Re: [Repeater-Builder] Did measurement of inductors change???
Millihenery Microhenery is the terms used depending on the application of a particular circuit. What I have not seen for a long time is the old J.W. Miller coil winding device. maybe at a Antique radio swap maybe. Mark Holman AB8RU *** IT Student * Happy Holidays - Original Message - From: Wade Lake [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Thursday, December 23, 2004 7:47 PM Subject: Fw: [Repeater-Builder] Did measurement of inductors change??? Sorry, their search engine does not allow that without a previous browser session. Just go to http://www.digikey.com and enter 2.2mH choke in the search window. Select fixed(7 items). there are a few to pick from. Wade - KR7K - Original Message - From: Wade Lake [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Thursday, December 23, 2004 5:38 PM Subject: Re: [Repeater-Builder] Did measurement of inductors change??? John, I did a quick search and found those at Digikey, follow this link. http://www.digikey.com/scripts/DkSearch/dksus.dll?Filter Wade - KR7K - Original Message - From: JOHN MACKEY [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Thursday, December 23, 2004 10:07 AM Subject: Re: [Repeater-Builder] Did measurement of inductors change??? Yea, the difference between uH (Micro-henries) mH (mil-henries) is what I've always understood since my earliest training. But the fact that I have been unable to fine mH chokes only found uH chokes made me wonder if the measurement system of inductors had changed!! (sort of like when capacitor measurements changed from uuF to pF) I was doing this search late last night. Today, a little more fresh, I'll go back to work look at the Newark Allied catalogs again! Perhaps I'll see something I missed. -- Original Message -- Received: Wed, 22 Dec 2004 09:35:50 PM CST From: Joe Montierth [EMAIL PROTECTED] --- JOHN MACKEY [EMAIL PROTECTED] wrote: I need to build a filter and it requires I have a few chokes of 2.2 mH value. So I look in the Newark Allied catalogs and all the chokes I am seeing are labeled µH (a u with a tail on the left) rather than mH Was I asleep for a long period of time they changed how inductors/chokes are labeled or am I missing something else? The m is for milli, the u (with the tail) is for micro. They are both valid, RF frequencies usually use microhenries(u) and audio range will use millihenries (m). If you order the wrong one you'll only be off by a factor of 1000! 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] Did measurement of inductors change???
John, I did a quick search and found those at Digikey, follow this link. http://www.digikey.com/scripts/DkSearch/dksus.dll?Filter Wade - KR7K - Original Message - From: JOHN MACKEY [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Thursday, December 23, 2004 10:07 AM Subject: Re: [Repeater-Builder] Did measurement of inductors change??? Yea, the difference between uH (Micro-henries) mH (mil-henries) is what I've always understood since my earliest training. But the fact that I have been unable to fine mH chokes only found uH chokes made me wonder if the measurement system of inductors had changed!! (sort of like when capacitor measurements changed from uuF to pF) I was doing this search late last night. Today, a little more fresh, I'll go back to work look at the Newark Allied catalogs again! Perhaps I'll see something I missed. -- Original Message -- Received: Wed, 22 Dec 2004 09:35:50 PM CST From: Joe Montierth [EMAIL PROTECTED] --- JOHN MACKEY [EMAIL PROTECTED] wrote: I need to build a filter and it requires I have a few chokes of 2.2 mH value. So I look in the Newark Allied catalogs and all the chokes I am seeing are labeled µH (a u with a tail on the left) rather than mH Was I asleep for a long period of time they changed how inductors/chokes are labeled or am I missing something else? The m is for milli, the u (with the tail) is for micro. They are both valid, RF frequencies usually use microhenries(u) and audio range will use millihenries (m). If you order the wrong one you'll only be off by a factor of 1000! 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] Did measurement of inductors change???
OK, a night's rest a fresh view can do wonders!! Looking at the Allied catalog, I see that they list ALL chokes in uH (micro-henries). As previously stated, I need a 2.2 mH choke. Looking near the end of thier list, I found a listing for 2.2K!! I guess I thought it would say 2200 uH or 2.2 mH I wasn't paying close enough attention to realize how they were using that K. I'm embarrased. thanks to everyone! -- Original Message -- Received: Thu, 23 Dec 2004 07:32:10 AM CST From: Ricardo Trujillo [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Did measurement of inductors change??? John, Those chokes are a lot smaller than what you need, they are specified in microhenrys, the mh you need is millihenrys. Ricardo W3/HK4BHA -Original Message- From: JOHN MACKEY [mailto:[EMAIL PROTECTED] Sent: Wednesday, December 22, 2004 9:40 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Did measurement of inductors change??? I need to build a filter and it requires I have a few chokes of 2.2 mH value. So I look in the Newark Allied catalogs and all the chokes I am seeing are labeled µH (a u with a tail on the left) rather than mH Was I asleep for a long period of time they changed how inductors/chokes are labeled or am I missing something else? 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] Did measurement of inductors change???
--- Neil McKie [EMAIL PROTECTED] wrote: JOHN MACKEY wrote: ... snip ... sort of like when capacitor measurements changed from uuF to pF) 35-40 years ago? I was doing this search late last night. Today, a little more fresh, I'll go back to work look at the Newark Allied catalogs again! Perhaps I'll see something I missed. If you continue to have problems there, I can look for you here. BTW, I have the current copy of EEM here. Neil DigiKey has two different 2.2mH inductors listed. www.digikey.com Joe __ Do you Yahoo!? Dress up your holiday email, Hollywood style. Learn more. http://celebrity.mail.yahoo.com 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] Did measurement of inductors change???
