RE: [AMRadio] Ground(Or Lack Of)?
Hi Bob, A true Dipole is a balanced antenna that works in space or on earth. The proximity to earth or any reflective surface changes the balance and / or the radiation resistance. That's enough said on the ant working, but the reflectivity of the earth and the grounding system can greatly effect the radiation patterns and how much RF is floating around on the wiring and metal stuff in the housing community. This RFI can be a big problem on AM at 100 watts or more! I once, in a cramped location, had to operate an Eico 720 and home brewed modulator, with a RF hot D104. I could talk to people but when I touched the Microphone it was HOT and the modulator started squealing. Some modification of the MIC circuit and a shorter cord got rid of the squeals but the whole rig was hot with RF. This didn't go away until I changed the orientation of the dipole and did some ground wiring changes. 73 John, WA5BXO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bob Macklin Sent: Tuesday, February 15, 2005 5:05 PM To: GlowBugs; AM Radio Subject: [AMRadio] Ground(Or Lack Of)? Back to my 4th floor apartment problem. This building has plastic plumbing(which seems to leak at tleat once a month). This morning I pulled the plate off one of the wall plugs. The building has plastic conduit also. So the only ground is the third wire and who knows where or how it runs. The antenna will be made to a full 40M dipole. What kind of problems should I expect from the crappy ground? Bob Macklin K5MYJ/7 Seattle, Wa. "REAL RADIOS GLOW IN THE DARK" __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
Re: [AMRadio] Ground(Or Lack Of)?
Bob: Dont expect any problem with your dipole (unless you are right under it, then things might get hot). A dipole does not need any ground to operate. The "3rd wire" should only be used as a safety line to the radio chassis. It would be best if you checked the 3rd wire continuity all the way back to the building entrance ground but I realize this is probably impractical. Good Luck, DE Charlie, K0NG .. Quoting Bob Macklin <[EMAIL PROTECTED]>: > Back to my 4th floor apartment problem. This building has plastic > plumbing(which seems to leak at tleat once a month). This morning I pulled > the plate off one of the wall plugs. The building has plastic conduit also. > > So the only ground is the third wire and who knows where or how it runs. > > The antenna will be made to a full 40M dipole. What kind of problems should > I expect from the crappy ground? > > Bob Macklin > K5MYJ/7 > Seattle, Wa. > > "REAL RADIOS GLOW IN THE DARK" > __ > AMRadio mailing list > Home: http://mailman.qth.net/mailman/listinfo/amradio > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:AMRadio@mailman.qth.net >
Re: [AMRadio] Open Reel Tape -- Production resumes ?
>Some of us who cherish the sound (and look) of our >open reel machines are heartened by this news from one >of the sellers of open-reel tape. Indeed. >(you will recall late in 2004 Quategy, which descended >from Ampex, shut down its manufacturing plant. >Workers were given little notice, but news accounts at >the time cited declining markets for tape storage.) They lost a major contract and shut down to reorganize. I'm glad they are back. I wonder if they are going to make any tape with no back side stuff on it. That's where the tape problems start and end. It is interesting that Quantegy also had purchased the Scotch line, but you don't see any of THAT tape in production I have some boxes of "NEW" Ampex that's their equivalent of Scotch 111. I have some NOS boxes of Scotch 203, my favorite of the time. A lot of Revox recorders bias PERFECTLY for this tape. Powell -- !
Re: [AMRadio] Ground(Or Lack Of)?
In a message dated 2/15/05 3:06:15 PM, [EMAIL PROTECTED] writes: > Back to my 4th floor apartment problem. This building has plastic > plumbing(which seems to leak at tleat once a month). This morning I pulled > the plate off one of the wall plugs. The building has plastic conduit also. > > So the only ground is the third wire and who knows where or how it runs. > > The antenna will be made to a full 40M dipole. What kind of problems should > I expect from the crappy ground? > > Bob, Entirely possible. I operated very successfully out of a 5th floor room in Germany back in the 1970s using a 400 ft end fed long wire. That high up (4th floor) your RF ground situation would be problematical regardless of the type of plumbing and/or electrical conduit used. Using a balanced antenna like you are, you shouldn't have "RF in the shack" problems but if you do, hang a quarter wave wire out the window connected to your xmitter chassis. You may need one of these "stubs" for each band you work. Your biggest problem, though, will be staying legal in regard to lightening protection. Local codes would likely require installation a solid grounding system for your antenna which you would have to clear with your landlord (and pay for yourself).If you want to bootleg it (which countless hams including myself have done) I would recommend making provision for disconnecting the antenna lead-in and getting it entirely outside the building when an electrical storm threatened. Dennis D. W7QHO Glendale, CA
[AMRadio] Ground(Or Lack Of)?
