > >146.970, and 448.450 at 14,109 feet above mean sea level. > > Are you sure they're actually at Pike's Peak. I didn't find anything up > there when I was in the area last year. > > Bob NO6B 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] highest repeater?
At 10/1/2004 02:38 PM, you wrote: >Randy & Karen Long wrote: > > >Rob et al, > > > >I just got off the air with one of the clubs officers from PPRA and their > >repeaters are indeed inside the summit shack of Pikes Peak. Actual elevation > >of the base of the antenna is estimated to be 14,120'. > > > > > >For what its worth > > > >Randy, W0AVV > > > > >I believe the reason Bob didn't see it, is that the shack is back from >the front of the summit and the visitor's center -- behind the visitor >parking lot. It is loaded with a number of antennas, including at least >one small microwave dish. Acutually I never made it to the top, but got within a mile or so at the 13,000 ft. level. They were just finishing off grading the last mile when I ran out of time & had to head back home (this was a stop on the way back from Dayton '03). I didn't find anything up there in any of the local or ARRL repeater guides, or via scanning the band so I assumed the PPRA had no repeaters up there. Otherwise I would have tried accessing them during my approach from Kansas. Maybe I'll make it to the top next year. I wish Dayton was a couple of weeks later so there would be a little more time for the snow to melt. Bob NO6B 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] highest repeater?
Randy & Karen Long wrote: >Rob et al, > >I just got off the air with one of the clubs officers from PPRA and their >repeaters are indeed inside the summit shack of Pikes Peak. Actual elevation >of the base of the antenna is estimated to be 14,120'. > > >For what its worth > >Randy, W0AVV > > I believe the reason Bob didn't see it, is that the shack is back from the front of the summit and the visitor's center -- behind the visitor parking lot. It is loaded with a number of antennas, including at least one small microwave dish. Never been in there myself, but went "eyeball hunting" for it, as I knew the 146.97 is up there. This was last summer when my wife (Karen KC0KTI) and I had VK2YX and family up there, depriving them of oxygen while we shared some of the famous homemade donuts and coffee at the visitor's center.. We just happened to hit one of those gorgeous days where (even though the wind was blowing about 30 kts continuous) the sky was clear blue. Pete's comment was, "I can see the curvature of the Earth from up here, mate!" Yes indeed! I think that was the first time I'd noticed that too. We did our best to create some co-channel interference (heh... worked repeaters 100 miles away with HT's) and a little simplex goofing off -- then came down after a lovely day. They slept all the way down... How come all my friends from out of town pass out when I take them to tower sites around here? ;-) ;-) ;-) Nate WY0X 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] highest repeater?
Rob et al, I just got off the air with one of the clubs officers from PPRA and their repeaters are indeed inside the summit shack of Pikes Peak. Actual elevation of the base of the antenna is estimated to be 14,120'. For what its worth Randy, W0AVV 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] Setting the squelch
Hi All, I have rescently set the squelch level of a base stn on the bench using a Marconi test set. Once installed at site the level was wrong due to losses in the cavity filtersAny ideas please ? Cheers Dave 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: Triple Posts?? INFO
At 07:00 AM 10/1/04, you wrote: >On Thu, 30 Sep 2004 15:54:40 -0700 Murphy <[EMAIL PROTECTED]> writes: > >Anyone else on this list getting triple posts? > >Only a 'select few' -- it's been happening for about a week, >across many Y!groups, and appears to affect folks who've newly-subscribed >-or- made address changes. Their info has been duplicated in the member >lists > >So far, attempts to remove "extra" address listings have resulted in the >removal of "all" entries for that member. >It's a Yahoo thing, and List Owners have NO real control -- Pending a >fix, the best opinions offered elsewhere is to ride it out... Or unsubscribe and immediately resubscribe. Mike WA6ILQ 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] highest repeater?
At 10/1/2004 05:12 AM, you wrote: >I believe the highest in Colorado (off the top of my head) would be the >Pikes Peak machines. >146.970, and 448.450 at 14,109 feet above mean sea level. Are you sure they're actually at Pike's Peak. I didn't find anything up there when I was in the area last year. Bob NO6B 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: Triple Posts?? INFO
[EMAIL PROTECTED] wrote: > > > On Thu, 30 Sep 2004 15:54:40 -0700 Murphy <[EMAIL PROTECTED]> writes: > >> Anyone else on this list getting triple posts? > > > Only a 'select few' -- it's been happening for about a week, > across many Y!groups, and appears to affect folks who've newly-subscribed > -or- made address changes. Their info has been duplicated in the member > lists > Well, neither of those applies to me, so that blows that... > So far, attempts to remove "extra" address listings have resulted in the > removal of "all" entries for that member. > It's a Yahoo thing, and List Owners have NO real control -- Pending a > fix, the best opinions offered elsewhere is to ride it out... > Yeah, I figured that. They really are pretty incompetant. I keep getting put into 'bounce' status for no reason. Sent them many emails, each one nastier than the last, to no avail. -- Jim Barbour WD8CHL 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] ge CARD RACKS
Ted Bleiman K9MDM - MDM Radio wrote: ( AND YES I AM SHOUTING,,,MY HEARING IS GOING SO I > HAVE TO) MDM RADIO LTD 708-681-0300 > Turn up your volume-I can't hear you! ;c} -- Jim Barbour WD8CHL 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] Manual Exchange
FREE!! MANUAL_EXCHANGE A new email list for exchange of and help with locating manuals for your radio or service equipment. We are looking for new members to join in the spirit of cooperation in sharing technical and operational information for all brands of radio and service equipment. http://groups.yahoo.com/group/Manual_Exchange/ Thanks to the owner and members of this group for your time. 73' John KD5INM 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: Triple Posts?? INFO
On Thu, 30 Sep 2004 15:54:40 -0700 Murphy <[EMAIL PROTECTED]> writes: >Anyone else on this list getting triple posts? Only a 'select few' -- it's been happening for about a week, across many Y!groups, and appears to affect folks who've newly-subscribed -or- made address changes. Their info has been duplicated in the member lists So far, attempts to remove "extra" address listings have resulted in the removal of "all" entries for that member. It's a Yahoo thing, and List Owners have NO real control -- Pending a fix, the best opinions offered elsewhere is to ride it out... 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] highest repeater?
