[Repeater-Builder] Re: [rfamplifiers] Return Loss Bridge Kit
It would be nice if *someone or many* on the list would be nice to respond to this. There were other discussions in the past about the RLB, but know one ever responded. I'm hoping that others looking on can gain an education. Thanks, Don, KD9PT - Original Message - From: Don Kupferschmidt To: Repeater-Builder@yahoogroups.com Sent: Tuesday, March 16, 2010 1:58 PM Subject: Fw: [rfamplifiers] Return Loss Bridge Kit Cross posted to rb list. - Original Message - From: Don Kupferschmidt To: rfamplifi...@yahoogroups.com Sent: Tuesday, March 16, 2010 1:57 PM Subject: Re: [rfamplifiers] Return Loss Bridge Kit Jeff Skipp, There's an EBAY auction right now selling Eagle RF return loss bridges for $489.00. Here's the link: http://cgi.ebay.com/EAGLE-RLB150X3-RETURN-LOSS-BRIDGE-5MHZ-1300MHZ_W0QQitemZ380211935016QQcmdZViewItemQQptZBI_Analyzers?hash=item588665b728 You know the old saying, you get what you pay for. Just wondering how the Eagle brand stacks up against the one that Amtronix is selling. Also, are there other comparable units out there for less money? Maybe the list members will chime in with ideas. 73, Don, KD9PT - Original Message - From: skipp025 To: rfamplifi...@yahoogroups.com Sent: Tuesday, March 16, 2010 11:18 AM Subject: [rfamplifiers] Return Loss Bridge Kit Group Member Jeff posted this at another location and the info is well worth sharing here. Amtronix (a Test Equipment Repair Facility near Buffalo, NY) is offering a kit form Return Loss Bridge. http://www.amtronix.com/rlb.htm ... and you'll notice the source/reference article/web page. http://www.wetterlin.org/sam/Reflection/Bridge_BalunPlusBeads.pdf I think this is a pretty neat idea/kit. cheers, skipp
RE: [Repeater-Builder] Controller order PayPal problems
Typically 2-4 weeks My experience as a buyer and seller using Paypal over their existence, before and after Ebay purchased them, is typically less than 24 hours to clear. In maybe 2-3 cases in over 500 transactions, it was held for 1 week or so and those were echecks.. Maybe they just like me. They have also fought for me on issues that went bad and found in my favor 100% of the time.. again usually in days.. not weeks. as they have specific time policies for arbitration.. and they are quite reasonable. Doug KD8B From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Don Kerouac Sent: Wednesday, March 17, 2010 1:46 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Controller order PayPal problems I have been burned by PayPal several times. The real reason they put the hold on your checks or hold money owed to you has nothing to do with your ratings and little to do with security. Basically, they control billions of dollars in transactions ever month through EBay. By holding the money even a few days (typically 2 to 4 weeks), PayPal makes millions in free interest on your money (your interest, actually). There is little regulation in the industry and since EBay owns PayPal, they can pretty much do as they please with your money and you can just lump it. I'm a capitalist and I hate unnecessary government regulation and any form of socialism. However, I don't see any change soon as these guys are cozy with legislators. Remember, next election, use the NRA method of voting.Never Re-elect Anyone! 73, Don K9NR E-mail message checked by Spyware Doctor (7.0.0.514) Database version: 6.14570 http://www.pctools.com/spyware-doctor-antivirus/ http://www.pctools.com/en/spyware-doctor-antivirus/ image001.jpgimage002.jpg
Re: [Repeater-Builder] Re: [rfamplifiers] Return Loss Bridge Kit
Don, I cannot speak to the Amtronix, but I use an Eagle RLB150 and can say without reservation that it is an excellent product. I use almost daily for tuning various types of cavities. In fact if you buy an Aeroflex (formerly IFR) radio test set, and order the RLB option what you get is an Eagle. lh On Wed, Mar 17, 2010 at 3:03 AM, Don Kupferschmidt dkupf...@sbcglobal.netwrote: It would be nice if *someone or many* on the list would be nice to respond to this. There were other discussions in the past about the RLB, but know one ever responded. I'm hoping that others looking on can gain an education. Thanks, Don, KD9PT - Original Message - *From:* Don Kupferschmidt dkupf...@sbcglobal.net *To:* Repeater-Builder@yahoogroups.com *Sent:* Tuesday, March 16, 2010 1:58 PM *Subject:* Fw: [rfamplifiers] Return Loss Bridge Kit Cross posted to rb list. - Original Message - *From:* Don Kupferschmidt dkupf...@sbcglobal.net *To:* rfamplifi...@yahoogroups.com *Sent:* Tuesday, March 16, 2010 1:57 PM *Subject:* Re: [rfamplifiers] Return Loss Bridge Kit Jeff Skipp, There's an EBAY auction right now selling Eagle RF return loss bridges for $489.00. Here's the link: http://cgi.ebay.com/EAGLE-RLB150X3-RETURN-LOSS-BRIDGE-5MHZ-1300MHZ_W0QQitemZ380211935016QQcmdZViewItemQQptZBI_Analyzers?hash=item588665b728 You know the old saying, you get what you pay for. Just wondering how the Eagle brand stacks up against the one that Amtronix is selling. Also, are there other comparable units out there for less money? Maybe the list members will chime in with ideas. 73, Don, KD9PT - Original Message - *From:* skipp025 skipp...@yahoo.com *To:* rfamplifi...@yahoogroups.com *Sent:* Tuesday, March 16, 2010 11:18 AM *Subject:* [rfamplifiers] Return Loss Bridge Kit Group Member Jeff posted this at another location and the info is well worth sharing here. Amtronix (a Test Equipment Repair Facility near Buffalo, NY) is offering a kit form Return Loss Bridge. http://www.amtronix.com/rlb.htm ... and you'll notice the source/reference article/web page. http://www.wetterlin.org/sam/Reflection/Bridge_BalunPlusBeads.pdf I think this is a pretty neat idea/kit. cheers, skipp
Re: [Repeater-Builder] Controller order PayPal problems
On 3/17/2010 1:45 AM, Don Kerouac wrote: I have been burned by PayPal several times. The real reason they put the hold on your checks or hold money owed to you has nothing to do with your ratings and little to do with security. Basically, they control billions of dollars in transactions ever month through EBay. By holding the money even a few days (typically 2 to 4 weeks), PayPal makes millions in free interest on your money (your interest, actually). There is little regulation in the industry and since EBay owns PayPal, they can pretty much do as they please with your money and you can just lump it. I'm a capitalist and I hate unnecessary government regulation and any form of socialism. However, I don't see any change soon as these guys are cozy with legislators. I refuse to use paypal due to privacy concerns (they have been known to sell personal information in the past.) This is just more ammo against using them. Frankly, if someone won't take a USPS money order, then they just don't want to sell. Remember, next election, use the NRA method of voting.Never Re-elect Anyone! 73, Don K9NR LOL! I move that a None of the above box be added! If the largest percentage goes to that, then none of the people running are elected, nor can they ever be elected-ever.
