[AMRadio] looking for HRO tuning knob
Group, I have a real stickler here. On the bench is an HRO senior in need of restoration. It is all there but everything needs to at least cleaned and I'm sure every paper cap needs to be replaced. The problem is that the main tuning knob cannot be removed. It is firmly stuck to the shaft. It looks like an ugly and destructive dissection of the tuning knob is in order. So if you have a black HRO tuning knob surplus to your needs, drop me a line with how much you want for it. TNX de KA4JVY Mark __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
RE: [AMRadio] Tower Construction
I had lightning rods installed on my house, and has been a very good investment. Guy from Indiana comes down here in winter/early spring and installs them here in southern TN. Joe W4AAB - Original Message - From: "david knepper" <[EMAIL PROTECTED]> To: "Gary Schafer" <[EMAIL PROTECTED]>; "'Stevan A. White'" <[EMAIL PROTECTED]>; "'Discussion of AM Radio'" ; <[EMAIL PROTECTED]> Sent: Tuesday, June 13, 2006 6:33 AM Subject: Re: [Boatanchors] RE: [AMRadio] Tower Construction > I appreciate all the email on this subject. > > Interestingly, when lightning rods were placed on barns all over this > country, I cannot recall any barn in our region ever catching on fire > because of a lightning strike. I am sure that it did happen in other > regions, particularly, in the Midwest/ The installation was to run a very > large conductor cable from the lightning rod to the ground. There were > generally two rods on either end of the roof. I would theorize that a > lightning strike should be directed to a ground rod placed a few feet from > the tower rather than to travel under the base of the tower as some have > suggested. I am going to ground the tower at the three legs with a copper > strap and then to a ground rod about 3 feet from the tower. > > Also, the Empire State Building and other skyscrapers get struck many times > during a thunder storm and I wonder if anyone knows if the lightning travels > through the superstructure or through cables/straps to the base of the > building and through ground rods. > > Thanks > > Dave, W3ST > Publisher of the Collins Journal > Secretary to the Collins Radio Association > www.collinsra.com - the CRA Website > Now with PayPal > CRA Nets: 3805 Khz every Monday at 8 PM EST > and 14255 every Saturday at 12 Noon EST > - Original Message - > From: "Gary Schafer" <[EMAIL PROTECTED]> > To: "'Stevan A. White'" <[EMAIL PROTECTED]>; "'Discussion of AM Radio'" > ; <[EMAIL PROTECTED]> > Sent: Monday, June 12, 2006 10:10 PM > Subject: [Boatanchors] RE: [AMRadio] Tower Construction > > > > Be careful when giving this advice. > > A UFER ground is a good SUPLEMENTAL ground in a tower base but it should > > not > > be the only ground. A large area like a floor of a building provides more > > surface for the lightning to dissipate. A tower concrete foundation may > > not > > be large enough by itself and there is the possibility of poor connections > > inside so that the concrete crack from a lightning strike if it is the > > only > > ground connection. It is always recommended that ground rods be attached > > to > > each tower leg in addition. > > > > 73 > > Gary K4FMX > > > > > > > >> > >> DO RUN THE GROUND THROUGH THE CONCRETE! Take a look at the information > >> on > >> this site first though. You may be glad you did. > >> > >> http://www.scott-inc.com/html/ufer.htm > >> > >> Best Regards, > >> Steve White, W5SAW > >> SW Commercial Electronics > >> > >> > >> -Original Message- > >> From: Ed Swynar [mailto:[EMAIL PROTECTED] > >> Sent: Saturday, June 10, 2006 2:16 PM > >> To: Discussion of AM Radio; [EMAIL PROTECTED] > >> Subject: Re: [AMRadio] Tower Construction > >> > >> > >> Hi Dave, > >> > >> I have a 48' tall, tapered, self-supporting "Delhi"-brand tower --- 6 > >> sections at 8' long each. > >> > >> The prescribed / manufacturer's recommendation is to bolt a 3' straight > >> formed extention at the base of each leg (total of 3), & to "suspend" > >> these > >> (a temporary wooden "cradle" will do admirably, as the cement sets) in a > >> hole dug 4' square, & 4-1/2' deep --- the cement is to come but a few > >> inches > >> below the bottom legs of the actual tower section. > >> > >> Oh yes --- the