Re: [Repeater-Builder] coaxial collinear
On Thursday 07 October 2004 06:47 pm, Kevin Custer wrote: > Correct. Plus, it *can* be longer than 1/4 wave. Many > commercial manufacturers actually use the large aluminum > mounting tube at the bottom of the antenna for the > decoupling sleeve. Thanks. > About 20 years ago Radio Shack sold some poorly shielded > RG-8 with a solid dielectric. This stuff works well for > the dielectric and center conductor for antenna projects, > besides, the shielding was junk anyway. I remember that stuff; used to have a bunch of it but threw it out a few years ago. I looked around the local area for some after you mentioned this a while back, but came up empty handed. Finally I discovered most of the stuff I'd already tried without success will fit if it's put in the freezer for an hour. :) I got distracted today, but hopefully I will get this antenna finished and tested tomorrow. If this works like I think it will I'll be building a few more. Paul 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: coaxial collinear
> About 20 years ago Radio Shack sold some poorly > shielded RG-8 with a solid dielectric. This stuff > works well for the dielectric and center conductor > for antenna projects, besides, the shielding was > junk anyway. Not if you used it for radiax... :-) skipp ps: I still have some of that coax still around in a pile somewhere... 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] coaxial collinear
Paul Kelley wrote: >I finally got around to constructing my first coaxial >collinear as per: > >http://www.repeater-builder.com/antenna/wa6svt.html > >(and using a few of Kevin's ideas) > >I have a question for those who have built these. Referring >to step 9 and figure 4, I assume the decoupling sleeve >connects a *true* (free space) quarter wave down from where >the feedline connects to the first half wave element? > Correct. Plus, it *can* be longer than 1/4 wave. Many commercial manufacturers actually use the large aluminum mounting tube at the bottom of the antenna for the decoupling sleeve. >Something I've discovered which may be of use to other >antenna builders... I had trouble finding coax guts that >would fit inside the K&S 5/16" tubing. Most of it was just >a little too tight to be forced into the tubing. Then I >discovered if you chill the coax guts in the freezer for >about 30 minutes it shrinks enough to slip in! It's still >snug but it'll go in. It then becomes *very* tight after it >warms up, and probably cannot be easily removed. Using this >technique, Belden 8237 and 8267 is usable for solid >dielectric designs, 8214 for foam. Actually most 8214 can >be forced through without being chilled. I found one NOS >piece of 8267 that fits without being chilled, but the new >stuff doesn't (at least not the two pieces I ordered from >different suppliers as a test -- your results may vary, >considering construction tolerances for both the coax and >the brass tubing may cause unpredictable variations). > >Paul N1BUG > About 20 years ago Radio Shack sold some poorly shielded RG-8 with a solid dielectric. This stuff works well for the dielectric and center conductor for antenna projects, besides, the shielding was junk anyway. Kevin 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] Does the R100 need duplexer if using two anetnnas?
At 12:46 PM 10/7/04, you wrote: >Dakota Summerhawk wrote: > > > > I have a UHF R100 and need to know if I need a duplexer if I am going to > > be using two antennas. Can someone help? > > Thanks > > Dakota > >oh my...uh...the purpose of a duplexer is to combine a transmitter >and receiver to one antenna so that they can operate simultaneously. >Sooo, that would be a no... >-- >Jim Barbour >WD8CHL Actually I have seen several cases where the "T-cable" in the middle was removed and two antennas plugged in. In some cases the RX antenna has been someone elses with a multicoupler added. 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] coaxial collinear