[Repeater-Builder] Re: [rfamplifiers] Return Loss Bridge Kit
First thing I would say is that if Rick is selling it, assume it works. I run an Eagle unit and would be glad to do comparison testing if someone would like. I have run a number of tests with the Eagle on various pieces of equipment and could repeat some of the same tests with the Amtronix unit. The Eagle unit came in a complete kit for the HP service monitor including cables, precision load and short and two attenuators. http://www.eagle-1st.com/kits.nsf/F221!OpenFrameSet My experience with the Eagle is also tied to the RFT-1000 program / HP service monitor. http://aa9nv.r2i.net/HP8924C.htm The Eagle unit has performed flawlessly on the HP and the IFR service monitors even after traveling between DC and Wisconsin on many trips. Should buy Rick's unit and leave it up North. :) Travis AA9NV --- In Repeater-Builder@yahoogroups.com, Don Kupferschmidt dkupf...@... wrote: It would be nice if *someone or many* on the list would be nice to respond to this. There were other discussions in the past about the RLB, but know one ever responded. I'm hoping that others looking on can gain an education. Thanks, Don, KD9PT - Original Message - From: Don Kupferschmidt To: Repeater-Builder@yahoogroups.com Sent: Tuesday, March 16, 2010 1:58 PM Subject: Fw: [rfamplifiers] Return Loss Bridge Kit Cross posted to rb list. - Original Message - From: Don Kupferschmidt To: rfamplifi...@yahoogroups.com Sent: Tuesday, March 16, 2010 1:57 PM Subject: Re: [rfamplifiers] Return Loss Bridge Kit Jeff Skipp, There's an EBAY auction right now selling Eagle RF return loss bridges for $489.00. Here's the link: http://cgi.ebay.com/EAGLE-RLB150X3-RETURN-LOSS-BRIDGE-5MHZ-1300MHZ_W0QQitemZ380211935016QQcmdZViewItemQQptZBI_Analyzers?hash=item588665b728 You know the old saying, you get what you pay for. Just wondering how the Eagle brand stacks up against the one that Amtronix is selling. Also, are there other comparable units out there for less money? Maybe the list members will chime in with ideas. 73, Don, KD9PT - Original Message - From: skipp025 To: rfamplifi...@yahoogroups.com Sent: Tuesday, March 16, 2010 11:18 AM Subject: [rfamplifiers] Return Loss Bridge Kit Group Member Jeff posted this at another location and the info is well worth sharing here. Amtronix (a Test Equipment Repair Facility near Buffalo, NY) is offering a kit form Return Loss Bridge. http://www.amtronix.com/rlb.htm ... and you'll notice the source/reference article/web page. http://www.wetterlin.org/sam/Reflection/Bridge_BalunPlusBeads.pdf I think this is a pretty neat idea/kit. cheers, skipp
Re: [Repeater-Builder] E.F. JOHNSON radio
A slight word of caution: there were 3 versions of the Challengers: one that used a DOS PC to program, one that used a Commodore 64 to program, and one that used...I think either a TRS-80 or a Timex-Sinclair to program. If you have one of the last 2, there were special modules for interfacing to the radio-good luck finding one! Most likely you'd have to change out the logic board for a PC-based board. There weren't a LOT of them, they were only made early on, but they are out there (a former employer had quite a few C-64 style, because he was a Commodore fan.) On 3/16/2010 10:32 PM, Doug wrote: At 06:03 PM 16/03/2010, you wrote: EF Johnson Challenger 7152A? VHF 55W http://www.repeater-builder.com/johnson/efj-index.html http://www.ccdx.org/zedyx/mods/challenger.htm On Tue, Mar 16, 2010 at 3:43 PM, Dougap...@sasktel.net wrote: I have a vhf radio presently on 162mhz made by E.F Johnson. It is a small unit, but I can't find a combo. It has a FCC ID ATH90F2427152. The number is very faded and hard to read. Can anyone tell me anything about these. Are the useful for hams and how can they be programmed. --- I think you are right on.. I googled 7152 and found a chap who was doing the uhf version. The radios look exactly the same. So I guess most of the pin outs and mic connections will be also. Now I have to find a schematic and a little info on how do you program them... Thanks very much.. 73 Doug
Re: [Repeater-Builder] Re: [rfamplifiers] Return Loss Bridge Kit
Some time ago, someone posted about making their own return loss bridge using an HP directional coupler. I thought that I'd saved the information, but cannot find it. The cost was reported to be less than $50 using a surplus coupler. Chuck WB2EDV - On Wed, Mar 17, 2010 at 3:03 AM, Don Kupferschmidt dkupf...@sbcglobal.net wrote: It would be nice if *someone or many* on the list would be nice to respond to this. There were other discussions in the past about the RLB, but know one ever responded. I'm hoping that others looking on can gain an education. Thanks, Don, KD9PT Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/Repeater-Builder/join (Yahoo! ID required) * To change settings via email: repeater-builder-dig...@yahoogroups.com repeater-builder-fullfeatu...@yahoogroups.com * To unsubscribe from this group, send an email to: repeater-builder-unsubscr...@yahoogroups.com * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Re: [rfamplifiers] Return Loss Bridge Kit
How about this. I'll ask Rick if he'll send me a demo unit, and I'll compare it to my Eagle, using my VNA as the reference (Agilent E5070B). --- Jeff First thing I would say is that if Rick is selling it, assume it works. I run an Eagle unit and would be glad to do comparison testing if someone would like. I have run a number of tests with the Eagle on various pieces of equipment and could repeat some of the same tests with the Amtronix unit. The Eagle unit came in a complete kit for the HP service monitor including cables, precision load and short and two attenuators. http://www.eagle-1st.com/kits.nsf/F221 http://www.eagle-1st.com/kits.nsf/F221 !OpenFrameSet My experience with the Eagle is also tied to the RFT-1000 program / HP service monitor. http://aa9nv.r2i.net/HP8924C.htm http://aa9nv.r2i.net/HP8924C.htm The Eagle unit has performed flawlessly on the HP and the IFR service monitors even after traveling between DC and Wisconsin on many trips. Should buy Rick's unit and leave it up North. :) Travis AA9NV --- In Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com , Don Kupferschmidt dkupf...@... wrote: It would be nice if *someone or many* on the list would be nice to respond to this. There were other discussions in the past about the RLB, but know one ever responded. I'm hoping that others looking on can gain an education. Thanks, Don, KD9PT - Original Message - From: Don Kupferschmidt To: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com Sent: Tuesday, March 16, 2010 1:58 PM Subject: Fw: [rfamplifiers] Return Loss Bridge Kit Cross posted to rb list. - Original Message - From: Don Kupferschmidt To: rfamplifi...@yahoogroups.com mailto:rfamplifiers%40yahoogroups.com Sent: Tuesday, March 16, 2010 1:57 PM Subject: Re: [rfamplifiers] Return Loss Bridge Kit Jeff Skipp, There's an EBAY auction right now selling Eagle RF return loss bridges for $489.00. Here's the link: http://cgi.ebay.com/EAGLE-RLB150X3-RETURN-LOSS-BRIDGE-5MHZ-130 0MHZ_W0QQitemZ380211935016QQcmdZViewItemQQptZBI_Analyzers? hash=item588665b728 http://cgi.ebay.com/EAGLE-RLB150X3-RETURN-LOSS-BRIDGE-5MHZ-13 00MHZ_W0QQitemZ380211935016QQcmdZViewItemQQptZBI_Analyzers? hash=item588665b728 You know the old saying, you get what you pay for. Just wondering how the Eagle brand stacks up against the one that Amtronix is selling. Also, are there other comparable units out there for less money? Maybe the list members will chime in with ideas. 73, Don, KD9PT - Original Message - From: skipp025 To: rfamplifi...@yahoogroups.com mailto:rfamplifiers%40yahoogroups.com Sent: Tuesday, March 16, 2010 11:18 AM Subject: [rfamplifiers] Return Loss Bridge Kit Group Member Jeff posted this at another location and the info is well worth sharing here. Amtronix (a Test Equipment Repair Facility near Buffalo, NY) is offering a kit form Return Loss Bridge. http://www.amtronix.com/rlb.htm http://www.amtronix.com/rlb.htm ... and you'll notice the source/reference article/web page. http://www.wetterlin.org/sam/Reflection/Bridge_BalunPlusBeads. pdf http://www.wetterlin.org/sam/Reflection/Bridge_BalunPlusBeads.pdf I think this is a pretty neat idea/kit. cheers, skipp No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.733 / Virus Database: 271.1.1/2748 - Release Date: 03/17/10 03:33:00