bottom 1' of the square hole is to be "belled" outward a > >> foot, or so. > >> > >> The documentation says this is good for heights of up to 64', or > >> so...I've > >> never gone beyond 48', & have never, EVER had an ounce of trouble in the > >> two > >> locations that I've had my tower up. > >> > >> BTW, the top of the tower as an old Cornell-Dubelier AR-44 rotator, & a > >> 3-element Hy-Gain TH3 MkIII triband yagi... > >> > >> Use "industrial"-grade coarse cement, & do NOT run any ground leads > >> through > >> the block itself! > >> > >> ~73~ Eddy VE3CUI - VE3XZ > > > > > > ___ > > Boatanchors mailing list > > [EMAIL PROTECTED] > > http://mailman.qth.net/mailman/listinfo/boatanchors > > ** List Administrator - Duane Fischer, W8DBF/W9WZE ** > > ** For Assistance: [EMAIL PROTECTED] ** > > $$ For vintage radio info, see the HCI web site $$ > > http://www.w9wze.org > > > > __ > AMRadio mailing list > Home: http://mailman.qth.net/mailman/listinfo/amradio > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:AMRadio@mailman.qth.net > AMfone Website: http://www.amfone.net > AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb >
RE: [AMRadio] Replies, duplicates, and so on
> > While I like the list in its current configuration, I do see how it > could be annoying to get duplicates sent to both the list and the > original poster(s). Having just done this to Gary and Geoff, from now > on I'll try to remedy this and send only to the list. Old habits die > hard. Sorry Geoff/Gary. > > ~ Todd, KA1KAQ While it is true that a reply will also go to the sender as well as the list I don't consider it to be a big problem. Sometimes it is an advantage as it may take hours for a reply to get through the list (at times). It is easy to delete the extra reply that comes in unless you happen to be one who is posting constantly then you get lots of duplicates. :>) 73 Gary K4FMX
RE: [Boatanchors] RE: [AMRadio] Tower Construction
Dave, You need more than one ground rod for a lightning ground unless you are going to completely disconnect everything from the shack. 73 Gary K4FMX > > I appreciate all the email on this subject. > > Interestingly, when lightning rods were placed on barns all over this > country, I cannot recall any barn in our region ever catching on fire > because of a lightning strike. I am sure that it did happen in other > regions, particularly, in the Midwest/ The installation was to run a > very > large conductor cable from the lightning rod to the ground. There were > generally two rods on either end of the roof. I would theorize that a > lightning strike should be directed to a ground rod placed a few feet from > the tower rather than to travel under the base of the tower as some have > suggested. I am going to ground the tower at the three legs with a copper > strap and then to a ground rod about 3 feet from the tower. > > Also, the Empire State Building and other skyscrapers get struck many > times > during a thunder storm and I wonder if anyone knows if the lightning > travels > through the superstructure or through cables/straps to the base of the > building and through ground rods. > > Thanks > > Dave, W3ST > Publisher of the Collins Journal > Secretary to the Collins Radio Association > www.collinsra.com - the CRA Website > Now with PayPal > CRA Nets: 3805 Khz every Monday at 8 PM EST > and 14255 every Saturday at 12 Noon EST > - Original Message - > From: "Gary Schafer" <[EMAIL PROTECTED]> > To: "'Stevan A. White'" <[EMAIL PROTECTED]>; "'Discussion of AM Radio'" > ; <[EMAIL PROTECTED]> > Sent: Monday, June 12, 2006 10:10 PM > Subject: [Boatanchors] RE: [AMRadio] Tower Construction > > > > Be careful when giving this advice. > > A UFER ground is a good SUPLEMENTAL ground in a tower base but it should > > not > > be the only ground. A large area like a floor of a building provides > more > > surface for the lightning to dissipate. A tower concrete foundation may > > not > > be large enough by itself and there is the possibility of poor > connections > > inside so that the concrete crack from a lightning strike if it is the > > only > > ground connection. It is always recommended that ground rods be attached > > to > > each tower leg in addition. > > > > 73 > > Gary K4FMX > >
Re: [AMRadio] RE: REPLY and REPLY-ALL The Same?
