[Repeater-Builder] Tait t2020
Hi guys .I have a t2020 VHF low 66-88mhz and I have the windows 2020 software 2.7 and when I try to read a radio I have it comes up with the wrong version error .when I interrogate the radio the db comes up with .any suggestions Thank You, Ian Wells, Kerinvale Comaudio, 361 Camboon Road.Biloela.4715 Ph 0749922449 or 0409159932 or 0749922574 www.kerinvalecomaudio.com.au
Re: [Repeater-Builder] Re:building a repeater out of 2 Kenwood TK-830G's
BTW, here's a link to a web site done by a DC comm's lawyer. Yes, he has the 'disclaimers' not to use it as 'legal advice', but you can beturbut it's right. http://www.narrowbandinglaw.com/faqs.html It's the second last question. There is a link in the answer to the FCC order involved, but of course it's filled with typical legal-ese... One thing I am not sure about-I do remember now that there was a narrowband only version of the TK-x20 mobiles, along with a few other Kenwoods of that vintage-the model number had an 'N' on the end. I don't remember a TKR version, but there may have been. Those should of course be fine, because they started life NB. Also rx's are not an issue. Narrowbanding, say, an MII rx is fine, since the FCC doesn't care about rx's. It's only tx's that need to be properly type accepted. Jim Barbour Transcore On 3/20/2010 12:21 AM, wb6dgn wrote: Except for one thing-the x20 series radios weren't type accepted for narrowband, and the FCC has already said that if that's the case, it won't fly. The last time around, when a manufacturer wished to provide a narrow banding kit for a previously type accepted radio, they applied to the FCC for a supplemental type certificate (STC) covering the modification kit installed in the subject equipment. This STC number was attached to the radio ID plate in addition to or in place of the original type acceptance number. This kit was then dealer or service shop installed in accordance with the manufacturer's instructions. This then provided an updated type acceptance ID for that subject radio model series with the kit installed. It was not up to the user, nor the user's local radio shop to apply for this. This program and the rather extensive engineering data required was originated and and undertaken by the original equipment manufacturer BUT installed by a local radio repair facility. While receiver modifications were not required nor covered by the STC, they were also supplied in every case that I am aware of, as part of the narrow banding kit.
[Repeater-Builder] Commercial Antenna for 2m Repeater Question
Hi Folks, Our club has been given permission to use one of the Public Safety antennas for our 2m repeater. The antenna is a PD-220-3A 150.5-158.5MHz. Our repeater freq. is 146.745. The antenna is fed with some nice looking Cell Flex LCF-12-50 ju, hard-line. The PD-200 is one of those totally enclosed fiberglass antennas; we don't have funds to pay for a climb to take down or replace or tweak. Have two questions: We think we can live with the power loss if we build a coupler to match the inevitable high SWR. Can someone point us to a formula to estimate/calculate both the projected SWR and power loss, etc? WAGs R fine too. Is anyone aware of any 2m coupler projects that might work for this scenario? Our current repeater antenna is in the attic of one of our members garage at 25ft ASL.this antenna would be 425ft ASL.so even with losses we expect significantly better performance. 73, Dave WA3GIN
Re: [Repeater-Builder] Commercial Antenna for 2m Repeater Question
I'd consider a Z-matcher. Telewave, Sinclair, EMR and others make them. You don't want to make your transmitter unhappy. You didn't say how bad the SWR is. You might get away with doing nothing. Chuck WB2EDV - Original Message - From: David Jordan To: Repeater-Builder@yahoogroups.com Sent: Monday, March 22, 2010 10:13 AM Subject: [Repeater-Builder] Commercial Antenna for 2m Repeater Question Hi Folks, Our club has been given permission to use one of the Public Safety antennas for our 2m repeater. The antenna is a PD-220-3A 150.5-158.5MHz. Our repeater freq. is 146.745. The antenna is fed with some nice looking Cell Flex LCF-12-50 ju, hard-line. The PD-200 is one of those totally enclosed fiberglass antennas; we don't have funds to pay for a climb to take down or replace or tweak. Have two questions: We think we can live with the power loss if we build a coupler to match the inevitable high SWR. Can someone point us to a formula to estimate/calculate both the projected SWR and power loss, etc? WAGs R fine too. Is anyone aware of any 2m coupler projects that might work for this scenario? Our current repeater antenna is in the attic of one of our members garage at 25ft ASL.this antenna would be 425ft ASL.so even with losses we expect significantly better performance. 73, Dave WA3GIN -- No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.791 / Virus Database: 271.1.1/2763 - Release Date: 03/22/10 03:33:00