I seen one once built for 11M. back in the 1970's used either a 1/4 or 1/2 wave of some coax and had to be precise it was spliced by a barrell connector, it was called the cobra coil. It never worked for me just a waste of time. MH - Original Message - From: "Paul Kelley" <[EMAIL PROTECTED]> To: Sent: Thursday, October 07, 2004 12:00 PM Subject: [Repeater-Builder] coaxial collinear > > I finally got around to constructing my first coaxial > collinear as per: > > http://www.repeater-builder.com/antenna/wa6svt.html > > (and using a few of Kevin's ideas) > > I have a question for those who have built these. Referring > to step 9 and figure 4, I assume the decoupling sleeve > connects a *true* (free space) quarter wave down from where > the feedline connects to the first half wave element? > > > Something I've discovered which may be of use to other > antenna builders... I had trouble finding coax guts that > would fit inside the K&S 5/16" tubing. Most of it was just > a little too tight to be forced into the tubing. Then I > discovered if you chill the coax guts in the freezer for > about 30 minutes it shrinks enough to slip in! It's still > snug but it'll go in. It then becomes *very* tight after it > warms up, and probably cannot be easily removed. Using this > technique, Belden 8237 and 8267 is usable for solid > dielectric designs, 8214 for foam. Actually most 8214 can > be forced through without being chilled. I found one NOS > piece of 8267 that fits without being chilled, but the new > stuff doesn't (at least not the two pieces I ordered from > different suppliers as a test -- your results may vary, > considering construction tolerances for both the coax and > the brass tubing may cause unpredictable variations). > > Paul N1BUG > > > > > > > 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] Dish network
Like any other hack you may find epoxy dipped PC and a self destruct circuit and no one has a plan on the site. I pay for my Dish Service why do you think that phone line circuit is for ? X amount of use without and the RCVR probably locks up or shuts down. I presume they engineered that way. MH - Original Message - From: "JOHN MACKEY" <[EMAIL PROTECTED]> To: Sent: Thursday, October 07, 2004 3:48 PM Subject: [Repeater-Builder] Dish network > > OK, I know this is off-topic, but this is one of the most technically > competant groups I know of. > > I need to talk to anyone who has had experiencing doing customization and/or > modification of DISH Network satellite receiving equipment. Perhaps these are > questions and experienced hacker could answer well. > > Please contact me off-list: [EMAIL PROTECTED] > > thanks > > > > > > > > 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] Re Circulator
Hi Russ Not running a duplexer, circulator feeds into seperate rx/tx cavities, this arrangement has been used on several UK repeaters, the circulator is a 3 port ferrite unit. Sensitivity appears to be good but I was just curious to see if it could be improved and noticed this anomaly. Regards Andy - Original Message - From: "russ" <[EMAIL PROTECTED]> To: Sent: Thursday, October 07, 2004 9:57 PM Subject: Re: [Repeater-Builder] Re Circulator > > Should not your circulator be on the transmit side before the duplexer? > All of mine are. > 73 Russ, W3CH > 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 Circulator
Hi Russ Not running a duplexer, circulator feeds into seperate rx/tx cavities, this arrangement has been used on several UK repeaters, the circulator is a 3 port ferrite unit. Regards Andy - Original Message - From: "russ" <[EMAIL PROTECTED]> To: Sent: Thursday, October 07, 2004 9:57 PM Subject: Re: [Repeater-Builder] Re Circulator > > Should not your circulator be on the transmit side before the duplexer? > All of mine are. > 73 Russ, W3CH > 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: filter question
rtoplus wrote: > Hi Steve > > I haven't had a chance to remove the pre-amp. Here's the story... > > My handy-dandy motorola tech came to the site about 3 months ago > to "help". He told me I had about 6db-10db of desense according to > his zillion dollar service monitor. He was wanting to sell me a > used Celwave 5042-1 duplexer he had. He offered it to me for a good > price...$600.00 so I bit and we hooked it up and tuned it. I wouldn't call that a good price for a used duplexer, especially since it obviously didn't work. I also suspect that, like most, he is not really a Motorola tech, but works for an independant dealer who services motorola (MSS). You will find widely varying degrees of competance, just as with any two-way radio shop. There are not as many *real* Motorola techs out there as one might think. Most are MSS's. -- 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] Re Circulator