John, Check with Skycraft Surplus in Orlando Fla or Electro Sonic in Toronto they should have them 73 John VE3AMZ - Original Message - From: JOHN MACKEY [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Wednesday, December 22, 2004 9:39 PM Subject: [Repeater-Builder] Did measurement of inductors change??? I need to build a filter and it requires I have a few chokes of 2.2 mH value. So I look in the Newark Allied catalogs and all the chokes I am seeing are labeled µH (a u with a tail on the left) rather than mH Was I asleep for a long period of time they changed how inductors/chokes are labeled or am I missing something else? 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] Did measurement of inductors change???
--- JOHN MACKEY [EMAIL PROTECTED] wrote: I need to build a filter and it requires I have a few chokes of 2.2 mH value. So I look in the Newark Allied catalogs and all the chokes I am seeing are labeled µH (a u with a tail on the left) rather than mH Was I asleep for a long period of time they changed how inductors/chokes are labeled or am I missing something else? The m is for milli, the u (with the tail) is for micro. They are both valid, RF frequencies usually use microhenries(u) and audio range will use millihenries (m). If you order the wrong one you'll only be off by a factor of 1000! Joe __ Do you Yahoo!? Yahoo! Mail - now with 250MB free storage. Learn more. http://info.mail.yahoo.com/mail_250 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] Did measurement of inductors change???
--- JOHN MACKEY [EMAIL PROTECTED] wrote: Right, what you posted is what I had always known. But now that I am looking in order books for Newark Allied, I can't even find anything listed for millihenries, only microhenries!!! For the Newark online catalog use 2200 u henries or 2200 microhenries. That is the same as 2.2 milihenries. __ Do you Yahoo!? The all-new My Yahoo! - What will yours do? http://my.yahoo.com 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] Did measurement of inductors change???
John, Those chokes are a lot smaller than what you need, they are specified in microhenrys, the mh you need is millihenrys. Ricardo W3/HK4BHA -Original Message- From: JOHN MACKEY [mailto:[EMAIL PROTECTED] Sent: Wednesday, December 22, 2004 9:40 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Did measurement of inductors change??? I need to build a filter and it requires I have a few chokes of 2.2 mH value. So I look in the Newark Allied catalogs and all the chokes I am seeing are labeled µH (a u with a tail on the left) rather than mH Was I asleep for a long period of time they changed how inductors/chokes are labeled or am I missing something else? 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] Did measurement of inductors change???
micro-henry's.. mike -Original Message- From: JOHN MACKEY [mailto:[EMAIL PROTECTED] Sent: Wednesday, December 22, 2004 9:40 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Did measurement of inductors change??? I need to build a filter and it requires I have a few chokes of 2.2 mH value. So I look in the Newark Allied catalogs and all the chokes I am seeing are labeled µH (a u with a tail on the left) rather than mH Was I asleep for a long period of time they changed how inductors/chokes are labeled or am I missing something else? 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] Did measurement of inductors change???
Yea, the difference between uH (Micro-henries) mH (mil-henries) is what I've always understood since my earliest training. But the fact that I have been unable to fine mH chokes only found uH chokes made me wonder if the measurement system of inductors had changed!! (sort of like when capacitor measurements changed from uuF to pF) I was doing this search late last night. Today, a little more fresh, I'll go back to work look at the Newark Allied catalogs again! Perhaps I'll see something I missed. -- Original Message -- Received: Wed, 22 Dec 2004 09:35:50 PM CST From: Joe Montierth [EMAIL PROTECTED] --- JOHN MACKEY [EMAIL PROTECTED] wrote: I need to build a filter and it requires I have a few chokes of 2.2 mH value. So I look in the Newark Allied catalogs and all the chokes I am seeing are labeled µH (a u with a tail on the left) rather than mH Was I asleep for a long period of time they changed how inductors/chokes are labeled or am I missing something else? The m is for milli, the u (with the tail) is for micro. They are both valid, RF frequencies usually use microhenries(u) and audio range will use millihenries (m). If you order the wrong one you'll only be off by a factor of 1000! 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] Did measurement of inductors change???
JOHN MACKEY wrote: ... snip ... sort of like when capacitor measurements changed from uuF to pF) 35-40 years ago? I was doing this search late last night. Today, a little more fresh, I'll go back to work look at the Newark Allied catalogs again! Perhaps I'll see something I missed. If you continue to have problems there, I can look for you here. BTW, I have the current copy of EEM here. Neil 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] Did measurement of inductors change???
Right, what you posted is what I had always known. But now that I am looking in order books for Newark Allied, I can't even find anything listed for millihenries, only microhenries!!! -- Original Message -- Received: Wed, 22 Dec 2004 09:35:50 PM CST From: Joe Montierth [EMAIL PROTECTED] The m is for milli, the u (with the tail) is for micro. They are both valid, RF frequencies usually use microhenries(u) and audio range will use millihenries (m). If you order the wrong one you'll only be off by a factor of 1000! 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/