[Repeater-Builder] Re:building a repeater out of 2 Kenwood TK-830G's
By the way..any Kenwood radios that have the sufix G (as in TK-830G) are programmable for wide/narrow. The TK-830 is ONLY capable of wideband. That's the reason I choose the TK-830G. --- In Repeater-Builder@yahoogroups.com, wd8chl wd8...@... wrote: BTW, here's a link to a web site done by a DC comm's lawyer. Yes, he has the 'disclaimers' not to use it as 'legal advice', but you can beturbut it's right. http://www.narrowbandinglaw.com/faqs.html It's the second last question. There is a link in the answer to the FCC order involved, but of course it's filled with typical legal-ese... One thing I am not sure about-I do remember now that there was a narrowband only version of the TK-x20 mobiles, along with a few other Kenwoods of that vintage-the model number had an 'N' on the end. I don't remember a TKR version, but there may have been. Those should of course be fine, because they started life NB. Also rx's are not an issue. Narrowbanding, say, an MII rx is fine, since the FCC doesn't care about rx's. It's only tx's that need to be properly type accepted. Jim Barbour Transcore On 3/20/2010 12:21 AM, wb6dgn wrote: Except for one thing-the x20 series radios weren't type accepted for narrowband, and the FCC has already said that if that's the case, it won't fly. The last time around, when a manufacturer wished to provide a narrow banding kit for a previously type accepted radio, they applied to the FCC for a supplemental type certificate (STC) covering the modification kit installed in the subject equipment. This STC number was attached to the radio ID plate in addition to or in place of the original type acceptance number. This kit was then dealer or service shop installed in accordance with the manufacturer's instructions. This then provided an updated type acceptance ID for that subject radio model series with the kit installed. It was not up to the user, nor the user's local radio shop to apply for this. This program and the rather extensive engineering data required was originated and and undertaken by the original equipment manufacturer BUT installed by a local radio repair facility. While receiver modifications were not required nor covered by the STC, they were also supplied in every case that I am aware of, as part of the narrow banding kit.
RE: [Repeater-Builder] Commercial Antenna for 2m Repeater Question
Hi Chuck, We couldn't do a proper test this weekend. The hard-line had its connector cut-off and we didn't have a compatible connector for this type hard-line. Ordering a connector today. I'm guessing about 3:1 but won't know for sure till we get some RF into it. Best, dave _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Chuck Kelsey Sent: Monday, March 22, 2010 10:29 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Commercial Antenna for 2m Repeater Question I'd consider a Z-matcher. Telewave, Sinclair, EMR and others make them. You don't want to make your transmitter unhappy. You didn't say how bad the SWR is. You might get away with doing nothing. Chuck WB2EDV
Re: [Repeater-Builder] Commercial Antenna for 2m Repeater Question
*Before writing this off do a return loss analysis of the antenna. In my experience I have found that often the antenna will **cover a broader frequency range that the spec says.* ** lh On Mon, Mar 22, 2010 at 10:13 AM, David Jordan wa3...@comcast.net wrote: Hi Folks, Our club has been given permission to use one of the Public Safety antennas for our 2m repeater. The antenna is a PD-220-3A 150.5-158.5MHz. Our repeater freq. is 146.745. The antenna is fed with some nice looking Cell Flex LCF-12-50 ju, hard-line. The PD-200 is one of those totally enclosed fiberglass antennas; we don’t have funds to pay for a climb to take down or replace or tweak. Have two questions: We think we can live with the power loss if we build a coupler to match the inevitable high SWR. Can someone point us to a formula to estimate/calculate both the projected SWR and power loss, etc? WAGs R fine too. Is anyone aware of any 2m coupler projects that might work for this scenario? Our current repeater antenna is in the attic of one of our members garage at 25ft ASL…this antenna would be 425ft ASL…so even with losses we expect significantly better performance. 73, Dave WA3GIN