Should not your circulator be on the transmit side before the duplexer? All of mine are. 73 Russ, W3CH - Original Message - From: "Andy Hearn" <[EMAIL PROTECTED]> To: Sent: Thursday, October 07, 2004 1:07 PM Subject: [Repeater-Builder] Re Circulator > > > HI > I have just changed my 70 cm repeater antenna over to a co-linear 8 > dBd gain, was running 2 full wave dipoles stacked (reason..antenna > faults and not able to mount with correct vertical spacing). > > When I was calibrating the circulator on the bench, all set up > perfectly, with the receive port being sharp in its setting. > > On site since the antenna was running a slightly higher VSWR > compared to a dummy load (1.2:1), I thought it might be an idea to > just tweak the receive port to optimise the rejection. However I > found the tuning to be very flat, question, is this normal or am I > missing something? > 73 > Andy G3UEQ > > > > > > > > > > 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] Re: Help in locating a DB-408 for the ham band
Skipp, Huh! I am in Sacramento right now for the Pacific Bantam Austin Club car show and meet running through Saturday in Old Sacramento Riverfront park or something like that. Yes, it seems all my hobbies are expensive! What repeaters are in the area, I have 2 meters and 440 available. Paul WB5IDM -Original Message- From: skipp025 [mailto:[EMAIL PROTECTED] Sent: Wednesday, October 06, 2004 4:08 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Help in locating a DB-408 for the ham band Metro Sacramento because you've never heard of Elmira California. skipp www.radiowrench.com > Neil McKie <[EMAIL PROTECTED]> wrote: > > Where in northern California? > > Reno is about 7 hours from here ... > > Neil > > skipp025 wrote: > > > > Tom, > > > > I'm not sure of the exact model number... but I do > > have a ham band designed and spec'd decibel UHF dual > > 2-section 408 antenna. The model with two 408's > > stacked and it's a real nice monster. > > > > Do you need the measurements for the harness > > or some other item spec? > > > > I'd sell it, but shipping would be expensive, > > so a pickup in Northern CA would be the most > > practical answer. Email me direct if you're > > interested. > > > > cheers, > > skipp > > skipp025 at yahoo.com > > > > Original Message - > > > From: "tgundo2003" > > > To: > > > Sent: Tuesday, October 05, 2004 11:43 PM > > > Subject: [Repeater-Builder] Help in locating a > > > DB-408 for the ham band > > > > > > > > As per recommendations on this group I have settled > > > > on a DB-408 for my new UHF repeater project. My problem > > > > is I keep running into dead ends in locating one, new > > > > or used, to buy cut for the ham band. I talked to Andrews > > > > to see if I could persuade them to build me a one- > > > > off for 440 but hey wouldn't. Can anyone help me out > > > > before I have to settle for a "stick" antenna? I have also > > > > looked at the Maxrad open dipole model which I can get > > > > for 440, but it seems like a bad deal, its as much as a > > > > DB-408 new. The Sinclair is just too much $$ for th > > > > budget. I want to get this project done before it gets > > > > really cold here in Chicago. Please feel free to contact > > > > me off the list with any > > > > info you may have. > > > > [EMAIL PROTECTED] > > > > > > > > Thanks!!! > > > > > > > > Tom > > > > W9SRV > > > > > > Yahoo! Groups Links > > > > > > > > Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Help in locating a DB-408 for the ham band
I have always used the DB-410 in the commercial band and have had great luck with them. Don't worry unless you are a lot lower than 440 in frequency. Paul -Original Message- From: tgundo2003 [mailto:[EMAIL PROTECTED] Sent: Tuesday, October 05, 2004 10:44 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Help in locating a DB-408 for the ham band As per recommendations on this group I have settled on a DB-408 for my new UHF repeater project. My problem is I keep running into dead ends in locating one, new or used, to buy cut for the ham band. I talked to Andrews to see if I could persuade them to build me a one- off for 440 but hey wouldn't. Can anyone help me out before I have to settle for a "stick" antenna? I have also looked at the Maxrad open dipole model which I can get for 440, but it seems like a bad deal, its as much as a DB-408 new. The Sinclair is just too much $$ for th budget. I want to get this project done before it gets really cold here in Chicago. Please feel free to contact me off the list with any info you may have. [EMAIL PROTECTED] Thanks!!! Tom W9SRV 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] Intermod problem? Yes!
