RE: [Repeater-Builder] Just a couple of dB loss you say?
I have always like mine: What is a db or two among friends? Thank you Joe LaGanga I am prepared to meet my Maker. Whether my Maker is prepared for the great ordeal of meeting me is another matter. -- Sir Winston Churchill (1874 - 1965) -Original Message- From: Com/Rad Inc. [mailto:[EMAIL PROTECTED] Sent: Friday, July 16, 2004 12:28 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Just a couple of dB loss you say? GENTLEMEN REMEMBER THE EQUATION 2 E = MC +/- 3dB - Original Message - From: "Neil McKie" <[EMAIL PROTECTED]> Sent: Friday, July 16, 2004 11:16 AM Subject: [Repeater-Builder] Just a couple of dB loss you say? > > The following is from a coffee cup I > got several years ago from > Allis - Northwest ... > a manufacturers representative > > "Just a couple of dB loss?" > > > > The effect of insertion loss on > transmitted power (dB to % loss) > > Loss % Loss % Loss % > dB Loss dB Loss dB Loss > > 0.1 2.28 1.7 32.4 3.3 53.2 > 0.2 4.50 1.8 33.9 3.4 54.3 > 0.3 6.67 1.9 35.4 3.5 55.3 > 0.4 8.80 2.0 36.9 4.0 60.2 > 0.5 10.9 2.1 38.3 5.0 68.4 > 0.6 12.9 2.2 39.7 6.0 74.9 > 0.7 14.9 2.3 41.1 7.0 80.0 > 0.8 16.8 2.4 42.5 8.0 84.2 > 0.9 18.7 2.5 43.8 9.0 87.4 > 1.0 20.6 2.6 45.0 10 90.0 > 1.1 22.4 2.7 46.3 11 92.1 > 1.2 24.1 2.8 47.5 12 93.7 > 1.3 25.9 2.9 48.7 13 95.0 > 1.4 27.6 3.0 49.9 14 96.0 > 1.5 29.2 3.1 51.0 15 96.8 > 1.6 30.8 3.2 52.1 20 99.0 > > > > > > > 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.
RE: [Repeater-Builder] East coast system?
There are a few variables in figuring this out, one is the actual path loss, which is 65db per mile, output power which is 53dbm, and then the sensitivity of the receiver on the other end, and most radios are in the -102 to -107dbm receive sensitivity. So with all this information you can figure out ground wave or at least get close. Just my $.02 worth. Thank you Joe N1EZO/8 I find television very educating. Every time somebody turns on the set, I go into the other room and read a book. -- Groucho Marx, 1890-1977 -Original Message- From: Don [mailto:[EMAIL PROTECTED] Sent: Sunday, June 06, 2004 4:16 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] East coast system? >It runs 200 watts to a 3 dbd omni at about 429' on the tower. > > Russ How Far in Miles can one Hear the 10 Meter Sig , Ground Wave not Skip . Thanks Don KA9QJG 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: Receiver Sensitivity
That value would be ok as long as it hears as far as it talks. Always want a balanced system at least in my opinion. Thank you Joe I find television very educating. Every time somebody turns on the set, I go into the other room and read a book. -- Groucho Marx, 1890-1977 -Original Message- From: dy3lmk143_13mhz [mailto:[EMAIL PROTECTED] Sent: Monday, April 19, 2004 7:11 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Receiver Sensitivity Receiver B is also for a 12 dB SINAD. Do you think a receiver with a 0.35uv is just fine for a repeater? or I still need to use preamps? --- In Repeater-Builder@yahoogroups.com, "dy3lmk143_13mhz" <[EMAIL PROTECTED]> wrote: > If I have two receivers A and B. Receiver A has a sensitivity of > 0.25uV for a 12dB SINAD and Receiver B has a 0.35uV, which has a > better sensitivity? is it Receiver A? 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] Receiver Sensitivity
It is receiver "A" Thank you Joe I find television very educating. Every time somebody turns on the set, I go into the other room and read a book. -- Groucho Marx, 1890-1977 -Original Message- From: dy3lmk143_13mhz [mailto:[EMAIL PROTECTED] Sent: Monday, April 19, 2004 8:05 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Receiver Sensitivity If I have two receivers A and B. Receiver A has a sensitivity of 0.25uV for a 12dB SINAD and Receiver B has a 0.35uV, which has a better sensitivity? is it Receiver A? 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] RX Attenuators. Good Source?