RE: [Repeater-Builder] Commercial Antenna for 2m Repeater Question
I've got a vhf-hi z-matcher up on ebay right now. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=180482604103ssPageName= STRK:MESELX:IT item=180482604103ssPageName=STRK:MESELX:IT decibel unit. Worked really well but no longer needed. Kb0wlf From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of David Jordan Sent: Monday, March 22, 2010 9:13 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Commercial Antenna for 2m Repeater Question Hi Folks, Our club has been given permission to use one of the Public Safety antennas for our 2m repeater. The antenna is a PD-220-3A 150.5-158.5MHz. Our repeater freq. is 146.745. The antenna is fed with some nice looking Cell Flex LCF-12-50 ju, hard-line. The PD-200 is one of those totally enclosed fiberglass antennas; we don't have funds to pay for a climb to take down or replace or tweak. Have two questions: We think we can live with the power loss if we build a coupler to match the inevitable high SWR. Can someone point us to a formula to estimate/calculate both the projected SWR and power loss, etc? WAGs R fine too. Is anyone aware of any 2m coupler projects that might work for this scenario? Our current repeater antenna is in the attic of one of our members garage at 25ft ASL.this antenna would be 425ft ASL.so even with losses we expect significantly better performance. 73, Dave WA3GIN No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.437 / Virus Database: 271.1.1/2756 - Release Date: 03/22/10 07:33:00
Re: [Repeater-Builder] Commercial Antenna for 2m Repeater Question
Good advice, I would suggest putting your TX onto the ant and check the vswr before doing anything else Steve, M1SWB - Original Message - From: Larry Horlick To: Repeater-Builder@yahoogroups.com Sent: Monday, March 22, 2010 2:58 PM Subject: Re: [Repeater-Builder] Commercial Antenna for 2m Repeater Question Before writing this off do a return loss analysis of the antenna. In my experience I have found that often the antenna will cover a broader frequency range that the spec says. lh On Mon, Mar 22, 2010 at 10:13 AM, David Jordan wa3...@comcast.net wrote: Hi Folks, Our club has been given permission to use one of the Public Safety antennas for our 2m repeater. The antenna is a PD-220-3A 150.5-158.5MHz. Our repeater freq. is 146.745. The antenna is fed with some nice looking Cell Flex LCF-12-50 ju, hard-line. The PD-200 is one of those totally enclosed fiberglass antennas; we don’t have funds to pay for a climb to take down or replace or tweak. Have two questions: We think we can live with the power loss if we build a coupler to match the inevitable high SWR. Can someone point us to a formula to estimate/calculate both the projected SWR and power loss, etc? WAGs R fine too. Is anyone aware of any 2m coupler projects that might work for this scenario? Our current repeater antenna is in the attic of one of our members garage at 25ft ASL…this antenna would be 425ft ASL…so even with losses we expect significantly better performance. 73, Dave WA3GIN
[Repeater-Builder] Re:building a repeater out of 2 Kenwood TK-830G's
Hello back, I've been in direct contact with the FCC regarding the legal operation of wide band type certified in narrow band service both before and after the narrow band mandate. The key issue seems to be the mention of any hardware modifications to the existing equipment, which are interpreted as a no-go, an answer I would expect when the majority of questions are submitted in a hardware modified context. However, no clear interpretation is given for equipment operation without physical hardware modifications. As an example a type accepted wide band transmitter already operating narrow band as originally installed and done so without and hardware or software modifications. For the sake of this thread, I don't include receiver operation, an example being an IF Crystal Filter kit change (IE not normally considered a transmitting device). So the only way to get a real-deal answer is to return to the FCC with an official inquiry... of which I have now completed and as submitted I/we should receive an official answer/reply within 3 business days. By hopefully asking the right questions without all the sidebar information, we can receive an honest interpretation direct from the horses mouth. cheers, s. wd8chl wd8...