[Repeater-Builder] Re: MSR 2000 UHF amp
Hi Ian, You have the Canadian UHF PA, which you can obviously see is a lower powered unit. The docs for said are in the loose leaf binder type Canadian Manual and the PA is "similar to" some of the lower powered UHF Mitrek Mobiles. Some of the Low Power UHF PA's I have here will do up to about 55 watts output but I wouldn't push it past say... 35 or the rated 40 watt max. It is a repeater amplifier, just the lower power limit Canadian Model, which is sometimes more practical to use. cheers, s. > "Ian Miller" <[EMAIL PROTECTED]> wrote: > > Hi guys > > Need a little help. I picked up a clean amp for our UHF machine. Its > an MSR2000 amp (same as the pics in the scanned PDF file). > > However, this main board only has 3 transistors on it - one small > driver and 2 of the "flat" white power transistors. There is also a > controller board. The fellow who sold it to us said it was a 30 watt > unit. The tech document on the site shows a 85/100 watt unit. I > guess the Big M made several different boards/styles to fit custom > applications. > > The corresponding model numbers from the website are not here. I find > stickers that say the following: > > > VLE1052A > > and VLN1064A > > I'll download and print that tech document, but I wonder if any one > has some quick info to make this a straight in-out amp for our UHF > repeater. I think I can bypass that controller board, unless it is > absolutely necessary. > > Thanks > > Ian, VA2IR > VE2RMP Repeater group >
[Repeater-Builder] Re: MSR-2000 UHF Repeater (tx & rx modules - band segments)
Hi Tony Based on your information and your callsign I would suspect the MSR-2000 receiver and transmitter modules you have there were probably removed from what I call "Line A and above" radio services (which is a northern portion of the US and Canada) Although we do have a number of Government Services using the UHF Band below our available (in California) 420- 450MHz Amateur (ham) band. Any MSR-2000 module with RF in/on it was made available in band segments. So the UHF 400-512 band was sliced up into at least 3 segments, maybe 4. Depending on the specific manual and who's telling the story... the US Commercial Radio standard range receiver operates at least 450 to about 490 MHz. Probably lower than 490 MHz but I've seen some mid range receivers "go that high". The high range/segment receiver probably performs ok in 470 to 512 MHz range. And of course there is at least one low range segment that is 400 to 430 MHz? I know the 450-490 MHz range receiver easily goes down into the 440-450 MHz Ham band because I using a number of them in repeater and link operation. Kind of the same band segment offerings with the MSR-2000 transmitter modules although they do tend to be much more wide over their available operational range. The limiting issue with the receiver is the pre-selector and the injection chain. The receiver has a realistic operational range and the nominal usable bandwidth inside that range is reported to be about 4 MHz. There are different adjustment combinations within that range allowing wided rx frequency ranges. I would not expect the 490-512 MHz receiver to come down to the 440 Ham band without way too much work. I would not expect the 400-430 MHz receiver to come up to the 440 Ham band without a lot of work. Most of the above mentioned work is related to working on the pre-selector assembly, which is not an easy task. The real world fix... find a set of replacement transmiter and receiver modules on ebay or offer up a possible trade with someone. Then you have to deal with the rf power amplifier, which is another kettle of fish. Hope that helps a bit.. cheers, skipp skipp025 at yahoo.com > "Tony Lelieveld" <[EMAIL PROTECTED]> wrote: > Hi all, > > I have a UHF MSR2000 repeater and various RX TX modules. The > exciter module is a VTE4001A for 403-430 MHz. The RX module > is a VRE4001B for the 450-512 MHz. > > Has anybody had any success tuning these to the 430-450 MHz > Ham band? The curious part is that the existing RX (VRE4001B) > was used on 416.9375. Are they that wide band at the > front-end preselectors? Any and all information will be > appreciated. > Tony VE3DWI.
[Repeater-Builder] Re: MSR 2000 UHF band split low band?
Splatter hasn't been a problem yet... from someone doing narrow band operation in more than one very large Metro Area. cheers, s. > Jim <[EMAIL PROTECTED]> wrote: > > Adjacent channel rejection just isn't adequate for narrowband > operation. It will hear splatter from adjacent channel users. > > Still doesn't restrict the MSR-2000 Repeater Receiver from narrow > > band operation without modifications. The factory installed xtal > > filters work just fine as-is. Can't help it if the repeater is > > not on a magic list as being wide band only operation.