Mini-Circuits is a great source for attenuators, they come in all values and different sizes (wattages) and with different connectors. Thank you Joe I find television very educating. Every time somebody turns on the set, I go into the other room and read a book. -- Groucho Marx, 1890-1977 -Original Message- From: John Everson [mailto:[EMAIL PROTECTED] Sent: Friday, March 12, 2004 10:00 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] RX Attenuators. Good Source? Hello to the group. Has anyone found a good source for some inline attenuators like 3 to 9 db? I see the BNC type floating around at hamfests occasionally but I was wondering if there was a place that had some surplus or at least a place that wasn't charging an arm and a leg. I would like to tame a few preamps here and there. Thanks in advance. John ab6li 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] Micor Delay Line
Does anyone know of a source for the back planes? Thank you Joe I find television very educating. Every time somebody turns on the set, I go into the other room and read a book. -- Groucho Marx, 1890-1977 -Original Message- From: Neil McKie [mailto:[EMAIL PROTECTED] Sent: Tuesday, December 16, 2003 1:27 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Micor Delay Line Best thing to do is get the backplane (motherboard) that is used on the more standard Micor Base station and repeater. Life is much simpler that way. Neil McKie - WA6KLA Jeff DePolo WN3A wrote: > > Just in case you aren't aware, if the Micor came with an Allen > Avionics delay unit, chances are it was a Micor PURC station built > for paging. Longshot, it could have been a simulcast voice repeater, > but those are extremely rare. If, in fact, it's a PURC, it has a > different backplane and a few different cards in the shelf. If you > can get your hands on a PURC manual (it's a supplement manual, like > the Micor control shelf "orange book"), it will make the conversion > go much easier. I have a lot of Micor PURC's and have converted > several to standard repeater use; once you understand the > idiosyncracies between the PURC and the standard Micor RT, it's no > big deal, but without the book, you'll spend a lot of time chasing > down traces on the backplane... > > --- Jeff > - > Jeff DePolo WN3A > Broadcast and Communications Consultant > > > -Original Message- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > > Sent: Tuesday, December 16, 2003 6:50 AM > > To: Repeater-Builder@yahoogroups.com > > Subject: Re: [Repeater-Builder] Micor Delay Line > > > > > > For a check to cover to cover shipping,I will sell the one I > > have. I am working on "trying" to convert a Micor Compa > > station into a UHF repeater and it came with the delay brick. > > > > Contact me directly off-list, > > > > Joe > > N1EZO/8 > > > > 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: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] question about combiners
If you supply the frequencies and power levels it would be helpful in answering this question Thank you Joe N1EZO/8 I find television very educating. Every time somebody turns on the set, I go into the other room and read a book. -- Groucho Marx, 1890-1977 -Original Message- From: Jed Barton [mailto:[EMAIL PROTECTED] Sent: Sunday, December 07, 2003 2:06 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] question about combiners Hey guys. OK, this is a bit greek to me, so your info is appreciated. I have 1 sight, and 2 repeaters. We don't have the space to put them on separate antennas. We have a station master. Could i run 2 UHF repeaters on 1 antenna? I know i would need a combiner. What type of combiner would i need? Any info on doing this would be appreciated. Kindest Regards, Jed.n1jbc Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] Re: Interference Found!