@... wrote: BTW, here's a link to a web site done by a DC comm's lawyer. Yes, he has the 'disclaimers' not to use it as 'legal advice', but you can beturbut it's right. http://www.narrowbandinglaw.com/faqs.html It's the second last question. There is a link in the answer to the FCC order involved, but of course it's filled with typical legal-ese... One thing I am not sure about-I do remember now that there was a narrowband only version of the TK-x20 mobiles, along with a few other Kenwoods of that vintage-the model number had an 'N' on the end. I don't remember a TKR version, but there may have been. Those should of course be fine, because they started life NB. Also rx's are not an issue. Narrowbanding, say, an MII rx is fine, since the FCC doesn't care about rx's. It's only tx's that need to be properly type accepted. Jim Barbour Transcore On 3/20/2010 12:21 AM, wb6dgn wrote: Except for one thing-the x20 series radios weren't type accepted for narrowband, and the FCC has already said that if that's the case, it won't fly. The last time around, when a manufacturer wished to provide a narrow banding kit for a previously type accepted radio, they applied to the FCC for a supplemental type certificate (STC) covering the modification kit installed in the subject equipment. This STC number was attached to the radio ID plate in addition to or in place of the original type acceptance number. This kit was then dealer or service shop installed in accordance with the manufacturer's instructions. This then provided an updated type acceptance ID for that subject radio model series with the kit installed. It was not up to the user, nor the user's local radio shop to apply for this. This program and the rather extensive engineering data required was originated and and undertaken by the original equipment manufacturer BUT installed by a local radio repair facility. While receiver modifications were not required nor covered by the STC, they were also supplied in every case that I am aware of, as part of the narrow banding kit.
[Repeater-Builder] Motorola R2002B Monitor - DOS
Well, it looks like the old R2002B took a drizzlin'. The mongo 6.2v Zener in the 5v overvoltage protect circuit is a dead short, leading me to believe there are more problems lurking in the power supply. Anybody have an 'extra' power supply, or know who works on these things? Thanks, Tim
[Repeater-Builder] Re: Welcome to Dayton (Partial Hamvention Primer)
Mike - You are paying that hidden moving tax ! w9gbEmoticon1.gif
RE: [Repeater-Builder] Commercial Antenna for 2m Repeater Question
What is the power rating of the device? _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Chris Curtis Sent: Monday, March 22, 2010 11:07 AM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Commercial Antenna for 2m Repeater Question I've got a vhf-hi z-matcher up on ebay right now. http://cgi.ebay. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=180482604103ssPageName= STRK:MESELX:IT com/ws/eBayISAPI.dll?ViewItemitem=180482604103ssPageName=STRK:MESELX:IT decibel unit. Worked really well but no longer needed. Kb0wlf From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of David Jordan Sent: Monday, March 22, 2010 9:13 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Commercial Antenna for 2m Repeater Question Hi Folks, Our club has been given permission to use one of the Public Safety antennas for our 2m repeater. The antenna is a PD-220-3A 150.5-158.5MHz. Our repeater freq. is 146.745. The antenna is fed with some nice looking Cell Flex LCF-12-50 ju, hard-line. The PD-200 is one of those totally enclosed fiberglass antennas; we don't have funds to pay for a climb to take down or replace or tweak. Have two questions: We think we can live with the power loss if we build a coupler to match the inevitable high SWR. Can someone point us to a formula to estimate/calculate both the projected SWR and power loss, etc? WAGs R fine too. Is anyone aware of any 2m coupler projects that might work for this scenario? Our current repeater antenna is in the attic of one of our members garage at 25ft ASL.this antenna would be 425ft ASL.so even with losses we expect significantly better performance. 73, Dave WA3GIN No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.437 / Virus Database: 271.1.1/2756 - Release Date: 03/22/10 07:33:00
RE: [Repeater-Builder] Commercial Antenna for 2m Repeater Question