Back to my 4th floor apartment problem. This building has plastic plumbing(which seems to leak at tleat once a month). This morning I pulled the plate off one of the wall plugs. The building has plastic conduit also. So the only ground is the third wire and who knows where or how it runs. The antenna will be made to a full 40M dipole. What kind of problems should I expect from the crappy ground? Bob Macklin K5MYJ/7 Seattle, Wa. "REAL RADIOS GLOW IN THE DARK"
Re: [AMRadio] Meter Switch Part #
Ron: I think I have an original switch for the Viking II. Email me direct. Regards, Gary...WZ1M - Original Message - From: <[EMAIL PROTECTED]> To: Sent: Tuesday, February 15, 2005 1:31 PM Subject: [AMRadio] Meter Switch Part # > Does anyone know the Centralab part number for the Meter switch in the > Johnson viking 2?..Tnx es 73's..Ron W6MAU > __ > AMRadio mailing list > Home: http://mailman.qth.net/mailman/listinfo/amradio > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:AMRadio@mailman.qth.net >
RE: [AMRadio] Open Reel Tape -- Production resumes ?
Actually, the modern digital recorders that I have used simulate a tape transport. The push-button controls are marked the same as a tape deck. When you hit fast-forward, it simulates building up speed--just like a tape machine. People still say "roll tape" to start recording --even when they know it's not tape. 73, Don M. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of peter markavage Sent: Tuesday, February 15, 2005 1:17 PM To: amradio@mailman.qth.net Cc: [EMAIL PROTECTED] Subject: Re: [AMRadio] Open Reel Tape -- Production resumes ? That's true Don, but Paul likes to say on the air "roll some tape". It doesn't have the same ring if you say "roll some bytes" or "move some bytes". Pete, wa2cwa On Tue, 15 Feb 2005 13:00:50 -0500 "Merz Donald S" <[EMAIL PROTECTED]> writes: > Well, you can't beat the look of an open reel tape machine. The > sound? --that's another matter entirely. The recording industry has > certainly gone digital. The used-audio places are full of the best > name brand tape machines and they can all be had for a song. The > analog mixer is beginning to suffer a similar fate. Outboard > hardware is also going soft. The compressor and effects hardware > makers have had to release "plug-in" software versions of all of > their products in order to protect their name in the marketplace. > > Audio production is going the way of the analog radio. In the not > too distant future, it will all be software and "control surfaces". > > 73, Don Merz, N3RHT > > > > > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of VJB > Sent: Tuesday, February 15, 2005 12:41 PM > To: [EMAIL PROTECTED] > Subject: [AMRadio] Open Reel Tape -- Production resumes ? > > > Some of us who cherish the sound (and look) of our > open reel machines are heartened by this news from one > of the sellers of open-reel tape. > > (you will recall late in 2004 Quategy, which descended > from Ampex, shut down its manufacturing plant. > Workers were given little notice, but news accounts at > the time cited declining markets for tape storage.) > > -- > http://www.usrecordingmedia.com/qu456grma.html > > UPDATE Feb 14, 2005: The tape is rolling in and we're > painfully and > slowly starting to fill our shelves. (We even have > 1/4" GP9 and 457 on > reels now.) Quantegy has re-instated full audio > production again. > Also, there definitely will be new studio quality open > reel audio tape > made here in Pennsylvania with the first tape being > available probably > in late May 2005 if not sooner. As soon as we have > this tape available > to you, it'll be posted on this web site. They're > going to be making > very good tape for almost everyone in the studio > through broadcast, > government, and even the home recordist. We feel > everything from the > new tape boxes through the sound and slitting of the > tape is going to > have a "classic" touch to it. __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net The information contained in this e-mail may be confidential and is intended solely for the use of the named addressee. Access, copying or re-use of the e-mail or any information contained therein by any other person is not authorized. If you are not the intended recipient please notify us immediately by returning the e-mail to the originator.(A)
[AMRadio] Meter Switch Part #
Does anyone know the Centralab part number for the Meter switch in the Johnson viking 2?..Tnx es 73's..Ron W6MAU
Re: [AMRadio] Open Reel Tape -- Production resumes ?
