Re: [Repeater-Builder] 4 Bay antenna
If you make a harness for that antenna use RG-59 or RG-11 - 75 ohm Cable to get match , don't use RG-58 or RG-8 it won't work , and it doesn't have to be Cushcraft can be other brands many manufactures made them I have one made by Hy Gain it also has n connectors. Worked better than a lot of those fiberglass pieces of junk never put one of them up that lasted over a year . I took A 4 bay down that had been up over 20 years and it did a better job than the one we replaced it with . RG-59 will handle 100 watts but loss is grater than RG-11 . Oldmax Dale N8SAC - Original Message - From: Chuck Kelsey [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Sunday, March 12, 2006 5:09 PM Subject: Re: [Repeater-Builder] 4 Bay antenna You have a Cushcraft 4-pole. This is not a particularly good antenna. Yes you can use Tee connectors. Don't place this antenna in service on anything that is critical, would be my suggestion. Chuck WB2EDV [EMAIL PROTECTED] wrote: I have a 4 bay vhf antenna, with each antenna straight and not folded. The harness is old and cracked. Some one has used electrical tape on some of the harness. There is no label or markings anyplace to know what brand it might be. If I made a new harness, can I use T connectors? Each antenna has a gama match for tuning. and using mobile size coax; no markings on the coax either. Rod KC7VQR Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] 4 Bay antenna
At 3/13/2006 19:26, you wrote: If you make a harness for that antenna use RG-59 or RG-11 - 75 ohm Cable to get match , don't use RG-58 or RG-8 it won't work Why not? 2 50 ohm terminations (dipoles) T'd together make 25 ohms. Run two 1/4 wave multiples (3/4, 1 1/4, etc.) from each T to get 100 ohms each to a 3rd T, which then gives you 50 ohms for the feedpoint. The reason it's important to use 50 ohm coax is because you can use a silver-plated coax for the harness (I don't know of any 75 ohm coax that has a silver-plated braid; it probably exists but is not commonplace). RG-59 RG-11 do not have a silver-plated braid will eventually generate desense when used in duplex service. Bob NO6B 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] 4 Bay antenna
Sounds like an old Cushcraft AFM-4DA array. Bad news. --- Jeff -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Sunday, March 12, 2006 3:10 PM To: [EMAIL PROTECTED]; repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] 4 Bay antenna I have a 4 bay vhf antenna, with each antenna straight and not folded. The harness is old and cracked. Some one has used electrical tape on some of the harness. There is no label or markings anyplace to know what brand it might be. If I made a new harness, can I use T connectors? Each antenna has a gama match for tuning. and using mobile size coax; no markings on the coax either. Rod KC7VQR Yahoo! Groups Links -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.375 / Virus Database: 268.2.1/279 - Release Date: 3/10/2006 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.375 / Virus Database: 268.2.1/279 - Release Date: 3/10/2006 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] 4 Bay antenna
You have a Cushcraft 4-pole. This is not a particularly good antenna. Yes you can use Tee connectors. Don't place this antenna in service on anything that is critical, would be my suggestion. Chuck WB2EDV [EMAIL PROTECTED] wrote: I have a 4 bay vhf antenna, with each antenna straight and not folded. The harness is old and cracked. Some one has used electrical tape on some of the harness. There is no label or markings anyplace to know what brand it might be. If I made a new harness, can I use T connectors? Each antenna has a gama match for tuning. and using mobile size coax; no markings on the coax either. Rod KC7VQR Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] 4 Bay antenna
take a wander over to Cushcraft to see if the manual can be downloaded. m [EMAIL PROTECTED] wrote: I have a 4 bay vhf antenna, with each antenna straight and not folded. The harness is old and cracked. Some one has used electrical tape on some of the harness. There is no label or markings anyplace to know what brand it might be. If I made a new harness, can I use T connectors? Each antenna has a gama match for tuning. and using mobile size coax; no markings on the coax either. Rod KC7VQR Yahoo! Groups Links -- MZ� 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/ begin:vcard fn:Mark A. Holman n:Holman;Mark A. email;internet:[EMAIL PROTECTED] title:Webmaster, IT Student note;quoted-printable:IT, Student Member IEEE, Life Member ARRL, Assoc. Member SBE, CRO, ARRL= VE=0D=0A= Welcome to the Snowy stuff of Michigan=0D=0A= x-mozilla-html:TRUE url:http://www.ab8ru.org version:2.1 end:vcard
