[Repeater-Builder] Sinclair antennas suggestions
What Sinclair antenna would be a match to the db420? Anyone know a ball park figure on pricing? Any dealer suggestions to deal with? The suggestion in earlier post mentioned that Sinclair might custom cut a vhf / uhf style antenna...something like what the db314 is. Curious also if anyone has had a Sinclair custom built before. Other dc grounded antenna suggestions are welcomed too. Thanks! Robert KD4YDC
Re: [Repeater-Builder] Sinclair antennas suggestions
Contact Sinclair, Comprod, TX/RX Systems or Telewave directly. They all sell direct to hams, I believe. All can provide what you desire. All will be expensive. Chuck WB2EDV - Original Message - From: georgiaskywarn [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Sunday, August 17, 2008 7:43 AM Subject: [Repeater-Builder] Sinclair antennas suggestions What Sinclair antenna would be a match to the db420? Anyone know a ball park figure on pricing? Any dealer suggestions to deal with? The suggestion in earlier post mentioned that Sinclair might custom cut a vhf / uhf style antenna...something like what the db314 is. Curious also if anyone has had a Sinclair custom built before. Other dc grounded antenna suggestions are welcomed too. Thanks! Robert KD4YDC Yahoo! Groups Links
RE: [Repeater-Builder] Sinclair antennas suggestions
If you contact Comprod,we have done business with them and they gave us a price as radio-amateur. it depends on what antenna you need too. And they gave great support after we baught it! 73/s gervais ve2ckn
RE: [Repeater-Builder] Sinclair antennas suggestions
Robert, You can peruse the Sinclair catalog at www.sinctech.com It is a Canadian company, so shipping to Stateside addresses is one factor to consider. I bought two SRL-222 VHF dipole antennas for 2m use, several years ago, and they are both performing very well. Sinclair products are generally well-designed and well-made, but they are expensive. You can special-order almost any Sinclair product through commercial distributors such as Tessco, Talley, and Hutton. The only item I have ordered direct from Sinclair was a new cable harness for a Q-202G duplexer, to convert it from high-split to low-split, for operation in the 2m band. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of georgiaskywarn Sent: Sunday, August 17, 2008 4:43 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Sinclair antennas suggestions What Sinclair antenna would be a match to the db420? Anyone know a ball park figure on pricing? Any dealer suggestions to deal with? The suggestion in earlier post mentioned that Sinclair might custom cut a vhf / uhf style antenna...something like what the db314 is. Curious also if anyone has had a Sinclair custom built before. Other dc grounded antenna suggestions are welcomed too. Thanks! Robert KD4YDC
Re: [Repeater-Builder] Sinclair Antennas
Tnx Nate... If you can I'd shake the antenna while it is hot, while a weak signal is on the repeater input... that'll tell you real quick...as you probably know, dioding from anything loose really raises hell with repeaters... also dis-similar metals moving Just to clarify... yes it is the VHF 210-C4 variety, the new ones made within the past 5 yrs or so that I am talking about... we have also had some trouble with the SRL2330 VHF duplexers, while the specs say 600khz you really have to struggle to get em and keep em there with any decent (-80db or better/side for the 6 can variety) rejection at a decent insertion loss -1.5db. Notch (reject) caps go seen to go bad prematurely, especially if you screw on em a few too many times. The inside scoop suggests that those duplexers should not be used at that close a spacing... so we went out and spent some serious coin and are now replacing everything with new Daniels and Comprod equipment getting tired of running up and down the hill every other day fixing junk that's long outlived it's natural lifespan that old service monitor/spectrum analyser I have is getting heavier by the day. 73 Richard VA7AA - Original Message - From: Nate Duehr [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Wednesday, May 24, 2006 3:04 PM Subject: Re: [Repeater-Builder] Sinclair Antennas Richard wrote: snip Anyone have experiences over the past few years? Particularly the 4 bay open dipole collinear variety of which we almost exclusivly use. Richard VA7AA We have a VHF Sinclair that we're investigating, but I can't say that we have any hard evidence yet that we have a failure at the antenna. I'm more suspicious of other things right now, but we're seeing more reflected power back than we should from our new Sinclair on a VHF system. It was deployed 2 summers ago. Nate WY0X Yahoo! Groups Links -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.385 / Virus Database: 268.7.1/347 - Release Date: 5/24/2006 Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Sinclair Antennas