I'm sorry, I really don't know. My brief googling didn't yield any information. I've never put more than 75watts through it though. Kb0wlf From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of David Jordan Sent: Monday, March 22, 2010 11:45 AM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Commercial Antenna for 2m Repeater Question What is the power rating of the device? _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Chris Curtis Sent: Monday, March 22, 2010 11:07 AM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Commercial Antenna for 2m Repeater Question I've got a vhf-hi z-matcher up on ebay right now. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=180482604103ssPageName= STRK:MESELX:IT item=180482604103ssPageName=STRK:MESELX:IT decibel unit. Worked really well but no longer needed. Kb0wlf From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of David Jordan Sent: Monday, March 22, 2010 9:13 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Commercial Antenna for 2m Repeater Question Hi Folks, Our club has been given permission to use one of the Public Safety antennas for our 2m repeater. The antenna is a PD-220-3A 150.5-158.5MHz. Our repeater freq. is 146.745. The antenna is fed with some nice looking Cell Flex LCF-12-50 ju, hard-line. The PD-200 is one of those totally enclosed fiberglass antennas; we don't have funds to pay for a climb to take down or replace or tweak. Have two questions: We think we can live with the power loss if we build a coupler to match the inevitable high SWR. Can someone point us to a formula to estimate/calculate both the projected SWR and power loss, etc? WAGs R fine too. Is anyone aware of any 2m coupler projects that might work for this scenario? Our current repeater antenna is in the attic of one of our members garage at 25ft ASL.this antenna would be 425ft ASL.so even with losses we expect significantly better performance. 73, Dave WA3GIN No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.437 / Virus Database: 271.1.1/2756 - Release Date: 03/22/10 07:33:00 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.437 / Virus Database: 271.1.1/2756 - Release Date: 03/22/10 07:33:00
[Repeater-Builder] Re: Motorola R2002B Monitor - DOS
Hello Tim I Know this Place is Good http://www.cardinalelec.com/index.htm Good Luck Don KA9QJG --- In Repeater-Builder@yahoogroups.com, tahrens301 tahr...@... wrote: Well, it looks like the old R2002B took a drizzlin'. The mongo 6.2v Zener in the 5v overvoltage protect circuit is a dead short, leading me to believe there are more problems lurking in the power supply. Anybody have an 'extra' power supply, or know who works on these things? Thanks, Tim
[Repeater-Builder] Service Monitor (HP) calibration
Does anyone know of a place relatively close to CT (or NYC metro area) that does service monitor calibrations? Thanks! James
Re: [Repeater-Builder] Re:building a repeater out of 2 Kenwood TK-830G's
On 3/22/2010 10:25 AM, briansoehl wrote: By the way..any Kenwood radios that have the sufix G (as in TK-830G) are programmable for wide/narrow. The TK-830 is ONLY capable of wideband. That's the reason I choose the TK-830G. Yeah-I remember getting a bunch of 350G's. That was right as the mandate to include NB kicked in. tnx!
Re: [Repeater-Builder] Re: Welcome to Dayton (Partial Hamvention Primer)
Nate, Even though the video is almost 20 minutes in length, I watched it in it's entirety. It was really good. Others on the list should consider viewing it. Although it doesn't pertain to R-B, it sends a clear message of the state of the country. Thanks for sharing it. Don, KD9PT - Original Message - From: Nate Duehr To: Repeater-Builder@yahoogroups.com Sent: Sunday, March 21, 2010 5:14 PM Subject: Re: [Repeater-Builder] Re: Welcome to Dayton (Partial Hamvention Primer) On Mar 21, 2010, at 3:43 PM, wb6dgn wrote: Maybe we'll get Obamacare for autos and we'll all be saved. In the interest of not being kicked off the board, I'll keep my comments on that to myself (even though the last headline I read just made me do a lot of screaming!). I'll just share a video that covers it ... (and no, it's not a political video about healthcare.) Mike Rowe talks about his experiences filming the TV Show Dirty Jobs. http://www.ted.com/talks/mike_rowe_celebrates_dirty_jobs.html Takes a few minutes to get going, but it's great. If more people thought like Mike, they wouldn't need so much... and they'd be happier. -- Nate Duehr, WY0X n...@natetech.com
[Repeater-Builder] Added Phelps Dodge VHF Duplexer on eBay
Thought I'd forward this to the group - shipping isn't going to be nice as it's rather heavy but given the below average price I expect this go for, it's probably a decent deal. eBay item number 190382913448 Bidding starts at 99 cents...