> When the list is set up the old way, hitting either REPLY or > REPLY-ALL in MS-Outlook does exactly the same thing--it replies only to > the list. The only way to reply to the individual is to go back into the > original e-mail, copy the individual's e-mail address out of it, go back > to your reply and paste the individual's e-mail address over top of the > list name--not too convenient. Or get a better (uncrippled) e-mail program.
RE: [AMRadio] Re: upside down reply buttons, sending to whom, and tops VS bottoms and other non AM tech stuff
Geoff Thanks for your concern but I did send the message to both you and the list and it did come back to me from the list. Thanks anyway because as you know I am just as likely to send it to my Grandmother, rest her sole. John
[AMRadio] Replies, duplicates, and so on
While I like the list in its current configuration, I do see how it could be annoying to get duplicates sent to both the list and the original poster(s). Having just done this to Gary and Geoff, from now on I'll try to remedy this and send only to the list. Old habits die hard. Sorry Geoff/Gary. In other news, the 'Kitchen Kilowatt' station in Studio K was taken down Sunday night in anticipation of a visit from the Realtor yesterday. All went well (the realtor totally ignored the 1400 lb broadcast transmitter in the living room), so I hope to get back on the air later tonight after a bit of shuffling. Summer noise was becoming more of an issue in recent days, maybe tonight will be better. ~ Todd, KA1KAQ
Re: [AMRadio] RE: REPLY and REPLY-ALL The Same?
EXACTLY! When the list is set up the old way, hitting either REPLY or REPLY-ALL in MS-Outlook does exactly the same thing--it replies only to the list. This is true. For whatever reason when the software is set to reply_to_list it will not include the original poster's address. Since we are running on qth.net's server, I have limited control over how some of this works. I had talked about getting our list on our own server late last year and things didn't work out at the the last minute, but I'm still planning to do it one way or the other, soon I hope. Brian/w5ami
[AMRadio] RE: REPLY and REPLY-ALL The Same?
Gary said: "The problem is, it does not work that way! The way it was set up before, hitting "reply" or "reply to all" did exactly the same thing! They would both reply ONLY to the list. Neither would list the sender if you wanted to reply only to him." EXACTLY! When the list is set up the old way, hitting either REPLY or REPLY-ALL in MS-Outlook does exactly the same thing--it replies only to the list. The only way to reply to the individual is to go back into the original e-mail, copy the individual's e-mail address out of it, go back to your reply and paste the individual's e-mail address over top of the list name--not too convenient. This is the crux of the problem. 73, Don Merz, N3RHT 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.(17b)
Re: [AMRadio] Re: upside down reply buttons, sending to whom, and tops VS bottoms and other non AM tech stuff
Interestinghitting 'reply' now sends only to the original sender, not to the list. Before it sent only to the list and 'reply all' sent to the list *and* the original poster. I'd have to disagree with Geoff about the list suffering if set up like this, *only* because this is such a great (and very 'vocal' group, through voice or text). I don't disagree with the premise that private postings can hurt a list, I just don't think most folks here aren't like that. From what I've seen, the list has suffered more through folks using the normal or usual approach of hitting 'reply' to for sale ads, or even to make a quick personal remark to a friend. A lot of this gets cycled back to the list and causes some frustration for Brian and probably most others. If someone is truly concerned with not posting to the list, they could still do so with the list set up as it was by deleting the list address. But the opposite seemed to be true (IMO), with more private/non-related replies being posted to the list and folks trying to remind everyone not to do this. My reasons for replying to the list with a response are partly selfish too: having been less active over the past decade, I feel better knowing that if my assumption or advice is wrong, those who are more qualified will correct it. This helps not only the original recipient, but also re-educates me at the same time. Such a deal! ~ Todd, KA1KAQ
Re: [AMRadio] How the reply button works