Lightspan is a very common deployment network product for the RBOC's. They create quite a bit of noise, and it should be the 96 times 1.5415 clock that is the over all clocking for the T1's that ride on the equipment. This may be caused by a T1 or a shelf not being properly terminated. If you know where the local Central Office is it may be worth a stop early in the morning as the outside techs are usually there for coffee. Has anyone tried cross posting this to the LMR newsgroup? I believe there are some people over there that may be able to help with this problem. Thank you Joe (an ex- RBOC Central Office tech) I find television very educating. Every time somebody turns on the set, I go into the other room and read a book. -- Groucho Marx, 1890-1977 -Original Message- From: edctexas [mailto:[EMAIL PROTECTED] Sent: Sunday, November 30, 2003 3:23 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Interference Found! Light Span sounds like a transmission product made by AFC in Petluma CA. 147.456 is 72 times 2.048 MHZ or 96 times 1.536 MHz which are typical backplane clocks in that type of equipment. That box is supposed to be FCC part 15 class A with respect to emissions or better. The Lightspan products were supposed to meet Bellcore GR- 1089 for emissions. That level would still be a discernable signal to most 2mtr receivers. Ed K3SWJ --- In Repeater-Builder@yahoogroups.com, "Adam C. Feuer" <[EMAIL PROTECTED]> wrote: > Ken, > > I went back to the site today. There are absolutley NO markings of any kind > on the box. Wow, that thing has some signal on 147.457!! It's really > killing my input. > > Anyway, thanks for the help. I'll be making some phone calls tomorrow > morning. If you don't mind me asking, what do you do for Verizon? Would > they get you involved in soemthing like this? > > Thanks again.. > > Adam N2ACF > - Original Message - > From: Ken <[EMAIL PROTECTED]> > To: > Sent: Saturday, November 29, 2003 5:43 PM > Subject: [Repeater-Builder] Re: Interference Found! > > > > Hi Adam, > >The person you should try to get in contact with at Verizon would > > be the Outside Plant Engineer for your area. Can you email me some > > information such as the location of this Light Span box? I can try > > looking him/her up on the company website Monday. > > > > Ken > > > > --- In Repeater-Builder@yahoogroups.com, "Adam C. Feuer" > > <[EMAIL PROTECTED]> wrote: > > > > > > Hi Eric, > > > > > > Thanks so much for the reply and the information. We are certain > > (100%) > > > that the interference is coming from the Light Span. We DF'ed it > > right to > > > the box and then used the spectrum analyzer to give us the exact > > frequency. > > > Also, being the only box mounted out there in the woods wasn't too > > hard to > > > figure out. Then, we proved are findings and witnessed how good > > our > > > receiver could be without the interference but I won't go into > > those details > > > here. > > > > > > Anyway, I think I'll start by giving them the benefit of the doubt > > and see > > > if I might be able to find the right person to talk to at Verizon > > before I > > > get the FCC involved. I know this will be a long process but I've > > lived > > > with the interference for this long, another month or two won't > > kill me. > > > However, if time goes by and I get no results I will resort to your > > > suggestion. > > > > > > The 1meg split repeater was coordinated for about 20 years under > > TSARC and > > > has now been "grandfathered" by UNYREPCO who does our coordination > > now. > > > > > > Thanks for the info > > > > > > Adam N2ACF > > > > > > > - Original Message - > > > > From: Eric Lemmon <[EMAIL PROTECTED]> > > > > To: > > > > Sent: Saturday, November 29, 2003 2:10 PM > > > > Subject: Re: [Repeater-Builder] Interference Found! > > > > > > > > > > > > > Adam, > > > > > > > > > > Any emission by a commercial/industrial system that causes > > significant > > > > > interference to a licensed user in an adjacent band is a > > violation of > > > > > FCC rules, period. You don't need to spend any more time > > trying to > > > > > contact Verizon to resolve this issue. Write the FCC's > > Enforcement > > > > > Bureau, and let Riley Hollingsworth take it from there. > > Believe me, > > > > > once an FCC "Nastygram" gets Verizon's attention, they'll be > > all over > > > > > that site, looking for the cause. If the problem is not > > corrected in a > > > > > timely manner, a whopping fine will be assessed for every day > > it > > > > > continues. Rest assured, every cent of the cost of correcting > > this > > > > > interference problem will be paid by Verizon, not you. It > > will greatly > > > > > help your case if you can show that the offending carrier is > > at 147.457 > > > > > MHz, and is not the result of an image response in your > > receiver or of > > > > > IM occurring in a poorly-des
RE: [Repeater-Builder] rg-142 cable assembly
Try Connectech in Chicago or even Tessco in Maryland. I have personally used both and the turn around is great. 3-5 days. Contact me off list if you need further info. [EMAIL PROTECTED] Thank you Joe I find television very educating. Every time somebody turns on the set, I go into the other room and read a book. -- Groucho Marx, 1890-1977 -Original Message- From: n1ofj [mailto:[EMAIL PROTECTED] Sent: Friday, November 14, 2003 11:27 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] rg-142 cable assembly Looking for a rg-142 cable assembly, terminated BNC male on one end and N-male on the other. Can be 1-2 feet long. Every business I have contacted has a $100 minimum to order. Does anyone know of somewhere I can get just this one assembly without dealing with this minimum order situation? Thanks, Dave Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