Re: [Repeater-Builder] Re: [rfamplifiers] Return Loss Bridge Kit
That would be ideal. Then everyone would know how the Eagle stands up against a serious piece of test equipment, as well as how Rick's model does. I'm betting that Rick's will hold it's own against the Eagle (which I've always thought was overpriced.) Chuck WB2EDV - Original Message - From: Jeff DePolo j...@broadsci.com To: Repeater-Builder@yahoogroups.com Sent: Wednesday, March 17, 2010 9:32 AM Subject: RE: [Repeater-Builder] Re: [rfamplifiers] Return Loss Bridge Kit How about this. I'll ask Rick if he'll send me a demo unit, and I'll compare it to my Eagle, using my VNA as the reference (Agilent E5070B). --- Jeff
Re: [Repeater-Builder] E.F. JOHNSON radio
At 07:27 AM 17/03/2010, you wrote: A slight word of caution: there were 3 versions of the Challengers: one that used a DOS PC to program, one that used a Commodore 64 to program, and one that used...I think either a TRS-80 or a Timex-Sinclair to program. If you have one of the last 2, there were special modules for interfacing to the radio-good luck finding one! Most likely you'd have to change out the logic board for a PC-based board. There weren't a LOT of them, they were only made early on, but they are out there (a former employer had quite a few C-64 style, because he was a Commodore fan.) On 3/16/2010 10:32 PM, Doug wrote: At 06:03 PM 16/03/2010, you wrote: EF Johnson Challenger 7152A? VHF 55W http://www.repeater-builder.com/johnson/efj-index.html http://www.ccdx.org/zedyx/mods/challenger.htm On Tue, Mar 16, 2010 at 3:43 PM, Dougap...@sasktel.net wrote: I have a vhf radio presently on 162mhz made by E.F Johnson. It is a small unit, but I can't find a combo. It has a FCC ID ATH90F2427152. The number is very faded and hard to read. Can anyone tell me anything about these. Are the useful for hams and how can they be programmed. --- I think you are right on.. I googled 7152 and found a chap who was doing the uhf version. The radios look exactly the same. So I guess most of the pin outs and mic connections will be also. Now I have to find a schematic and a little info on how do you program them... Thanks very much.. 73 Doug By looking at the serial number, it appears the units are a 7164. Now I have to find the programming software. It runs under dos I understand.. Thanks Doug
Re: [Repeater-Builder] Controller order PayPal problems
Didn't eBay ban this method as they werent getting their double dip through Paypal? I refuse to use paypal due to privacy concerns (they have been known to sell personal information in the past.) This is just more ammo against using them. Frankly, if someone won't take a USPS money order, then they just don't want to sell.
RE: [Repeater-Builder] Repeater /Crossband Help
Don, There is an article on the Repeater-Builder web site (not the Yahoogroup page) about how to disable the always on channel element in the Micor exciter. I think this is what you need to eliminate your problem. It is described in this article: http://www.repeater-builder.com/micor/stationcontrol.html Look in the section titled, Keyed Exciter Channel Element Modification Also look here: http://www.repeater-builder.com/micor/stationmod.html about half way down the article, under the heading Modifications relating to the chassis and find the subsection titled For the Transmit Exciter you have a choice: I also thought there was a more comprehensive article describing the issue you are experiencing, but for the life of me, I cannot find it right now... Mark - N9WYS -Original Message- From: Repeater-Builder@yahoogroups.com On Behalf Of ka9qjg1 Hello hope Everyone is doing well, I have ran into a little Problem and thought I would get some suggestions on how to resolve it I have a Motorola Micor 224.40 repeater built By Scott N3XCC , here on the Repeater builder group; it has worked great for over 3 Yrs. I have a Few Hams in the area who do not have 220 but the know and would like to talk to some of their friends who do , So I took My Kenwood TM-631 Duel band found a Local 2 Meter Simplex that Myself and a few others have been using for over 20 Yrs . I turned the 220 Transmit down as low as I could get it which is 2 Watts That goes into a Bird 100Watt Dummy load . The 2 Meter side I have set a 10 watts and a 3 In muffing Fan that runs while Transmitting It runs nice and Cool , Everyone likes it and it works fine Except that is has been keying up on the 2 Meter side off and on sometimes as long as 3 4 Min Unfortunately I had disabled the TOT And on this Radio you can only have a PL On one side and I need that on the 220 side . What I think is going on is that the Micor 220 has a Very small signal on the output always being transmitted. No big deal except for what I am trying to do and that will random bring up the 2 Meter Transmit. This radio has the 6 In Pigtails coming out to a SO-239 I wrapped them with Foil and Moved the Duel band radio about 10 ft away from the Repeater which is in a 4 ft Motorola case . The link is being Id When the Repeater is being used. Any thoughts will be great appreciated, The hams using this really like it that don't have 220 they can now use their 2 Meter Mobile and Ht . Thanks Don KA9QJG
RE: [Repeater-Builder] Controller order PayPal problems
Can someone tell me where the PayPal complaint list is... I have a repeater builder question! J From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of DCFluX Sent: Wednesday, March 17, 2010 10:13 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Controller order PayPal problems Didn't eBay ban this method as they werent getting their double dip through Paypal? I refuse to use paypal due to privacy concerns (they have been known to sell personal information in the past.) This is just more ammo against using them. Frankly, if someone won't take a USPS money order, then they just don't want to sell. Since 1974, the award-winning Alpert JFCS has helped families of all faiths throughout most of Palm Beach County, FL, via counseling, seniors services, residences for the disabled, mentoring children, support groups and a lot more. SOLUTIONS FOR LIVING www.JFCSonline.com Please take note of our new website and E-Mail Addresses. Please update your contacts ASAP. . NOTICE: This e-mail message and all attachments transmitted with it are intended solely for the use of the addressee and may contain legally privileged and confidential information. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, copying, or other use of this message or its attachments is strictly prohibited. If you have received this message in error, please notify the sender immediately by replying to this message and please delete it from your computer. Since 1974, the award-winning Alpert JFCS has helped families of all faiths throughout most of Palm Beach County, FL, via counseling, seniors services, residences for the disabled, mentoring children, support groups and a lot more. SOLUTIONS FOR LIVING www.JFCSonline.com Please take note of our new website and E-Mail Addresses. Please update your contacts ASAP. . NOTICE: This e-mail message and all attachments transmitted with it are intended solely for the use of the addressee and may contain legally privileged and confidential information. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, copying, or other use of this message or its attachments is strictly prohibited. If you have received this message in error, please notify the sender immediately by replying to this message and please delete it from your computer. image001.jpgimage002.jpg
[Repeater-Builder] Antenna Paint
I picked up a used Telewave antenna ANT150F6-2. It has a minor case of the fiberglass fuzzies and most of the blue paint is gone as it has been in the elements for 15 years. Should I paint it, apply a cote of resin, or just leave it alone? -- Tim, WD6AWP
Re: [Repeater-Builder] Antenna Paint