I believe the highest in Colorado (off the top of my head) would be the Pikes Peak machines. 146.970, and 448.450 at 14,109 feet above mean sea level. Chuck n0nhj mch wrote: The HIGHEST repeater I can think of would be in Colorado, or the Rocky Mountain chain somewhere. I'm sorry this doesn't answer your question, but I bet it helps others understand what the question is. :-) Of course, an OSCAR unit would be the highest repeater, but that's not just limited to the USA. Joe M. Doug Strobel-KB3HAM wrote: Hello all me and a buddy wer talking and sounthing came up. Does anyone by any chance no what the hiest elavation repeater is or was in the us?. 2m , 70cm what ever thanks alot for the help in answering my strange question 73 Doug Strobel kb3ham 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/ 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] Re: Celwave PD200 Repair
I have three PD220 152 to 159 range in very good shape, and one NEW PD200 152.6, these are waiting for a good home. Available in the Los Angeles area. 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] Celwave PD200 Repair
At 01:25 PM 9/30/04, you wrote: >Attention: Mike, WA6ILQ, Gary, K2UQ, and Randy, W0AVV > >Hello All: > >We finally took the 220 antenna apart, and it was an education. I would >like to share our experiences with you. > >First, depending on the vintage of the antenna production, these >antennas may be assembled and disassembled differently. I have looked >at some other Stationmaster type antennas, and there are some >construction variations, however my pictures and comments only concern >this particular model. > >This antenna as I previously mentioned had been up on a tower for a >considerable time, and it was broken (and repaired poorly) about a foot >and a half from the top earlier in its' life. This repair job probably >resulted in the eventual failure and extreme difficulty taking it apart >for trouble shooting and repair. > >Mike, if I could Email the Jpeg pictures to you and make them available >elsewhere, then others can easily see the construction and problems that >can occur with this type antenna. Please do - send them to wa6ilq at arrl dot net >In the photo of the antenna tip, there is one allen screw holding the >last antenna element in place. This allen screw goes through the brass >tip which is epoxyed to the fiberglass tube and pinches against the top >element. This allen screw has to come out in order for the whole >element assembly to come out FROM THE BOTTOM of the aluminum antenna >base. There was no heat necessary. > >There are three countersunk screws at the top of the aluminum tube base >where the fiberglass tube meets the aluminum tube. They need to come >out. These screws hold the circular brass doughnut connected to the >internal brass tube part of the internal antenna. Please note that >epoxy covers these screws, so you need to scrape the epoxy away very >well to get at the allen head, and be careful not to strip the head with >the allen wrench! Using WD-40 around each of the three screw rims >carefully helped in removing them. Also, the fiberglass is never >separated from the aluminum base tube. > >Next is a killer. This is the doughnut sandwich where the SO-239 UHF >connector is mounted. The way this connector assembly is held in place >is by tightening the three 1/4 inch bolts and compressing the two >circular (inside the aluminum base tube) plates together with a rubber >bushing or doughnut inside. This rubber bushing expends, and prevents >the the inside guts or antenna stacking assembly from sliding out. > >What made it so difficult sliding this assembly out of the tube bottom >was the two plates were rusted and corroded very badly. One of the >three bolts broke because the inside end was frozen. We sprayed WD-40 >around the inside perimeter so it would slide out easily, but it fought >us all the way. We had to make up a plate with holes to place at the >antenna base tube, and use the two remaining bolts holes to mechanically >screw out the assembly. > >The pictures show the center conductor break in the bottom element. The >center conductor of this element needs to be replaced. Also, the two >sandwich plates are extremely corroded and need to be replaced. One of >the pictures displays the foam spacers used to hold the elements in >place throughout the fiberglass tube. We also noted there was no bees >wax in the tube, only the foam spacers. > >We have investigated the Polane T Plus epoxy for the fiberglas repair, >and the index needs to be updated. The prices are out of sight as well >as the minimum quantity. There are other solutions, but this is a >separate story. > >I assume there are lots of these antennas out in the field, and they >could be modified and/or repaired for amateur radio repeater use. This >above information might help you make a decision to buy a new one or >modify or fix a free bee. > >Have fun. Ciao, Tony, K3WX > > > > > > >Tony Faiola wrote: > > > > [EMAIL PROTECTED] wrote: > > > > > > The epoxy sealing the three recessed screws on 120 deg centers near the > > > aluminum mounting tube meets the fiberglass must be removed. > > > > I have removed these three allen head screws, however the epoxy is > > wedged between the aluminum and the fiberglass. Will heating the > > aluminum near the fiberglass loosen the physical connection? > > > > The set screw at top > > > must be removed and the tip heated with heat gun. Cap will come off. > Don't > > > overheat fiberglass. The complete antenna then can be removed from > the fiberglass > > > tube. > > > > I did remove the allen head screw from the top metal tip. With a little > > WD-40 on the tip (no heat necessary) the one foot of broken fiberglass > > pulled out of the tip and exposed the one foot of copper element. It is > > important to note that the metal tip separates into two pieces. After > > the allen screw is taken out, the center of the tip separates from the > > collar portion of the tip. This collar portion of the tip is fastened > > by epoxy to the fiberglass tube at t