va7aa wrote: Tnx Nate... If you can I'd shake the antenna while it is hot, while a weak signal is on the repeater input... that'll tell you real quick...as you probably know, dioding from anything loose really raises hell with repeaters... also dis-similar metals moving We haven't heard anything that sounds like a shake it type failure. No crackles, etc. The antenna is side-mounted so it doesn't move a whole lot, but the site is very windy at times. Well over 50 MPH with gusts above that. The 6m antenna has a whip section on top, for example, and it was pushed over into the tower hard enough to get stuck there this winter. (Yeah, we're going to swap it for something a little more stout, probably. It's on the list of things to-do...) Just to clarify... yes it is the VHF 210-C4 variety, the new ones made within the past 5 yrs or so that I am talking about... Understand. I just figured I'd say hello and let you know we have something possibly wrong on one of our systems using a newer one, but nothing that points to the antenna yet. Just to keep in touch. I highly doubt our problem is the antenna, but guessing isn't knowing. we have also had some trouble with the SRL2330 VHF duplexers, while the specs say 600khz you really have to struggle to get em and keep em there with any decent (-80db or better/side for the 6 can variety) rejection at a decent insertion loss -1.5db. Notch (reject) caps go seen to go bad prematurely, especially if you screw on em a few too many times. The inside scoop suggests that those duplexers should not be used at that close a spacing... so we went out and spent some serious coin and are now replacing everything with new Daniels and Comprod equipment No newer (or older) Sinclair duplexers in service here that I remember. Can't comment on any of that. getting tired of running up and down the hill every other day fixing junk that's long outlived it's natural lifespan that old service monitor/spectrum analyser I have is getting heavier by the day. Heh... yep. One of our members did that big job a few years ago, swapping everything out for Mastr II stations... etc. Took a lot more time and effort than anyone but us techies gave him credit for, and we're all enjoying the benefits now -- everything's solid as a rock -- other than the ()*[EMAIL PROTECTED][EMAIL PROTECTED] Kendecomm 220 MHz repeater which was recently found to be 3.3 KHz off-frequency. (Which seems about right for the quality level of the components I found inside and their age.) Nate WY0X Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Sinclair Antennas
Has anyone lately been having quality issues with the Sinclair base station/coliinear antennas over the past 5 or 6 years? Ever since they abandoned their US mfg operations and moved their factory to Mexico... changed their model numbers (for supposedly the same product)(dumb move in my opinion)seems we have noticed some negative changes in general quality. Internal harnesses have become intermittant, swaged fittings come loose... all causing considerable IMD/desense and general grief for commercial and amateur operators alike. When you have repeater antennas on windblown icy mountaintops that are basically inaccessable for repairs for 6 months of the year, you cannot have this kind of thing happen... Anyone have experiences over the past few years? Particularly the 4 bay open dipole collinear variety of which we almost exclusivly use. Richard VA7AA Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Sinclair Antennas
Has anyone lately been having quality issues with the Sinclair base station/coliinear antennas over the past 5 or 6 years? Can't comment on the whitesticks, but the yagis have gone downhill. I had a couple of 900 MHz Sinclair yagis that were built like the proverbial brick outhouse. They discontinued the model I had been buying, but they had a replacement model which was slightly more expensive. I ordered one and was really disappointed. The old ones had heavy solid-rod elements (3/8 diameter I believe). The new one had smaller 1/4 diameter tubing elements which never would have held up to falling ice. The mounting hardware was cheesy compared to the old. Their dipole arrays still seem to be built the same. --- Jeff Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Sinclair Antennas
Richard wrote: snip Anyone have experiences over the past few years? Particularly the 4 bay open dipole collinear variety of which we almost exclusivly use. Richard VA7AA We have a VHF Sinclair that we're investigating, but I can't say that we have any hard evidence yet that we have a failure at the antenna. I'm more suspicious of other things right now, but we're seeing more reflected power back than we should from our new Sinclair on a VHF system. It was deployed 2 summers ago. Nate WY0X Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