Q wrote: > It is,its 40 miles away in a different state! Local machines > are146.01/.61,146.04/.64,146.10/.70146.16/.76,146.22/.82, > 147.90/.30,147.87/.27(mine) and 147.99/.39.Also 224.92 and > 448.375/443.375(mine).The only uncoordinated one is 147.30. > Gonna try a low pass filter on the 146.70 tx and see if it helps any. > - Original Message - > From: mch <[EMAIL PROTECTED]> > To: > Sent: Sunday, October 03, 2004 7:11 PM > Subject: Re: [Repeater-Builder] Intermod problem? Yes! > > > >>By that statement, you are saying that the 146.670 repeater is >>coordinated? If so, what is the callsign and location? eMail me >>privately if you wish. >> >>Joe M. >> The uncoordinated aspect of this is irrelevant, since he never mentioned status until it was brought up by mistake. There is no reason to not coordinate these. We had 146.625 and 147.225 here within 2 miles. There was intermod into the 147.225 rx, but the equipment was very early vintage Spectrum. Nuff said. Rather than fix it, it just went away. Oh, and btw, listing repeater freqs as input/output has been the standard since the late 60's. -- 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] Maxtrac conversion to 220?
Along similar lines, has anyone ever tried upgrading the Maxtrac to 99 CH? There was a special model made by Motorola to do that, but I think it was a Low Band model. The problem is that the firmware is almost impossible to find and the software (RSS) is even more difficult. Joe M. Jim B. wrote: > > [EMAIL PROTECTED] wrote: > > > Just wondering if anyone else has attempted to convert a vhf Maxtrac to > > 222mhz? I would be interested in the results. I was able to get the > > receiver to go > > up and meet original specs easily. Even the exiter went easily. The pa seems > > to be my biggest hurdle. Hoped someone else may had broken this ground > > before. > > I am going to install one now as our repeater receiver. I would also like to > > replace our transmitter with one in the future. > > > > Thanks, > > Glenn W8AK > > > > First question-how did you get it programmed? > Then the next hurdle would be the VCO... > > -- > Jim Barbour > WD8CHL > > > 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] Dish network
OK, I know this is off-topic, but this is one of the most technically competant groups I know of. I need to talk to anyone who has had experiencing doing customization and/or modification of DISH Network satellite receiving equipment. Perhaps these are questions and experienced hacker could answer well. Please contact me off-list: [EMAIL PROTECTED] thanks 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] Maxtrac conversion to 220?
[EMAIL PROTECTED] wrote: > Just wondering if anyone else has attempted to convert a vhf Maxtrac to > 222mhz? I would be interested in the results. I was able to get the receiver > to go > up and meet original specs easily. Even the exiter went easily. The pa seems > to be my biggest hurdle. Hoped someone else may had broken this ground > before. > I am going to install one now as our repeater receiver. I would also like to > replace our transmitter with one in the future. > > Thanks, > Glenn W8AK > First question-how did you get it programmed? Then the next hurdle would be the VCO... -- 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] Re: highest repeater site
Leon Ingerick wrote: > Is there a repeater on the space station? > > That's gotta about as high as you can get I would > think.. > > I wonder if it is a Mastr-Pro or a ?? > > > Leon-N2HLT > There used to be, but it was cross-band, so it was likely a dual-band ham rig? heh- a mastr pro would almost draw more current than the whole rest of the station...at least it seems like it. -- 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] Does the R100 need duplexer if using two anetnnas?