Re: [Repeater-Builder] Re: MSR 2000 UHF band split low band?
skipp025 wrote: >> Jim <[EMAIL PROTECTED]> wrote: > >>> They will already operate narrow band without any modification. >>> >> Not an MSR-2000! They stopped making those before the NB mandate >> came into being. > > The mandate in place being the requirement for narrow > band operation? Right-for the feds, the cutoff is the end of this year-12/31/07! Commercial LMR is a few years off yet. >> You can turn the deviation down, of course, but the receiver >> will still be wide-band. Xtal filter mods can be gotten from >> Comm-Spec, > > The receivers operate narrow band quite well as is. One doesn't > need to replace the xtal filters in most applications. The adjacent channel rejection is not adequate for narrowband usage. There WILL be people on the adjacent NB channels soon if there isn't already. >> ...but doing so is not appropriate for a fed or PS customer, > > Depends really... lot of them are in PS service in rural areas > where tax money doesn't flow like water. But mention Fed, Homeland > Security (kind of an oxy...) and PS Customers and there are often > few restraints on the purse strings... your tax dollars spent. Not > to mention the "Empire Builders" within a lot of Gov Agencies who'd > much rather have a shinny new Motorola 700 MHz Trunking System > in place regardless of the initial and on-going costs. > >> if for no other reason then it's old enough that it should be >> replaced anyway, from a reliability standpoint. 20 years is >> a normal end-of-life for base station equipment in >> mission-critical applications. >> Jim Barbour >> WD8CHL Point is-the equipment will be too old to be considered reliable anyway. Parts are no longer available, because the components are no longer made. > We most often pay Government Technicians to replace repeater > equipment versus fixing them. > > Still doesn't restrict the MSR-2000 Repeater Receiver from narrow > band operation without modifications. The factory installed xtal > filters work just fine as-is. Can't help it if the repeater is > not on a magic list as being wide band only operation. > > cheers, > skipp See above. Adjacent channel rejection just isn't adequate for narrowband operation. It will hear splatter from adjacent channel users. -- Jim Barbour WD8CHL
[Repeater-Builder] Re: MSR 2000 UHF band split low band?
> Jim <[EMAIL PROTECTED]> wrote: > > They will already operate narrow band without any modification. > > > > Not an MSR-2000! They stopped making those before the NB mandate > came into being. The mandate in place being the requirement for narrow band operation? > You can turn the deviation down, of course, but the receiver > will still be wide-band. Xtal filter mods can be gotten from > Comm-Spec, The receivers operate narrow band quite well as is. One doesn't need to replace the xtal filters in most applications. > ...but doing so is not appropriate for a fed or PS customer, Depends really... lot of them are in PS service in rural areas where tax money doesn't flow like water. But mention Fed, Homeland Security (kind of an oxy...) and PS Customers and there are often few restraints on the purse strings... your tax dollars spent. Not to mention the "Empire Builders" within a lot of Gov Agencies who'd much rather have a shinny new Motorola 700 MHz Trunking System in place regardless of the initial and on-going costs. > if for no other reason then it's old enough that it should be > replaced anyway, from a reliability standpoint. 20 years is > a normal end-of-life for base station equipment in > mission-critical applications. > Jim Barbour > WD8CHL We most often pay Government Technicians to replace repeater equipment versus fixing them. Still doesn't restrict the MSR-2000 Repeater Receiver from narrow band operation without modifications. The factory installed xtal filters work just fine as-is. Can't help it if the repeater is not on a magic list as being wide band only operation. cheers, skipp
Re: [Repeater-Builder] Re: MSR 2000 UHF band split low band?
skipp025 wrote: > The only issue might be getting the receiver up to the 440-450 > range and maybe reduced output from the high power 110w PAs. > If you can get them cheap they are well worth using. You > can also trade them with us here in the US for mid range > receivers as we use the 420 band for linking. > > They will already operate narrow band without any modification. > Not an MSR-2000! They stopped making those before the NB mandate came into being. You can turn the deviation down, of course, but the receiver will still be wide-band. Xtal filter mods can be gotten from Comm-Spec, but doing so is not appropriate for a fed or PS customer, if for no other reason then it's old enough that it should be replaced anyway, from a reliability standpoint. 20 years is a normal end-of-life for base station equipment in mission-critical applications. -- Jim Barbour WD8CHL
[Repeater-Builder] Re: MSR 2000 UHF band split low band?