If you decide to paint it, Rustolium makes a spray can paint specifically for use on plastic (says so on the front of the can) that really works well. It comes in lots of colors. Several years ago, I used some to hide some new fiber glass antennasthe paint is still on---no white showing yet. I tested the paint for RF loss by spraying some on a plastic bag which I put into a microwave ovenabsolutely no heating. Scott - Original Message - From: Tim - WD6AWP To: Repeater-Builder@yahoogroups.com Sent: Wednesday, March 17, 2010 8:38 AM Subject: [Repeater-Builder] Antenna Paint I picked up a used Telewave antenna ANT150F6-2. It has a minor case of the fiberglass fuzzies and most of the blue paint is gone as it has been in the elements for 15 years. Should I paint it, apply a cote of resin, or just leave it alone? -- Tim, WD6AWP
RE: [Repeater-Builder] Antenna Paint
Marine epoxy paint. 73 Gary K4FMX -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of Tim - WD6AWP Sent: Wednesday, March 17, 2010 11:38 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Antenna Paint I picked up a used Telewave antenna ANT150F6-2. It has a minor case of the fiberglass fuzzies and most of the blue paint is gone as it has been in the elements for 15 years. Should I paint it, apply a cote of resin, or just leave it alone? -- Tim, WD6AWP Yahoo! Groups Links
[Repeater-Builder] Re:building a repeater out of 2 Kenwood TK-830G's
Re:building a repeater out of 2 Kenwood TK-830G's Why would you want to? Surplus Kenwood TKR-820 units are readily available for $300 and less. I have seen at least 30 sold in last 3 months on eBay. These purposes built units have the power supply, interface, BEEFY heat sinks for the TX RF transistors and sometimes even the UHF duplexer ! A few more talking points regarding the use of a TK-830 mobile RF Deck in Repeater Operation versus a TKR-820 The TKR-820 requires the use of the KPT-50 programmer, which not a lot of people have. I as a Kenwood Dealer happily sell them... but they are expensive unless you can find one used. In case you didn't notice... the TKR-820 Repeater RF Deck is also the TK-820 mobile radio mounted in a box. Portions of the circuit are of course different for the repeater but the chassis (heat sink) is pretty much the same animal. The normal internal Duplexer is just a flat-pack what a lot of people call a mobile style and having it inside the repeater chassis is not really a big deal. It's much better to replace the internal Duplexer with a more traditional full size BpBr unit, making the use of an external Preamp and RF Amplifier much more practical. Don't get me wrong... I have a fair number of TKR-720 and TKR-820 repeaters (and the TKB Base Stations) in operation. I'm just trying to toss out reasonable reasons why there is nothing wrong with making a repeater out of the TK-830/890 Mobile Radios and that running those radios at their rated output is normally not going to cause problems in most examples. In case some of you haven't noticed... many of the current desk top repeaters are pretty much mobile radios in a box, which is nothing new really. 50 cent plug... When Narrow Banding is officially jammed down our throats... I stock and sell the factory Narrow Band Kits for the TKR-720 and the TKR-820 Repeaters... that is all... Resume All-Skate, All Skate Slowly and Safe thanks cheers, skipp
RE: [Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire
_ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Jack Davis Sent: Wednesday, March 17, 2010 1:15 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire http://groups.yahoo.com/group/Repeater-Builder/message/98899;_ylc=X3oDMTJxM XBnc3YwBF9TAzk3MzU5NzE1BGdycElkAzEwNDE2OARncnBzcElkAzE3MDUwNjMxMDgEbXNnSWQDO Tg4OTkEc2VjA2Rtc2cEc2xrA3Ztc2cEc3RpbWUDMTI2ODgwMDcyMw-- Re: Copper pipe rather than 2/0 copper wire Posted by: Eric Lemmon mailto:wb6...@verizon.net?subject=%20re%3a%20copper%20pipe%20rather%20than% 202%2F0%20copper%20wire wb6...@verizon.net http://profiles.yahoo.com/wb6fly wb6fly Tue Mar 16, 2010 5:55 pm (PDT) Jesse, Not a good idea. Both NFPA 70 (the National Electrical Code) and NFPA 780 (the Lightning Protection Code) have strict requirements for wire sizes and connection methods. Neither grounding systems nor lightning protection systems may use a soldered connection in the circuit. Perhaps your best course of action is to understand the Code requirements, and construct your system accordingly. Keep in mind the fact that your insurance underwriter may deny any and all claims for damages due to lightning, if your system was constructed in a manner inconsistent with the applicable codes. 73, Eric Lemmon WB6FLY You dont need any solder joints with type K or L soft copper. The material comes is 60 or 100 foot rolls and you just flatten the ends and drill holes for mounting bolts and star washers. ½ inch soft copper is actually 5/8 inch OD and makes a great conductor. The material comes in size up to 2 inch but that gets pretty expensive. This pipe is designed to be buried in the ground so you can be assured it will stand up just fine outdoors. One caution is to anchor it down, swinging in the wind will cause it to break due to repeated flexing. All the normal bend radius for electrical conductors should be observed as lightning does not like to make sharp corners. Jack K6YC 5/8 OD gives you 1.96 inches (5/8 x 3.14) of surface area. 1 inch copper strap gives 2 inches of surface area. 2 inch copper strap gives you 4 inches surface area. Copper strap should be less expensive than copper tubing.__,_._,__ Why would you use copper tubing? 73 Gary K4FMX
RE: [Repeater-Builder] Controller order PayPal problems
I've been using Paypal since 1999 and have had absolutely no issues with them. Actually on a sale overseas, they credited me the payment, then 10 days later debited me because they could not access the foreign bank, then that was resolved and I was credited - twice! Paypal is part of the Wells Fargo Bank, so there is no fooling around. And, if they did sell your private information, then millions of people would have their banking information all over the net, and certainly hacked. This has never happened to me ever. And I am leery of on-line banking, but in over 10 years I have never had any reason to distrust Paypal. And they have phone support, unlike Ebay. The only reason Paypal may delay a payment is due to the funds from the sender not being available. Even a money order can be held by your bank for a few days. They now consider them as being a check due to all the fraud going around. That;s what my bank HSBC told me. They won't even accept a walmart type money order any more. Just my humble opinion. Regards Ian VA2IR
[Repeater-Builder] Motorola GM950 Mobile
Hello All, Would anyone happen to have a service manual to a Motorola GM950 mobile? Band split is not relevant as I'm specifically looking for the part number of that radio's antenna jac. Any help would be greatly appreciated. Thanks!! Adam N2ACF
Re: [Repeater-Builder] Controller order PayPal problems
On 3/17/2010 12:45 PM, va...@securenet.net wrote: I've been using Paypal since 1999 and have had absolutely no issues with them. Actually on a sale overseas, they credited me the payment, then 10 days later debited me because they could not access the foreign bank, then that was resolved and I was credited - twice! Paypal is part of the Wells Fargo Bank, so there is no fooling around. And, if they did sell your private information, then millions of people would have their banking information all over the net, and certainly hacked. And that has been happening... This has never happened to me ever. And I am leery of on-line banking, but in over 10 years I have never had any reason to distrust Paypal. And they have phone support, unlike Ebay. erm, uh, paypal IS ebay... The only reason Paypal may delay a payment is due to the funds from the sender not being available. Even a money order can be held by your bank for a few days. They now consider them as being a check due to all the fraud going around. That;s what my bank HSBC told me. They won't even accept a walmart type money order any more. You DO know that HSBC is the Bank of China, right? As in, the bank owned by the communist government?