Dakota Summerhawk wrote: > > I have a UHF R100 and need to know if I need a duplexer if I am going to > be using two antennas. Can someone help? > Thanks > Dakota > oh my...uh...the purpose of a duplexer is to combine a transmitter and receiver to one antenna so that they can operate simultaneously. Sooo, that would be a no... -- 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] Wanted 30-36mhz MastrII PA
Hello All, I'm looking for a continuous duty, large style heat sink (not a mobile) GE MastrII PA for a 10 meter project that I'm working on. I doubt that anyone has a 25-30mhz laying around so the 30-36mhz would do just fine. Please contact me off list with particulars. Thanks! Adam N2ACF [EMAIL PROTECTED] 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 Circulator
HI I have just changed my 70 cm repeater antenna over to a co-linear 8 dBd gain, was running 2 full wave dipoles stacked (reason..antenna faults and not able to mount with correct vertical spacing). When I was calibrating the circulator on the bench, all set up perfectly, with the receive port being sharp in its setting. On site since the antenna was running a slightly higher VSWR compared to a dummy load (1.2:1), I thought it might be an idea to just tweak the receive port to optimise the rejection. However I found the tuning to be very flat, question, is this normal or am I missing something? 73 Andy G3UEQ 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: Motorola Radius/GM300 - Email found in subject - Email found in subject
Ok Scott, thanks for the info. Ill see what I get out of the exciter connection before the PA and see what it's at. Kevin -Original Message- From: wn1b8 [mailto:[EMAIL PROTECTED] Sent: Thursday, October 07, 2004 12:02 PM To: Repeater-Builder@yahoogroups.com Subject: [SPAM] - [SPAM] - [Repeater-Builder] Re: Motorola Radius/GM300 - Email found in subject - Email found in subject --- In Repeater-Builder@yahoogroups.com, "Kevin Bednar" <[EMAIL PROTECTED]> wrote: > Scott, > After you pulled and bypassed the final, what was the lowest power you > could get out of it while still being stable? I'm thinking about doing > the same to a VHF maxtrac to use as an exciter for a cont duty PA, but > it only needs about 400mw to drive it to full output. Thanks. > > Kevin > K2KMB > Hi Kevin, That is a very good question. I didn't try adjusting the PO as it fell right about where I wanted it. I received the service manual and schematic for it yesterday and had just a few minutes to look it over last night. It would appear that the 1-10 watt version is basically what I have made, the 45 watt PA up through the driver, which is now the final. Same transistor but a few capacitor value changes. If this is the case, Motorola rates this as a 1 to 10 watt radio. I would think you should be able to lower it to 1 watt. You may have to go back a stage to get your 500 mW. I seem to recall someone else's post that indicated thay had used the input to the PA module which gave them 700 mW. You might want to look for this post. 73, Scott Madison, WN1B 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/
[SPAM] - [Repeater-Builder] Re: Motorola Radius/GM300 - Email found in subject
--- In Repeater-Builder@yahoogroups.com, "Kevin Bednar" <[EMAIL PROTECTED]> wrote: > Scott, > After you pulled and bypassed the final, what was the lowest power you > could get out of it while still being stable? I'm thinking about doing > the same to a VHF maxtrac to use as an exciter for a cont duty PA, but > it only needs about 400mw to drive it to full output. Thanks. > > Kevin > K2KMB > Hi Kevin, That is a very good question. I didn't try adjusting the PO as it fell right about where I wanted it. I received the service manual and schematic for it yesterday and had just a few minutes to look it over last night. It would appear that the 1-10 watt version is basically what I have made, the 45 watt PA up through the driver, which is now the final. Same transistor but a few capacitor value changes. If this is the case, Motorola rates this as a 1 to 10 watt radio. I would think you should be able to lower it to 1 watt. You may have to go back a stage to get your 500 mW. I seem to recall someone else's post that indicated thay had used the input to the PA module which gave them 700 mW. You might want to look for this post. 73, Scott Madison, WN1B 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] coaxial collinear
I finally got around to constructing my first coaxial collinear as per: http://www.repeater-builder.com/antenna/wa6svt.html (and using a few of Kevin's ideas) I have a question for those who have built these. Referring to step 9 and figure 4, I assume the decoupling sleeve connects a *true* (free space) quarter wave down from where the feedline connects to the first half wave element? Something I've discovered which may be of use to other antenna builders... I had trouble finding coax guts that would fit inside the K&S 5/16" tubing. Most of it was just a little too tight to be forced into the tubing. Then I discovered if you chill the coax guts in the freezer for about 30 minutes it shrinks enough to slip in! It's still snug but it'll go in. It then becomes *very* tight after it warms up, and probably cannot be easily removed. Using this technique, Belden 8237 and 8267 is usable for solid dielectric designs, 8214 for foam. Actually most 8214 can be forced through without being chilled. I found one NOS piece of 8267 that fits without being chilled, but the new stuff doesn't (at least not the two pieces I ordered from different suppliers as a test -- your results may vary, considering construction tolerances for both the coax and the brass tubing may cause unpredictable variations). Paul N1BUG 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: Help in locating a DB-408 for the ham band