That's true Don, but Paul likes to say on the air "roll some tape". It doesn't have the same ring if you say "roll some bytes" or "move some bytes". Pete, wa2cwa On Tue, 15 Feb 2005 13:00:50 -0500 "Merz Donald S" <[EMAIL PROTECTED]> writes: > Well, you can't beat the look of an open reel tape machine. The > sound? --that's another matter entirely. The recording industry has > certainly gone digital. The used-audio places are full of the best > name brand tape machines and they can all be had for a song. The > analog mixer is beginning to suffer a similar fate. Outboard > hardware is also going soft. The compressor and effects hardware > makers have had to release "plug-in" software versions of all of > their products in order to protect their name in the marketplace. > > Audio production is going the way of the analog radio. In the not > too distant future, it will all be software and "control surfaces". > > 73, Don Merz, N3RHT > > > > > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of VJB > Sent: Tuesday, February 15, 2005 12:41 PM > To: [EMAIL PROTECTED] > Subject: [AMRadio] Open Reel Tape -- Production resumes ? > > > Some of us who cherish the sound (and look) of our > open reel machines are heartened by this news from one > of the sellers of open-reel tape. > > (you will recall late in 2004 Quategy, which descended > from Ampex, shut down its manufacturing plant. > Workers were given little notice, but news accounts at > the time cited declining markets for tape storage.) > > -- > http://www.usrecordingmedia.com/qu456grma.html > > UPDATE Feb 14, 2005: The tape is rolling in and we're > painfully and > slowly starting to fill our shelves. (We even have > 1/4" GP9 and 457 on > reels now.) Quantegy has re-instated full audio > production again. > Also, there definitely will be new studio quality open > reel audio tape > made here in Pennsylvania with the first tape being > available probably > in late May 2005 if not sooner. As soon as we have > this tape available > to you, it'll be posted on this web site. They're > going to be making > very good tape for almost everyone in the studio > through broadcast, > government, and even the home recordist. We feel > everything from the > new tape boxes through the sound and slitting of the > tape is going to > have a "classic" touch to it.
RE: [AMRadio] Open Reel Tape -- Production resumes ?
Well, you can't beat the look of an open reel tape machine. The sound? --that's another matter entirely. The recording industry has certainly gone digital. The used-audio places are full of the best name brand tape machines and they can all be had for a song. The analog mixer is beginning to suffer a similar fate. Outboard hardware is also going soft. The compressor and effects hardware makers have had to release "plug-in" software versions of all of their products in order to protect their name in the marketplace. Audio production is going the way of the analog radio. In the not too distant future, it will all be software and "control surfaces". 73, Don Merz, N3RHT -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of VJB Sent: Tuesday, February 15, 2005 12:41 PM To: [EMAIL PROTECTED] Subject: [AMRadio] Open Reel Tape -- Production resumes ? Some of us who cherish the sound (and look) of our open reel machines are heartened by this news from one of the sellers of open-reel tape. (you will recall late in 2004 Quategy, which descended from Ampex, shut down its manufacturing plant. Workers were given little notice, but news accounts at the time cited declining markets for tape storage.) -- http://www.usrecordingmedia.com/qu456grma.html UPDATE Feb 14, 2005: The tape is rolling in and we're painfully and slowly starting to fill our shelves. (We even have 1/4" GP9 and 457 on reels now.) Quantegy has re-instated full audio production again. Also, there definitely will be new studio quality open reel audio tape made here in Pennsylvania with the first tape being available probably in late May 2005 if not sooner. As soon as we have this tape available to you, it'll be posted on this web site. They're going to be making very good tape for almost everyone in the studio through broadcast, government, and even the home recordist. We feel everything from the new tape boxes through the sound and slitting of the tape is going to have a "classic" touch to it. __ Do you Yahoo!? Yahoo! Mail - You care about security. So do we. http://promotions.yahoo.com/new_mail __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net The information contained in this e-mail may be confidential and is intended solely for the use of the named addressee. Access, copying or re-use of the e-mail or any information contained therein by any other person is not authorized. If you are not the intended recipient please notify us immediately by returning the e-mail to the originator.(A)
[AMRadio] Open Reel Tape -- Production resumes ?
Some of us who cherish the sound (and look) of our open reel machines are heartened by this news from one of the sellers of open-reel tape. (you will recall late in 2004 Quategy, which descended from Ampex, shut down its manufacturing plant. Workers were given little notice, but news accounts at the time cited declining markets for tape storage.) -- http://www.usrecordingmedia.com/qu456grma.html UPDATE Feb 14, 2005: The tape is rolling in and we're painfully and slowly starting to fill our shelves. (We even have 1/4" GP9 and 457 on reels now.) Quantegy has re-instated full audio production again. Also, there definitely will be new studio quality open reel audio tape made here in Pennsylvania with the first tape being available probably in late May 2005 if not sooner. As soon as we have this tape available to you, it'll be posted on this web site. They're going to be making very good tape for almost everyone in the studio through broadcast, government, and even the home recordist. We feel everything from the new tape boxes through the sound and slitting of the tape is going to have a "classic" touch to it. __ Do you Yahoo!? Yahoo! Mail - You care about security. So do we. http://promotions.yahoo.com/new_mail