Hi Jessie, What I call the Canadian 40 watt PA is pretty much a Mitrek Mobile 50 watt board in the same 110 watt chassis. There is no easy way to tell the difference from the outside unless you know the model numbers. The Canadian PA works mucho fine as built. Most will do at or above 45 to 55 watts (depending on all things related). Set them at 30 to 40 watts and get on with the show. Otherwise they crank down a bit without trouble to drive that external TPL/Vocom Amplifier. (notice I didn't include Henry Amplifiers in the list)... The quick way to tell if you have the Canadian low power MSR is to look at the DC Power Supply. The US Market 110 watt UHF MSR-2000 Repeaters have a pretty massive power supply with minimal shielding over the transformer in what we might call an "open face" physical layout. The entire supply parts are placed open face on the chassis. The low power MSR repeater/base stations have a much smaller power supply (self contained in a box) mounted horizontal (sideways). Some of you Motorhead (Motorola) people will know this power supply as the very popular Motorola Consolette or Mobile being used as a base station 13.8v power supply* (and there are at least two versions of that supply). So the simple "look test" is about looking past the PA at the power supply. If you see the covered box power supply you "for sure" have the low power PA installed. One other thing... The high power constant duty MSR-2000 vhf PA that looks like the Micor Power Amplifier is only similar. Only a few of the parts interchange and I know the power control board section isn't one of them. cheers, skipp > "Jesse Lloyd" <[EMAIL PROTECTED]> wrote: > With the MSR PA's does the 110 Watt intermittent duty PA look > the same as the 30 Watt one? I know the 110 continuous duty > one looks similar to the Micor 110 Watt one, just black, is > a separate rack mount unit and cooling fins span the whole rack. > > Attached is a picture (not sure what the rules of the list server > are regarding pics but oh well). Could this be a 110 watt unit? > Jesse
[Repeater-Builder] Re: MSR 2000 UHF band split low band?
The only issue might be getting the receiver up to the 440-450 range and maybe reduced output from the high power 110w PAs. If you can get them cheap they are well worth using. You can also trade them with us here in the US for mid range receivers as we use the 420 band for linking. They will already operate narrow band without any modification. Most Government Agencies can't see that small detail when there's a chance of a new shinny radio being bought. And it's not their money being spent... cheers, s. > "Jesse Lloyd" <[EMAIL PROTECTED]> wrote: > Thanks, > Living in BC here, we see quite a few Low Band UHF repeaters. > RCMP, Forestry, Highways, to name a few, used low band UHF > as link frequencies, so when a hub repeater went up it was > low band. These have come out of service now, because of > narrow banding, and its just a matter if figuring out if > they'll work in the ham band. > Thanks, > Jesse
Re: [Repeater-Builder] Re: MSR 2000 UHF band split low band?
Thanks, Living in BC here, we see quite a few Low Band UHF repeaters. RCMP, Forestry, Highways, to name a few, used low band UHF as link frequencies, so when a hub repeater went up it was low band. These have come out of service now, because of narrow banding, and its just a matter if figuring out if they'll work in the ham band. Thanks, Jesse On 11/10/07, skipp025 <[EMAIL PROTECTED]> wrote: > > Hi Jesse, > > Working from a memory polluted by a few bad choices back in the > late 70's... There should be three most common range of the UHF > MSR-2000. The low UHF Range was about 409 to 430 MHz, the formal > band edges escape me. > > The mid UHF range operation is 450 to about 490 typical. The > T-Band Range operation was about 483 to 512 MHz. > > There are a number of differences in the PA by band segment > and by version number. The TLE- "B versions" were much better > than the TLE- "A versions". The harmonic filter was revised > so it doesn't unsolder itself at the high current points and > cause the PA to poop (fail). > > Both the ceramic substrates and the transistor "modules" change > by band segment as does the harmonic filter. > > The 450-490 range PA is pretty good almost to 495 MHz in many > examples & the 483-512 PA is not happy about going very far below > the normal band edge. I have seen and used examples that operated > well above their specified range but few work well below their > band edge without reduced power, getting really hot or some other > issue. > > Most of the low range UHF MSR units were made for places like > Canada and special aps. Those binder manuals have the part numbers > for those PA's as-built. And to add to the mix... many of those > PA's are the low power ~40 watt packages. Trying to find the 110 > watt low range UHF PA is right up there with "hens teeth". > > cheers, > skipp > > > > "Jesse Lloyd" <[EMAIL PROTECTED]> wrote: > > Hey all, > > > > Was there ever a MSR 2000 built that covered the low UHF split > 410ish to 440ish? > > > > I know of the 450-470, 470-494, 494-512 splits, but is there another > > low band one? > > > > If so does anyone know the receiver part and PA part numbers for it? > > Thanks, > > Jesse > > > > >
[Repeater-Builder] Re: MSR 2000 UHF band split low band?