Re: [Repeater-Builder] Re:building a repeater out of 2 Kenwood TK-830G's
On 3/17/2010 12:06 PM, skipp025 wrote: 50 cent plug... When Narrow Banding is officially jammed down our throats... I stock and sell the factory Narrow Band Kits for the TKR-720 and the TKR-820 Repeaters... 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. Someone would have to send a unit in after the mods and get it re-certified for 12.5 (or 11.0) bandwidth. You can bet Kenwood ain't gonna do it. This only applies to Part 90 frequencies, btw. Parts 22, 80, 95, and 97 aren't affected. Sorry...
Re: [Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire
On 3/17/2010 12:11 PM, Gary Schafer wrote: 5/8 OD gives you 1.96 inches (5/8 x 3.14) of surface area. 1 inch copper strap gives 2 inches of surface area. 2 inch copper strap gives you 4 inches surface area. Copper strap should be less expensive than copper tubing.__,_._,__ Why would you use copper tubing? Because it's cheaper and a lot easier to find. Many people probably already have some laying around scrap. Hardware stores don't carry copper strap. I know I would have to order it from someone like Tessco or someone else that sells tower site supplies.
Re: [Repeater-Builder] Controller order PayPal problems
Well anyone who divulges their name and or password thru some phishing email deserves to get caught. HSBC Canada is a Canadian Chartered bank. Yes, it is China based, but in the US - who do you think is financing your government debt? The Arabs and the Chinese. Lets close this topic now. Be well At 01:35 PM 3/17/2010, you wrote: On 3/17/2010 12:45 PM, mailto:va2ir%40securenet.netva...@securenet.net wrote: I've been using Paypal since 1999 and have had absolutely no issues with them. Actually on a sale overseas, they credited me the payment, then 10 days later debited me because they could not access the foreign bank, then that was resolved and I was credited - twice! Paypal is part of the Wells Fargo Bank, so there is no fooling around. And, if they did sell your private information, then millions of people would have their banking information all over the net, and certainly hacked. And that has been happening... This has never happened to me ever. And I am leery of on-line banking, but in over 10 years I have never had any reason to distrust Paypal. And they have phone support, unlike Ebay. erm, uh, paypal IS ebay... The only reason Paypal may delay a payment is due to the funds from the sender not being available. Even a money order can be held by your bank for a few days. They now consider them as being a check due to all the fraud going around. That;s what my bank HSBC told me. They won't even accept a walmart type money order any more. You DO know that HSBC is the Bank of China, right? As in, the bank owned by the communist government? No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.436 / Virus Database: 271.1.1/2752 - Release Date: 03/17/10 07:33:00
[Repeater-Builder] Re: [rfamplifiers] Return Loss Bridge Kit
Hoping not to sound to dumb I have an MFJ 269 (i know its not a precision instrument...) but at the hobby level is there any reason for me to think about building this thing? What does it do (even the $498 one) that my 269 dose not? (ignoring the precision issue) I ask in hoping to learn something more about radio and test equipment. Thanks Steve KB8STB --- In Repeater-Builder@yahoogroups.com, Don Kupferschmidt dkupf...@... wrote: It would be nice if *someone or many* on the list would be nice to respond to this. There were other discussions in the past about the RLB, but know one ever responded. I'm hoping that others looking on can gain an education. Thanks, Don, KD9PT
[Repeater-Builder] Re:building a repeater out of 2 Kenwood TK-830G's
wd8chl wd8...@... 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. Based on my direct in-person conversations with FCC Agents, simply reducing the transmit deviation to narrow band specifications doesn't violate the existing type acceptance and the resultant operation is in compliance with the narrow band rules. Doesn't really matter what receiver equipment changes were made. The same FCC Agents also acknowledge and the rules clearly state the emissions are the responsibility of the License Holder. I would expect and take the opinion that proper emission operation within legal narrow band standards using legacy type accepted land mobile equipment will not be a legality problem and have had that opinion confirmed more than once by FCC Agents, in fact once again last week at IWCE. Someone would have to send a unit in after the mods and get it re-certified for 12.5 (or 11.0) bandwidth. You can bet Kenwood ain't gonna do it. This only applies to Part 90 frequencies, btw. Parts 22, 80, 95, and 97 aren't affected. Sorry... Yeah, yeah.. based on my personal inquiries I expect the majority of people who get excited about Type Accepted legacy radio equipment properly operating narrow band will not be the FCC. I've never had nor would I expect an inspecting FCC Field Agent ask to see an equipment type acceptance cert/number. Being the responsible person as the License Holder I'm not going to now worry about a current type accepted transmitter now legally operating narrow band becoming illegal because it's not on an equipment list after a certain date. cheers, s. On 3/17/2010 12:06 PM, skipp025 wrote: 50 cent plug... When Narrow Banding is officially jammed down our throats... I stock and sell the factory Narrow Band Kits for the TKR-720 and the TKR-820 Repeaters...
[Repeater-Builder] Re: Return Loss Bridge
Regarding the recent return loss bridge posts and the RLB Kit being offered by Amtronix and other sources. These bridges are all variations on a Wheatstone bridge. In a classic Wheatstone bridge, you can ground two of the three ports. In the Agilent S-parameter test sets, they place the balun configuration in the RF source, and then the DUT and detector ports can both be grounded. In the Wetterlin design, he's chosen to float the detector side. A Wheatstone bridge for 50 ohms is two legs of 100 ohms in parallel, with the detector at the midway tap point on both sides. But, there's no reason it has to be that way. One leg has the unknown DUT in it. If you reduce the value of the top resistor on that side from 50 ohms down to, say, unity, then the resistors on the other leg now have to rise, and maintain the 50:1 R ratio that is required for balance. Ultimately, the whole thing devolves into what is known as the Breune Bridge, which is a Wheatstone bridge with very little loss between source and DUT and is what a high power SWR meter is made with. cheers, s.