I prefer to have the default setting be to reply to the mailing list. I can usually handle manually changing it as needed. Steve WD8DAS
Re: [Boatanchors] RE: [AMRadio] Tower Construction
I appreciate all the email on this subject. Interestingly, when lightning rods were placed on barns all over this country, I cannot recall any barn in our region ever catching on fire because of a lightning strike. I am sure that it did happen in other regions, particularly, in the Midwest/ The installation was to run a very large conductor cable from the lightning rod to the ground. There were generally two rods on either end of the roof. I would theorize that a lightning strike should be directed to a ground rod placed a few feet from the tower rather than to travel under the base of the tower as some have suggested. I am going to ground the tower at the three legs with a copper strap and then to a ground rod about 3 feet from the tower. Also, the Empire State Building and other skyscrapers get struck many times during a thunder storm and I wonder if anyone knows if the lightning travels through the superstructure or through cables/straps to the base of the building and through ground rods. Thanks Dave, W3ST Publisher of the Collins Journal Secretary to the Collins Radio Association www.collinsra.com - the CRA Website Now with PayPal CRA Nets: 3805 Khz every Monday at 8 PM EST and 14255 every Saturday at 12 Noon EST - Original Message - From: "Gary Schafer" <[EMAIL PROTECTED]> To: "'Stevan A. White'" <[EMAIL PROTECTED]>; "'Discussion of AM Radio'" ; <[EMAIL PROTECTED]> Sent: Monday, June 12, 2006 10:10 PM Subject: [Boatanchors] RE: [AMRadio] Tower Construction Be careful when giving this advice. A UFER ground is a good SUPLEMENTAL ground in a tower base but it should not be the only ground. A large area like a floor of a building provides more surface for the lightning to dissipate. A tower concrete foundation may not be large enough by itself and there is the possibility of poor connections inside so that the concrete crack from a lightning strike if it is the only ground connection. It is always recommended that ground rods be attached to each tower leg in addition. 73 Gary K4FMX DO RUN THE GROUND THROUGH THE CONCRETE! Take a look at the information on this site first though. You may be glad you did. http://www.scott-inc.com/html/ufer.htm Best Regards, Steve White, W5SAW SW Commercial Electronics -Original Message- From: Ed Swynar [mailto:[EMAIL PROTECTED] Sent: Saturday, June 10, 2006 2:16 PM To: Discussion of AM Radio; [EMAIL PROTECTED] Subject: Re: [AMRadio] Tower Construction Hi Dave, I have a 48' tall, tapered, self-supporting "Delhi"-brand tower --- 6 sections at 8' long each. The prescribed / manufacturer's recommendation is to bolt a 3' straight formed extention at the base of each leg (total of 3), & to "suspend" these (a temporary wooden "cradle" will do admirably, as the cement sets) in a hole dug 4' square, & 4-1/2' deep --- the cement is to come but a few inches below the bottom legs of the actual tower section. Oh yes --- the bottom 1' of the square hole is to be "belled" outward a foot, or so. The documentation says this is good for heights of up to 64', or so...I've never gone beyond 48', & have never, EVER had an ounce of trouble in the two locations that I've had my tower up. BTW, the top of the tower as an old Cornell-Dubelier AR-44 rotator, & a 3-element Hy-Gain TH3 MkIII triband yagi... Use "industrial"-grade coarse cement, & do NOT run any ground leads through the block itself! ~73~ Eddy VE3CUI - VE3XZ ___ Boatanchors mailing list [EMAIL PROTECTED] http://mailman.qth.net/mailman/listinfo/boatanchors ** List Administrator - Duane Fischer, W8DBF/W9WZE ** ** For Assistance: [EMAIL PROTECTED] ** $$ For vintage radio info, see the HCI web site $$ http://www.w9wze.org
RE: [AMRadio] Tower Construction