Hi Jesse, Working from a memory polluted by a few bad choices back in the late 70's... There should be three most common range of the UHF MSR-2000. The low UHF Range was about 409 to 430 MHz, the formal band edges escape me. The mid UHF range operation is 450 to about 490 typical. The T-Band Range operation was about 483 to 512 MHz. There are a number of differences in the PA by band segment and by version number. The TLE- "B versions" were much better than the TLE- "A versions". The harmonic filter was revised so it doesn't unsolder itself at the high current points and cause the PA to poop (fail). Both the ceramic substrates and the transistor "modules" change by band segment as does the harmonic filter. The 450-490 range PA is pretty good almost to 495 MHz in many examples & the 483-512 PA is not happy about going very far below the normal band edge. I have seen and used examples that operated well above their specified range but few work well below their band edge without reduced power, getting really hot or some other issue. Most of the low range UHF MSR units were made for places like Canada and special aps. Those binder manuals have the part numbers for those PA's as-built. And to add to the mix... many of those PA's are the low power ~40 watt packages. Trying to find the 110 watt low range UHF PA is right up there with "hens teeth". cheers, skipp > "Jesse Lloyd" <[EMAIL PROTECTED]> wrote: > Hey all, > > Was there ever a MSR 2000 built that covered the low UHF split 410ish to 440ish? > > I know of the 450-470, 470-494, 494-512 splits, but is there another > low band one? > > If so does anyone know the receiver part and PA part numbers for it? > Thanks, > Jesse >
[Repeater-Builder] Re: MSR 2000 UHF Repeater (PL to DPL)
Hi Brian, Should be a plug and play drop in Module Change if you have the single duplex ctcss module laying horizontal in the upper left side of the Backplane slot(s). cheers, skipp > Brian Alesio <[EMAIL PROTECTED]> wrote: > > Dear Group, > > To change a MSR 2000 UHF repeater from PL to DPL are any jumper > changes required anywhere? Or is a direcet card swap without > any changes all that is required. This would be using the > TRN5076A duplex DPL card. > Thanks. > BRIAN >
Re: [Repeater-Builder] Re: MSR 2000 UHF Band Splits
Jesse, Look closer at that model number; MSR2000 UHF stations will normally be C74GRB-yy or C74GSB-yy. But, the station model number won't reveal the UHF band split. If your station has a TLE2283 PA deck, it is for 450-494 MHz; if it has a TLE2284 PA deck, it is for 494-512 MHz. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Jesse Lloyd Sent: Sunday, August 26, 2007 11:12 AM To: Repeater-Builder@yahoogroups.com Subject: [Norton AntiSpam] Re: [Repeater-Builder] Re: MSR 2000 UHF Band Splits I'm looking at a repeater with the model no of C7465B3106. Any Idea which split that would be?