[Repeater-Builder] Test
seems to be a long delay between posting messages and them showing up.
RE: [Repeater-Builder] Re: [rfamplifiers] Return Loss Bridge Kit
Rick said he'd send me one. He's in the midst of making some design improvements which he hopes will result in about 5 dB better directivity than the original design. He also said he's probably going to change to a type N connector for the DUT port (a good idea). He's about to ship the last of the stock he has, so it will be about two weeks before he gets me a unit for evaluation. --- Jeff WN3A -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Chuck Kelsey Sent: Wednesday, March 17, 2010 9:38 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: [rfamplifiers] Return Loss Bridge Kit That would be ideal. Then everyone would know how the Eagle stands up against a serious piece of test equipment, as well as how Rick's model does. I'm betting that Rick's will hold it's own against the Eagle (which I've always thought was overpriced.) Chuck WB2EDV - Original Message - From: Jeff DePolo j...@broadsci.com mailto:jd0%40broadsci.com To: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com Sent: Wednesday, March 17, 2010 9:32 AM Subject: RE: [Repeater-Builder] Re: [rfamplifiers] Return Loss Bridge Kit How about this. I'll ask Rick if he'll send me a demo unit, and I'll compare it to my Eagle, using my VNA as the reference (Agilent E5070B). --- Jeff No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.733 / Virus Database: 271.1.1/2748 - Release Date: 03/17/10 03:33:00
Re: [Repeater-Builder] Test
They're being intercepted and screened by ebay before posting. - Original Message - From: kc8gpd To: Repeater-Builder@yahoogroups.com Sent: Wednesday, March 17, 2010 1:06 PM Subject: [Repeater-Builder] Test seems to be a long delay between posting messages and them showing up.
RE: [Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire
-Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of wd8chl Sent: Wednesday, March 17, 2010 1:36 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire On 3/17/2010 12:11 PM, Gary Schafer wrote: 5/8 OD gives you 1.96 inches (5/8 x 3.14) of surface area. 1 inch copper strap gives 2 inches of surface area. 2 inch copper strap gives you 4 inches surface area. Copper strap should be less expensive than copper tubing.__,_._,__ Why would you use copper tubing? Because it's cheaper and a lot easier to find. Many people probably already have some laying around scrap. Hardware stores don't carry copper strap. I know I would have to order it from someone like Tessco or someone else that sells tower site supplies. A quick google search turns up this: http://www.dxengineering.com/Products.asp?ID=102SecID=51DeptID=19 2 inch strap for $1.83 per foot. Someone earlier said that 1/2 inch copper pipe cost around $2.20 per foot. If 1/2 inch pipe is really 5/8 inch outside diameter that would give you a surface area, as I said before, of 1.96 inches. 2 inch copper strap would give you a surface area of 4 inches. Better than twice the surface area of the pipe and less money. To get the same surface area with pipe as with copper strap you would have to pay about $4.50 per foot for pipe verses $1.96 for strap. Doesn't look cheaper to me. 73 Gary K4FMX
RE: [Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire
Here is another place to get copper strap even cheaper: http://www.gacopper.com/ $1.05 per foot for 2 inch strap. (.012 thickness) $1.70 per foot for 2 inch strap. (.022 thickness) 73 Gary K4FMX -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of Gary Schafer Sent: Wednesday, March 17, 2010 3:39 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of wd8chl Sent: Wednesday, March 17, 2010 1:36 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire On 3/17/2010 12:11 PM, Gary Schafer wrote: 5/8 OD gives you 1.96 inches (5/8 x 3.14) of surface area. 1 inch copper strap gives 2 inches of surface area. 2 inch copper strap gives you 4 inches surface area. Copper strap should be less expensive than copper tubing.__,_._,__ Why would you use copper tubing? Because it's cheaper and a lot easier to find. Many people probably already have some laying around scrap. Hardware stores don't carry copper strap. I know I would have to order it from someone like Tessco or someone else that sells tower site supplies. A quick google search turns up this: http://www.dxengineering.com/Products.asp?ID=102SecID=51DeptID=19 2 inch strap for $1.83 per foot. Someone earlier said that 1/2 inch copper pipe cost around $2.20 per foot. If 1/2 inch pipe is really 5/8 inch outside diameter that would give you a surface area, as I said before, of 1.96 inches. 2 inch copper strap would give you a surface area of 4 inches. Better than twice the surface area of the pipe and less money. To get the same surface area with pipe as with copper strap you would have to pay about $4.50 per foot for pipe verses $1.96 for strap. Doesn't look cheaper to me. 73 Gary K4FMX Yahoo! Groups Links
RE: [Repeater-Builder] Test
Did you send it via e-check? Sorry, my bad Kb0wlf -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of kc8gpd Sent: Wednesday, March 17, 2010 2:06 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Test seems to be a long delay between posting messages and them showing up. Yahoo! Groups Links No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.436 / Virus Database: 271.1.1/2734 - Release Date: 03/17/10 07:33:00
[Repeater-Builder] Re: Type Acceptance Requirement
Re: Type Acceptance Requirement Just one last thing to drone on about... during an in-shop discussion after my last Group post... it was just pointed out to me how there is clear and well established historical precedent for using current Type Accepted Equipment reconfigured for future narrow band operation. After all this is not the first time we've gone through this. Keyword Permakay cheers, s. skipp025 skipp...@... wrote: wd8chl wd8chl@ 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. Based on my direct in-person conversations with FCC Agents, simply reducing the transmit deviation to narrow band specifications doesn't violate the existing type acceptance and the resultant operation is in compliance with the narrow band rules. Doesn't really matter what receiver equipment changes were made. The same FCC Agents also acknowledge and the rules clearly state the emissions are the responsibility of the License Holder. I would expect and take the opinion that proper emission operation within legal narrow band standards using legacy type accepted land mobile equipment will not be a legality problem and have had that opinion confirmed more than once by FCC Agents, in fact once again last week at IWCE. Someone would have to send a unit in after the mods and get it re-certified for 12.5 (or 11.0) bandwidth. You can bet Kenwood ain't gonna do it. This only applies to Part 90 frequencies, btw. Parts 22, 80, 95, and 97 aren't affected. Sorry... Yeah, yeah.. based on my personal inquiries I expect the majority of people who get excited about Type Accepted legacy radio equipment properly operating narrow band will not be the FCC. I've never had nor would I expect an inspecting FCC Field Agent ask to see an equipment type acceptance cert/number. Being the responsible person as the License Holder I'm not going to now worry about a current type accepted transmitter now legally operating narrow band becoming illegal because it's not on an equipment list after a certain date. cheers, s. On 3/17/2010 12:06 PM, skipp025 wrote: 50 cent plug... When Narrow Banding is officially jammed down our throats... I stock and sell the factory Narrow Band Kits for the TKR-720 and the TKR-820 Repeaters...
[Repeater-Builder] Add removable antenna connector to older motorola DTR's
i have an older set of dtr's with the non removable antenna. i would like to add an sma jack to them so they are compatible with motorola 1/4 wave or 1/2 wave ht antenna's. i hate stubby antenna's. ht antenna's are compromised to begin with and stubby antenna's only make things worse.