Re: [Repeater-Builder] Service Monitor (HP) calibration
James Delancy wrote: Does anyone know of a place relatively close to CT (or NYC metro area) that does service monitor calibrations? While not close to your area, here's a place that will do it right, and treat you right: http://www.amtronix.com/ Rick specializes in HP / Agilent as well as others. Kevin Custer
[Repeater-Builder] Motorola experts/Maxtrac COR
Dear Group, I have a 800mhz maxtrac converted to 900mhz with the COR going out to pin 8. The controller would like to see a High when Active. The Maxtrac is by defaulted to low. In the menu it can be changed to high , but when I do its says Custom in the right hand corner. My question is.. since it is a custom setting and the default is LOW, if there is a power outage or glitch, will it go back to the default setting of LOW. I would like to set anything in the menu and think it is going to stay that way. Any body know for sure.. 73s and thanks!
Re: [Repeater-Builder] Motorola experts/Maxtrac COR
If you're looking at what I think you are, it only means the output/pin config is custom and the defaults will stick on power cycle (which is easy enough to test and confirm). Joe M. kq7dx wrote: Dear Group, I have a 800mhz maxtrac converted to 900mhz with the COR going out to pin 8. The controller would like to see a High when Active. The Maxtrac is by defaulted to low. In the menu it can be changed to high , but when I do its says Custom in the right hand corner. My question is.. since it is a custom setting and the default is LOW, if there is a power outage or glitch, will it go back to the default setting of LOW. I would like to set anything in the menu and think it is going to stay that way. Any body know for sure.. 73s and thanks! Yahoo! Groups Links
[Repeater-Builder] Re: Motorola MSR2000
Larry where are you located ? Tnx Jerry VE3 EXT
Re: [Repeater-Builder] Motorola experts/Maxtrac COR
Since this is programmed into the code Plug of the radio it should not change with a power outage. As for the Custom setting I believe this is to indicate the fact you have varied from the default setting for that acc plug menu. Randy On 2010-03-22, at 7:55 PM, kq7dx wrote: Dear Group, I have a 800mhz maxtrac converted to 900mhz with the COR going out to pin 8. The controller would like to see a High when Active. The Maxtrac is by defaulted to low. In the menu it can be changed to high , but when I do its says Custom in the right hand corner. My question is.. since it is a custom setting and the default is LOW, if there is a power outage or glitch, will it go back to the default setting of LOW. I would like to set anything in the menu and think it is going to stay that way. Any body know for sure.. 73s and thanks!
[Repeater-Builder] Exciter Filter in a UHF MSR2000 Station
A recent post to this list described the inability of the bandpass filter FL101 to pass frequencies in the 70cm Amateur band. The schematic diagram in the UHF MSR2000 service manual shows the four helicals to be adjustable, but it seems that the adjustments are concealed. Inasmuch as this filter prevents many Hams from retuning their stations down to 70cm, I would like to ask anyone with a spare MSR2000 UHF bandpass filter to allow me to see if it can be retuned. My intention is to first sweep the filter on a network analyzer to see what its stock response looks like. Then, if the owner of the filter allows it, I would see what is needed to gain access to the internal adjustments, and if retuning to the 70cm band is possible. I shall endeavor to return the filter to its owner after this investigation, either tuned as it was originally or tuned to favor 70cm. As you might expect, this science project will form the basis of a how-to article in the RBTIP. I don't have a UHF MSR2000 to experiment on, so I am hopeful that someone out there may have an idle UHF MSR2000 station that can serve as a source for the FL101 filter. 73, Eric Lemmon WB6FLY