[Repeater-Builder] Re: MSR 2000 UHF Band Splits
Maybe if I can get close to a UHF Manual on Monday... The simple check is to remove the receiver and transmitter cover and read the frequencies off the channel elements. Unless someone has removed the channel elements... skipp >"Jesse Lloyd" <[EMAIL PROTECTED]> wrote: > I'm looking at a repeater with the model no of C7465B3106. > Any Idea which split that would be? > > > > On 8/26/07, skipp025 <[EMAIL PROTECTED]> wrote: > > > > Hi Jesse, > > > > A quick sum of the UHF MSR-2000 band splits normally described > > as three choices. A low range 403-430 model, the 450-483 MHz > > model and the "T-Band" high range 483-512 range. the 483 value > > might be a plus or minus a bit but those two ranges work toward > > those values. > > > > You will not get the T-Band range receiver to come down (unless > > you have a lot of time and skill... nor will you get the 415 MHz > > receiver up to 445 MHz without much serious effort. > > > > Better to trade and/or find replacement receivers. > > > > The out of range PA's should be operated at much reduced values > > and or modified... which includes work in the harmonic filter > > section. > > > > cheers, > > skipp > > > > > "Jesse Lloyd" wrote: > > > Hey all, > > > Does anyone know the band-splits for the UHF MSR 2000, or a > > > web page that has a model no. reference chart? > > > Thanks, > > > Jesse > > > > > > > > > >
Re: [Repeater-Builder] Re: MSR 2000 UHF Band Splits
I'm looking at a repeater with the model no of C7465B3106. Any Idea which split that would be? On 8/26/07, skipp025 <[EMAIL PROTECTED]> wrote: > > Hi Jesse, > > A quick sum of the UHF MSR-2000 band splits normally described > as three choices. A low range 403-430 model, the 450-483 MHz > model and the "T-Band" high range 483-512 range. the 483 value > might be a plus or minus a bit but those two ranges work toward > those values. > > You will not get the T-Band range receiver to come down (unless > you have a lot of time and skill... nor will you get the 415 MHz > receiver up to 445 MHz without much serious effort. > > Better to trade and/or find replacement receivers. > > The out of range PA's should be operated at much reduced values > and or modified... which includes work in the harmonic filter > section. > > cheers, > skipp > > > "Jesse Lloyd" <[EMAIL PROTECTED]> wrote: > > Hey all, > > Does anyone know the band-splits for the UHF MSR 2000, or a > > web page that has a model no. reference chart? > > Thanks, > > Jesse > > > > >
[Repeater-Builder] Re: MSR 2000 UHF Band Splits
Hi Jesse, A quick sum of the UHF MSR-2000 band splits normally described as three choices. A low range 403-430 model, the 450-483 MHz model and the "T-Band" high range 483-512 range. the 483 value might be a plus or minus a bit but those two ranges work toward those values. You will not get the T-Band range receiver to come down (unless you have a lot of time and skill... nor will you get the 415 MHz receiver up to 445 MHz without much serious effort. Better to trade and/or find replacement receivers. The out of range PA's should be operated at much reduced values and or modified... which includes work in the harmonic filter section. cheers, skipp > "Jesse Lloyd" <[EMAIL PROTECTED]> wrote: > Hey all, > Does anyone know the band-splits for the UHF MSR 2000, or a > web page that has a model no. reference chart? > Thanks, > Jesse >
[Repeater-Builder] Re: MSR 2000 UHF Conversion
Hi Ed, Very tempting for me to simply offer to trade you for a standard 450 MHz range receiver. It would be neat to have something down in the sub band range. I'll think about that... The first option would be to trade for a standard range receiver strip where possible. The second option would be to swap out or modify the low range front end, but you might also have to work on the injection chain. Moving a receiver up doesn't seem to be as hard as moving it down in the preselector coil department. Parts from a 450 Mitrek might work, but there would be a bit of work. All things considered, a receiver swap or outright purchase would be your most practical option. The transmitter will possibly tune up with little or no mods. It's a well designed strip, with at least 40 MHz range band width out of the box. Hope that helps cheers, skipp skipp025 at yahoo.com > "va6ef" <[EMAIL PROTECTED]> wrote: > Hello Everyone; > > We an MSR 2000 on 411.8375 tx and 416.8375 Rx that we wish to get > on 448.400 TX and 443.400 RX.. I am told that we require a Front End > Helical Resonator for the reciever to accomplish this .. Anyone help > me out finding this for these frequencies > > thanks > Ed 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: [SPAM] - [Repeater-Builder] re: MSR-2000 UHF PA in the Amateur Band - Email found in subject