> Neil McKie <[EMAIL PROTECTED]> wrote: > You are so correct - the only Elmira I was aware of is just west > of Eugene, Oregon. There are many Elmira's across the US, including the more famous NY Elmira. Many of you know about Travis Air Force Base. Draw a 2 mile circle around it, just to the northeast is Elmira, to the north Vacaville, the to the west Fairfield. Most of the mentioned towns were sleepy little < 10,000 type places. Everything is 120,000 plus and all jammed up, town border to border. Travis AFB puts many a large aircraft right over us at less than 1500 ft... as we are in the pattern for regular runway downwinds. I remember when the main interstate (I-80) was a sleepy two lane freeway called I-40, the Lincoln Star Highway. Don't be fooled by qrz stats. Emira is actually an old railroad stop... swallowed up by Vacaville and there are hundreds of Amateurs around in the Metro Area. If you get down this way, drop in for a cup of joe (not evil empire starbucks). We send every visitor home with a free Motrac or Pre-Progress radio. Even if you don't want it... :-) cheers skipp www.radiowrench.com > The map shows it as placed just south of I-80 & I-505 ... been > through your area on both freeways numerous times over the last 40 > years or so. Is about 12 hours from here ... depending where the > funny colored cars with the screwy lighting systems are hiding. > > I fondly remember when the now I-505 was but a two lane county road. > > According to www.qrz.com there are four amateurs living in / > around Elmira, California - Zip-Code 95625 > > 73, > Neil > > > skipp025 wrote: > > > > Metro Sacramento because you've never heard of > > Elmira California. > > > > skipp > > > > www.radiowrench.com > > > > > Neil McKie <[EMAIL PROTECTED]> wrote: > > > > > > Where in northern California? > > > > > > Reno is about 7 hours from here ... > > > > > > Neil > > > 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] Celwave PD200 Repair
In addition to my last posting, I forgot to mention one point concerning the base sandwich. Besides the metal plates having the three holes for the clamping 1/4 inch bolts and the UHF female connector, it has an additional open hole straight through the sandwich. This is the weep hole to leak out any moisture that would collect in the base aluminum tube. The way this antenna is designed, we know that we would never use it upside down for the obvious reason mentioned above. Ciao, Tony, K3WX 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: Help in locating a DB-408 for the ham band
You are so correct - the only Elmira I was aware of is just west of Eugene, Oregon. The map shows it as placed just south of I-80 & I-505 ... been through your area on both freeways numerous times over the last 40 years or so. Is about 12 hours from here ... depending where the funny colored cars with the screwy lighting systems are hiding. I fondly remember when the now I-505 was but a two lane county road. According to www.qrz.com there are four amateurs living in / around Elmira, California - Zip-Code 95625 73, Neil skipp025 wrote: > > Metro Sacramento because you've never heard of > Elmira California. > > skipp > > www.radiowrench.com > > > Neil McKie <[EMAIL PROTECTED]> wrote: > > > > Where in northern California? > > > > Reno is about 7 hours from here ... > > > > Neil > > > > skipp025 wrote: > > > > > > Tom, > > > > > > I'm not sure of the exact model number... but I do > > > have a ham band designed and spec'd decibel UHF dual > > > 2-section 408 antenna. The model with two 408's > > > stacked and it's a real nice monster. > > > > > > Do you need the measurements for the harness > > > or some other item spec? > > > > > > I'd sell it, but shipping would be expensive, > > > so a pickup in Northern CA would be the most > > > practical answer. Email me direct if you're > > > interested. > > > > > > cheers, > > > skipp > > > skipp025 at yahoo.com > > > > > > Original Message - > > > > From: "tgundo2003" > > > > To: > > > > Sent: Tuesday, October 05, 2004 11:43 PM > > > > Subject: [Repeater-Builder] Help in locating a > > > > DB-408 for the ham band > > > > > > > > > > As per recommendations on this group I have settled > > > > > on a DB-408 for my new UHF repeater project. My problem > > > > > is I keep running into dead ends in locating one, new > > > > > or used, to buy cut for the ham band. I talked to Andrews > > > > > to see if I could persuade them to build me a one- > > > > > off for 440 but hey wouldn't. Can anyone help me out > > > > > before I have to settle for a "stick" antenna? I have also > > > > > looked at the Maxrad open dipole model which I can get > > > > > for 440, but it seems like a bad deal, its as much as a > > > > > DB-408 new. The Sinclair is just too much $$ for th > > > > > budget. I want to get this project done before it gets > > > > > really cold here in Chicago. Please feel free to contact > > > > > me off the list with any > > > > > info you may have. > > > > > [EMAIL PROTECTED] > > > > > > > > > > Thanks!!! > > > > > > > > > > Tom > > > > > W9SRV > > > > > > > > > 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/
[Repeater-Builder] Re: Happy radio day! - Happy 10-4 Day ...