Re: [Repeater-Builder] Controller order PayPal problems
On 3/17/2010 2:30 PM, va...@securenet.net wrote: Well anyone who divulges their name and or password thru some phishing email deserves to get caught. No-I was talking about paypal/ebay having that info and selling it. Not p/w's, but names, contact info, and at one point credit card numbers, although I think they got busted and can't do that-at least not for US users... HSBC Canada is a Canadian Chartered bank. Yes, it is China based, but in the US - who do you think is financing your government debt? The Arabs and the Chinese. Makes no more difference then the Canadian made Chrysler's/GM's/Ford's. Still a U.S. car. And yeah, I push the nat'l debt issue when I can-that's why I won't have anything to do with HSBC.
Re: [Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire
On 3/17/2010 3:47 PM, Gary Schafer wrote: Here is another place to get copper strap even cheaper: http://www.gacopper.com/ $1.05 per foot for 2 inch strap. (.012 thickness) $1.70 per foot for 2 inch strap. (.022 thickness) 73 Gary K4FMX Sorry-I don't have one of their stores in my neighborhood...
Re: [Repeater-Builder] Re:building a repeater out of 2 Kenwood TK-830G's
On 3/17/2010 2:45 PM, skipp025 wrote: wd8chlwd8...@... 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. Based on my direct in-person conversations with FCC Agents, simply reducing the transmit deviation to narrow band specifications doesn't violate the existing type acceptance and the resultant operation is in compliance with the narrow band rules. Doesn't really matter what receiver equipment changes were made. The same FCC Agents also acknowledge and the rules clearly state the emissions are the responsibility of the License Holder. I would expect and take the opinion that proper emission operation within legal narrow band standards using legacy type accepted land mobile equipment will not be a legality problem and have had that opinion confirmed more than once by FCC Agents, in fact once again last week at IWCE. This would go contrary to the official document that went out from Washington a few months back that specifically said that equipment not certified for 12.5 KHz bandwidth for Part 90 will not be legal. We've actually gone down this path before here, so it should be in the archives somewhere It was mostly directed at MastrII's, Micor's, and MSF's. Those have definitely been pooh-pooh'ed. Yeah, yeah.. based on my personal inquiries I expect the majority of people who get excited about Type Accepted legacy radio equipment properly operating narrow band will not be the FCC. I wouldn't bet my license on it...
Re: [Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire
Not that I think copper pipe is a good alternative to strap, but Gary's math is slightly off. If you are saying 2 inch strap has 4 inches of surface area by counting both sides of the strap, then you need to count both sides of the pipe. Inside and outside surfaces of a pipe equal to 5/8OD would be very close to the same surface area of a 2 inch strap of the same thickness. Might be ok for grounding a temporary setup or for ground radials on an HF antenna but I wouldn't want to gamble on insurance covering a station using flattened copper pipe as a grounding solution. - Original Message - From: Gary Schafer To: Repeater-Builder@yahoogroups.com Sent: Wednesday, March 17, 2010 11:11 AM Subject: RE: [Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire -- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Jack Davis Sent: Wednesday, March 17, 2010 1:15 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire Re: Copper pipe rather than 2/0 copper wire Posted by: Eric Lemmon wb6...@verizon.net wb6fly Tue Mar 16, 2010 5:55 pm (PDT) Jesse, Not a good idea. Both NFPA 70 (the National Electrical Code) and NFPA 780 (the Lightning Protection Code) have strict requirements for wire sizes and connection methods. Neither grounding systems nor lightning protection systems may use a soldered connection in the circuit. Perhaps your best course of action is to understand the Code requirements, and construct your system accordingly. Keep in mind the fact that your insurance underwriter may deny any and all claims for damages due to lightning, if your system was constructed in a manner inconsistent with the applicable codes. 73, Eric Lemmon WB6FLY You don't need any solder joints with type K or L soft copper. The material comes is 60 or 100 foot rolls and you just flatten the ends and drill holes for mounting bolts and star washers. ½ inch soft copper is actually 5/8 inch OD and makes a great conductor. The material comes in size up to 2 inch but that gets pretty expensive. This pipe is designed to be buried in the ground so you can be assured it will stand up just fine outdoors. One caution is to anchor it down, swinging in the wind will cause it to break due to repeated flexing. All the normal bend radius for electrical conductors should be observed as lightning does not like to make sharp corners. Jack K6YC 5/8 OD gives you 1.96 inches (5/8 x 3.14) of surface area. 1 inch copper strap gives 2 inches of surface area. 2 inch copper strap gives you 4 inches surface area. Copper strap should be less expensive than copper tubing.__,_._,__ Why would you use copper tubing? 73 Gary K4FMX
Re: [Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire
Their store comes up right in my computer room ;-) Chuck WB2EDV - Original Message - From: wd8chl wd8...@gmail.com To: Repeater-Builder@yahoogroups.com Sent: Wednesday, March 17, 2010 4:43 PM Subject: Re: [Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire On 3/17/2010 3:47 PM, Gary Schafer wrote: Here is another place to get copper strap even cheaper: http://www.gacopper.com/ $1.05 per foot for 2 inch strap. (.012 thickness) $1.70 per foot for 2 inch strap. (.022 thickness) 73 Gary K4FMX Sorry-I don't have one of their stores in my neighborhood...
RE: [Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire
Horse dead now. Back to repeaters? Mike WM4B From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Chuck Kelsey Sent: Wednesday, March 17, 2010 4:58 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire Their store comes up right in my computer room ;-) Chuck WB2EDV - Original Message - From: wd8chl wd8...@gmail.com mailto:wd8chl%40gmail.com To: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com Sent: Wednesday, March 17, 2010 4:43 PM Subject: Re: [Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire On 3/17/2010 3:47 PM, Gary Schafer wrote: Here is another place to get copper strap even cheaper: http://www.gacopper.com/ $1.05 per foot for 2 inch strap. (.012 thickness) $1.70 per foot for 2 inch strap. (.022 thickness) 73 Gary K4FMX Sorry-I don't have one of their stores in my neighborhood...