Skipp, Thanks. I just looked here in the shop and we already have the manuals for a UHF MSR2000. ;) These were in working condition when removed from service a few weeks ago due to system upgrades and had no issues. The are complete systems, with duplexers and battery revert options already on them and were going to be tossed into the dumpster!! A fellow ham, and employee of the place, "rescued" them before it happened, and donated 2 of the 4 units he got to me, so you cant beat that with a stick. :) Not sure if they have a preamp or not yet, but hope to find out this weekend. I will take your suggestion and run it at a lower power. The 2 systems these will be replacing are not very heavily used so I shouldn't have any issues. I already have a pinout of where I need to grab my controller connections off the backplane for the squelch card and I'm ordering the crystals up now. Retuning and checking the duplexers should be no problem on the service monitors here. I'll check the bandpass on them but I suspect they are ok, since these were used by a FD in a large city, in a heavy rf area right across from NYC so I'm sure they would notice if they had problems with them. Kevin -Original Message- From: skipp025 [mailto:[EMAIL PROTECTED] Sent: Thursday, October 21, 2004 12:33 PM To: Repeater-Builder@yahoogroups.com Subject: [SPAM] - [Repeater-Builder] re: MSR-2000 UHF PA in the Amateur Band - Email found in subject > "Kevin Bednar" <[EMAIL PROTECTED]> wrote: > Thanks Skipp. I believe the fella I'm getting them from has a manual > available as well. Great, the manuals are really a must have. To cover the UHF MSR, you actually need all three manuals (unless you have the microfiche). The power supplies are only covered in the VHF (green) manual. > I was going to run it at about 80 watts instead of the full 110. You'd do better to run 65 watts. I've not had a derated UHF ~65 watt pa fail when used with a circulator/isolator. > They also have the factory duplexers with them, and I'm ASSuming they > should tune down as well? > Kevin > K2KMB > Yes, if the duplexer probe kits are the 450-470 range units. Also check the duplexer for an over re-entrant energy coupling problem. It requires a spectral display with tracking gen. I've found on a few MSR UHF 450-470 versions. This will show up as an wider (broader) than normal bandpass peak that doesn't seem to allow both pass cavities in one path to completely align as one peak. I've not yet seen this problem with the T-1500 series of motorhead duplexers. Lightning stricks might be one cause of this problem, the duplexer operation will be less than good enough. I've traced this issue to 3 different UHF duplexers sent in from various (and different) east cost locations where lightning is a regular event. I'll stay with the west coast earth quakes thank you. A previous RB post mentioned a problem with the MSR Receiver front end suffering damage from lightning strikes. The msr receiver problem might be an extention of the same duplexer damage event. It does take a spectral display/graph to really see the probe kit problem. good luck skipp www.radiowrench.com/sonic 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: MSR-2000 UHF PA in the Amateur Band
> "Kevin Bednar" <[EMAIL PROTECTED]> wrote: > Thanks Skipp. I believe the fella I'm getting > them from has a manual available as well. Great, the manuals are really a must have. To cover the UHF MSR, you actually need all three manuals (unless you have the microfiche). The power supplies are only covered in the VHF (green) manual. > I was going to run it at about 80 watts > instead of the full 110. You'd do better to run 65 watts. I've not had a derated UHF ~65 watt pa fail when used with a circulator/isolator. > They also have the factory duplexers with > them, and I'm ASSuming they should tune > down as well? > Kevin > K2KMB > Yes, if the duplexer probe kits are the 450-470 range units. Also check the duplexer for an over re-entrant energy coupling problem. It requires a spectral display with tracking gen. I've found on a few MSR UHF 450-470 versions. This will show up as an wider (broader) than normal bandpass peak that doesn't seem to allow both pass cavities in one path to completely align as one peak. I've not yet seen this problem with the T-1500 series of motorhead duplexers. Lightning stricks might be one cause of this problem, the duplexer operation will be less than good enough. I've traced this issue to 3 different UHF duplexers sent in from various (and different) east cost locations where lightning is a regular event. I'll stay with the west coast earth quakes thank you. A previous RB post mentioned a problem with the MSR Receiver front end suffering damage from lightning strikes. The msr receiver problem might be an extention of the same duplexer damage event. It does take a spectral display/graph to really see the probe kit problem. good luck skipp www.radiowrench.com/sonic 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: MSR 2000 UHF
Yes, it will. skipp www.radiowrench.com > John Place <[EMAIL PROTECTED]> wrote: > Would like to know if the UHF version will tune down like the vhf unit > without mods? > > -- > Amateur Radio > W4HNK EM92vx 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/