10-33, 10-44 ? Your calendar appears to be different revision than mine :) --- In Repeater-Builder@yahoogroups.com, "Mr. Edgar McKinney" <[EMAIL PROTECTED]> wrote: > What about the rest of the "Ten" codes? Like 10-7 or 10-33, or > 10-41... > > Neil McKie wrote: > > > Happy 10-4 day everyone ... ;) > > > > Neil - WA6KLA > > > > > > 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] Re: R100 PA blown
try motorola parts i.d. 800-422 4210 sometimes they have a cross for a part nolonger supplied.mdmjason mathis <[EMAIL PROTECTED]> wrote: I tried RF parts the lady said she had no info on the m25c19. Thanks though.--- In Repeater-Builder@yahoogroups.com, Mike WA6ILQ <[EMAIL PROTECTED]>wrote:> At 09:46 PM 10/5/04, you wrote:> > >Thanks very much. That may be the cap I am looking at it was actually on > >top of the base-emitter pins. Thanks for the reply I never expect it so quick.> >> >I still can't find any spec on the M25c19. In fact I can barely get> >any hits on it. Have you heard of replacing it with a MRF654. Or even> >better do you know of a supplier for the m25c19. I am trying to get> >this thing running so I can sell it. I am begining to think its more> >trouble than its worth. LOL I will get it eventually.> >> >Thank,> >Jason Mathis> >Kd5TJO> > Have you called RF Parts and asked? The only time they've not been> able to cross a RF transistor to a replacement for me was when I asked> about a final for an HT-200 UHF handheld...> > Look at http://www.rfparts.com especially at> http://www.rfparts.com/install.htmlYahoo! 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/ Ted Bleiman K9MDM MDM Radio Ltd - 1629-B N. 31 st Ave Melrose Park, IL 60160 708.681.0300 fax 708.681.9800 web http://www.mdmradio.com - See our website for "SPECIAL DEALS" Do you Yahoo!?vote.yahoo.com - Register online to vote today! 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.
Re: [Repeater-Builder] MULTIPLE EMAILS
I went to my group member section to find Lee ("Q") subscribed 3 times,
which I know he didn't do.
When I tried to unsubscribe the second and third subscription, it
totally deleted him from the list because the email address was the same
for all three subscriptions. I have manually sent Lee a subscription
invitation and apology, but there seems to be nothing we as moderators
or owners can do for this situation.
Damn Yahoo.
Kevin
Q wrote:
>Could some kind moderator look at my account and perhaps stop the flood of
>triplicate e-mails 484 in 5 days is a bit much...thanks!
>
>
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[Repeater-Builder] Re: R100 PA blown
I tried RF parts the lady said she had no info on the m25c19. Thanks though. --- In Repeater-Builder@yahoogroups.com, Mike WA6ILQ <[EMAIL PROTECTED]> wrote: > At 09:46 PM 10/5/04, you wrote: > > >Thanks very much. That may be the cap I am looking at it was actually on > >top of the base-emitter pins. Thanks for the reply I never expect it so quick. > > > >I still can't find any spec on the M25c19. In fact I can barely get > >any hits on it. Have you heard of replacing it with a MRF654. Or even > >better do you know of a supplier for the m25c19. I am trying to get > >this thing running so I can sell it. I am begining to think its more > >trouble than its worth. LOL I will get it eventually. > > > >Thank, > >Jason Mathis > >Kd5TJO > > Have you called RF Parts and asked? The only time they've not been > able to cross a RF transistor to a replacement for me was when I asked > about a final for an HT-200 UHF handheld... > > Look at http://www.rfparts.com especially at > http://www.rfparts.com/install.html 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/