I see that I left out a sentence. "Lay the appropriate length radials in the ground for your RF ground return and bond them to the ring." I was thinking it but failed to type it in. Gary makes some good points about high impedance paths for lightning. I agree that lightning will not make several sharp turns through all the connections I described. Radials will help dissipate lightning and static charges but you can only connect several radials to each ground rod without making somewhat of a mess. The ring affords you a connection path for many more radials which will provide a better RF ground return if that's your goal. Many standard broadcast AM towers have ground radials configured this way. The bottom line is, there's a lot to consider when designing and building a ground system. Do a little research and don't rush into it. Figure out what will best serve you for your installation and do what you can afford. That's all from me for now. Best wishes! Best Regards, Steve White, W5SAW SW Commercial Electronics -Original Message- From: Gary Schafer [mailto:[EMAIL PROTECTED] Sent: Monday, June 12, 2006 9:26 PM To: 'Stevan A. White'; 'Ed Swynar'; 'Discussion of AM Radio' Subject: RE: [AMRadio] Tower Construction >This affords you the > opportunity > to bond the tower, rebar, AND several copper clad ground rods together >for the best possible DC ground for your tower. If you want an RF >ground return for your installation, install a heavy duty copper ring >and bond it to the ground rods. > Best Regards, > Steve White, W5SAW > SW Commercial Electronics A good lightning ground is also a good RF ground. This means several radials should be installed along with the ground rods. A ring connecting ground rods around the tower does nothing for a lightning ground. The lowest impedance is in a straight line out away from the tower. A sharp turn at the junction of the "ring" to get over to the next ground rod in the "ring" looks like a high impedance path to the lightning as the sharp turn has considerable inductance. Also the other ground rods in the ring are already at the same potential as they are connected directly to the tower. The lightning will be carried out away from the tower in all directions. There will be no current carried by the ring connection so it is a waste of wire. The ground system would be better served by using that wire for another radial. 73 Gary K4FMX
RE: [AMRadio] Re: upside down reply buttons, sending to whom, and tops VS bottoms and other non AM tech stuff
> -Original Message- > From: [EMAIL PROTECTED] [mailto:amradio- > [EMAIL PROTECTED] On Behalf Of W5OMR/Geoff > Sent: Monday, June 12, 2006 10:52 PM > To: Discussion of AM Radio > Subject: [AMRadio] Re: upside down reply buttons, sending to whom, and > tops VS bottoms and other non AM tech stuff > > John E. Coleman (ARS WA5BXO) wrote: > > >This is almost like discussing politics on the air. HIHI > >But I will make a comment here any way. > > > >Dino and Geoff > > > > [much deleted] > > > >Brian > > > > [... again...] > > > John, your comments didn't go unread by me... but the way the list is > set up now, I'm fairly certain that only *I* got your reply. > > This is what the major crux of the problem is. Most people, when on a > list, just hit 'reply', and go. When the list is setup the way it USED > to be, the reply would go to the list. That's the way a Discussion list > is SUPPOSED to be.. so folks can DISCUSS (in my not so humble opinion). > > When you only reply to the sender, who has put something on the list, > then everyone else on the list suffers if someone only replies to the > sender, because the rest of the list can not benifit from the wisdom and > knowledge of someone's reply to a question. > > It is for that reason, above most all others, that I say leave the reply > option in the list software, as a reply-to-list function. If you -need- > to reply to an individual, then click 'reply to all' and that will THEN > include the original sender (as well as the list), and then it's a > simple matter of removing the discussion list address, so that the reply > only goes to the individual, instead of the whole list. Geoff, The problem is, it does not work that way! The way it was set up before, hitting "reply" or "reply to all" did exactly the same thing! They would both reply ONLY to the list. Neither would list the sender if you wanted to reply only to him. The way it is now you have a choice. 73 Gary K4FMX
Re: [AMRadio] How the reply button works
Brian Sherrod wrote: Before I actually hit the send key for "Reply All", I delete all unwanted recipients. Works fine so long as we remember to delete all "unwanted recipients" so they don't get duplicates. Which is why I think that the list should be reverted to it's previous state. If you then 'reply all', it only goes to the list -and- the message originator. Cross-posting was a bad thing to do before, and (as far as I'm concerned) it still is. -- Driving your AM Rig without a scope, is like driving your car at night, without headlights. (K4KYV) -- 73 = Best Regards, -Geoff/W5OMR