RE: [Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire
The math is right. RF will not flow on the inside of a tube. It acts as a waveguide beyond cutoff. 73 Gary K4FMX _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Kirk Mefford Sent: Wednesday, March 17, 2010 4:49 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire Not that I think copper pipe is a good alternative to strap, but Gary's math is slightly off. If you are saying 2 inch strap has 4 inches of surface area by counting both sides of the strap, then you need to count both sides of the pipe. Inside and outside surfaces of a pipe equal to 5/8OD would be very close to the same surface area of a 2 inch strap of the same thickness. Might be ok for grounding a temporary setup or for ground radials on an HF antenna but I wouldn't want to gamble on insurance covering a station using flattened copper pipe as a grounding solution. - Original Message - From: Gary Schafer mailto:gascha...@comcast.net To: Repeater-Builder@yahoogroups.com Sent: Wednesday, March 17, 2010 11:11 AM Subject: RE: [Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Jack Davis Sent: Wednesday, March 17, 2010 1:15 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire http://groups.yahoo.com/group/Repeater-Builder/message/98899;_ylc=X3oDMTJxM XBnc3YwBF9TAzk3MzU5NzE1BGdycElkAzEwNDE2OARncnBzcElkAzE3MDUwNjMxMDgEbXNnSWQDO Tg4OTkEc2VjA2Rtc2cEc2xrA3Ztc2cEc3RpbWUDMTI2ODgwMDcyMw-- Re: Copper pipe rather than 2/0 copper wire Posted by: Eric Lemmon mailto:wb6...@verizon.net%20 wb6...@verizon.net http://profiles.yahoo.com/wb6fly wb6fly Tue Mar 16, 2010 5:55 pm (PDT) Jesse, Not a good idea. Both NFPA 70 (the National Electrical Code) and NFPA 780 (the Lightning Protection Code) have strict requirements for wire sizes and connection methods. Neither grounding systems nor lightning protection systems may use a soldered connection in the circuit. Perhaps your best course of action is to understand the Code requirements, and construct your system accordingly. Keep in mind the fact that your insurance underwriter may deny any and all claims for damages due to lightning, if your system was constructed in a manner inconsistent with the applicable codes. 73, Eric Lemmon WB6FLY You dont need any solder joints with type K or L soft copper. The material comes is 60 or 100 foot rolls and you just flatten the ends and drill holes for mounting bolts and star washers. ½ inch soft copper is actually 5/8 inch OD and makes a great conductor. The material comes in size up to 2 inch but that gets pretty expensive. This pipe is designed to be buried in the ground so you can be assured it will stand up just fine outdoors. One caution is to anchor it down, swinging in the wind will cause it to break due to repeated flexing. All the normal bend radius for electrical conductors should be observed as lightning does not like to make sharp corners. Jack K6YC
[Repeater-Builder] R100 TX power Help
Hi Guys, I'm newbie in this list and I need help... I'm trying to reprogramming a MCR100 (MAL43XXX series ) to a 2m repeater: 1) I Have change all the frequency data with the r100 software with success; 2) I have tune the RX VCO (L201) to a maximum of 4.35 Volts DC (The motorola manual claims to be 7.0V DC) but it's working :-); 3) I have tune the TX VCO to a maximum of 7.40 Volts and the repeater TX seems to work but with only a few milliwatts of output... Yes, The problem is the power!:-( I have turn the R463,R453 and R455 to full power (CW) but it doesn't I have 1.984 Volts DC max in R463(test point CV) (and R477 too) What I have miss? I don't find any more tuning procedures in the motorola service manual... Any help would be fully appreciated.. 73 Carlos
Re: [Repeater-Builder] Re: Copper pipe rather than 2/0 copper wire
Gary Schafer wrote: The math is right. RF will not flow on the inside of a tube. It acts as a “waveguide beyond cutoff”. And gets even more exciting when the outside is carrying a high current fault but the inside is filled with moisture. Matthew Kaufman Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/Repeater-Builder/join (Yahoo! ID required) * To change settings via email: repeater-builder-dig...@yahoogroups.com repeater-builder-fullfeatu...@yahoogroups.com * To unsubscribe from this group, send an email to: repeater-builder-unsubscr...@yahoogroups.com * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: Type Accepted Legacy Land Mobile Radio Equipment
I would expect and take the opinion that proper emission operation within legal narrow band standards using legacy type accepted land mobile equipment will not be a legality problem and have had that opinion confirmed more than once by FCC Agents, in fact once again last week at IWCE. This would go contrary to the official document that went out from Washington a few months back that specifically said that equipment not certified for 12.5 KHz bandwidth for Part 90 will not be legal. We've actually gone down this path before here, so it should be in the archives somewhere It was mostly directed at MastrII's, Micor's, and MSF's. Those have definitely been pooh-pooh'ed. Which obviously goes contrary to previous historical legal precedent established some decades back. Imagine the scenario that a US Government Agency might actually put out contradictory information. s.
[Repeater-Builder] Re: Repeater /Crossband Help
Thanks for the thoughts on My little Cross band/Repeater project , I think I will just quit trying to reinvent the Wheel and take My Old Midland 13-509 220 rig and a Motorola Maxtrac and make My own set up with a Pl on Both . That should solve my problem The Old Midland can be turned down to less than a watt. And the Maxtrac can run all day on 25 Watts and a fan. PS Sorry if this Went out 2 times Having E-Mail Probs Thanks Don KA9QJG I tightened up the SQ And moved the Unit over more from the Repeater , But now it is a Lot harder to get in to But at Least it is NOT Locking up . PS Thanks Mark this is the Mobile Micor I don't know if that is the same , Anyway I need a Better Quality receiver than a Ham Rig anyway and As We know Motorola , Motorola , Motorola Yes I like MOTOROLA Lol From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Mark Sent: Wednesday, March 17, 2010 10:15 AM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Repeater /Crossband Help Don, There is an article on the Repeater-Builder web site (not the Yahoogroup page) about how to disable the always on channel element in the Micor exciter. I think this is what you need to eliminate your problem. It is described in this article: http://www.repeater-builder.com/micor/stationcontrol.html Look in the section titled, Keyed Exciter Channel Element Modification Also look here: http://www.repeater-builder.com/micor/stationmod.html about half way down the article, under the heading Modifications relating to the chassis and find the subsection titled For the Transmit Exciter you have a choice: I also thought there was a more comprehensive article describing the issue you are experiencing, but for the life of me, I cannot find it right now... Mark - N9WYS -Original Message- From: Repeater-Builder@yahoogroups.com On Behalf Of ka9qjg1 Hello hope Everyone is doing well, I have ran into a little Problem and thought I would get some suggestions on how to resolve it I have a Motorola Micor 224.40 repeater built By Scott N3XCC , here on the Repeater builder group; it has worked great for over 3 Yrs. I have a Few Hams in the area who do not have 220 but the know and would like to talk to some of their friends who do , So I took My Kenwood TM-631 Duel band found a Local 2 Meter Simplex that Myself and a few others have been using for over 20 Yrs . I turned the 220 Transmit down as low as I could get it which is 2 Watts That goes into a Bird 100Watt Dummy load . The 2 Meter side I have set a 10 watts and a 3 In muffing Fan that runs while Transmitting It runs nice and Cool , Everyone likes it and it works fine Except that is has been keying up on the 2 Meter side off and on sometimes as long as 3 4 Min Unfortunately I had disabled the TOT And on this Radio you can only have a PL On one side and I need that on the 220 side . What I think is going on is that the Micor 220 has a Very small signal on the output always being transmitted. No big deal except for what I am trying to do and that will random bring up the 2 Meter Transmit. This radio has the 6 In Pigtails coming out to a SO-239 I wrapped them with Foil and Moved the Duel band radio about 10 ft away from the Repeater which is in a 4 ft Motorola case . The link is being Id When the Repeater is being used. Any thoughts will be great appreciated, The hams using this really like it that don't have 220 they can now use their 2 Meter Mobile and Ht . Thanks Don KA9QJG
[Repeater-Builder] FS: Return Loss Bridge AND HP8924C service monitor
Speaking of return loss bridges; I'm selling my service monitor. A 60 watt option 8924c with a really nice return loss bridge. Ebay item: 180482592507 There's a ton of other stuff but that's the best buy in the bunch. Thanks for the bandwidth. Kb0wlf
