Poor man's beverage and diversity
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My 160-meter transmitting antenna is a 'T' -- an 88-foot dipole with open-wire feeders
tied together and fed against some elevated radials running around the eaves of my house. The vertical part is about 40 feet (12.2m) high. I have always had the problem that this antenna picks up a huge amount of noise of all types. But I live on a lot that's about 50' x 120' in the middle of a city and there's very little room for additional antennas. A few minutes before the start of the ARRL 160m contest I decided to try something I'd heard about. I took about 180 feet (55m) of wire and laid it on the ground from my shack, across the backyard, around the back of my garage and all the way down the edge of the driveway. It turned out to be an excellent 160m receiving antenna! I expected that signals would be very weak, but they were almost as strong as on the transmitting antenna. My antenna analyzer showed an SWR of about 2.5:1. And, most important, the s/n ratio was much, much better. I connected it to the AUX input of the sub-receiver and activated diversity mode with a (very) long hold of the SUB button. I went to the CONFIG menu and set for SUB AF = BALANCE so that the sub's AF gain control would act as a balance control between the two receivers. This works great! I can hear signals get stronger in one ear when they QSB in the other. And for signals which come in better on one antenna than the other, I just turn the balance control. Even if you don't have a subreceiver, you should try the "poor man's beverage" (no, I don't mean wine in cardboard boxes) receiving antenna. Although the directivity is sort of arbitrary, the noise is way down compared to a vertical. The contest will still be going tonight. Try it, there is no antenna that is easier to install! -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
OT: Poor man's beverage and diversity
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In preparation for a 160M contest one winter I took a 5000' reel
of #22 ga insulated hook-up wire and tied the free end to a fence post. I then took off walking across the adjacent gold course and into the field beyond, the general direction of Japan while unspooling the wire behind me. The snow drifts kept the wire from laying completely on the ground, but at least there were no golf carts to snare it, and little likelihood of a stray snowmobile. (:-)) It worked well, but I now have a single turn hardline loop that does the tick just as well. Oh ... after the contest I reeled up back onto the reel and it's still in the barn. 73! Ken Kopp - K0PP [hidden email] _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
Re: Poor man's beverage and diversity
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In reply to this post by Vic K2VCO
Sounds like this one:
http://users.erols.com/k3mt/graswire/graswire.htm > > A few minutes before the start of the ARRL 160m contest I decided to try > something I'd heard about. I took about 180 feet (55m) of wire and laid it > on the ground from my shack, across the backyard, around the back of my > garage and all the way down the edge of the driveway. > > It turned out to be an excellent 160m receiving antenna! I expected that > signals would be very weak, but they were almost as strong as on the > transmitting antenna. My antenna analyzer showed an SWR of about 2.5:1. > And, most important, the s/n ratio was much, much better. > > I connected it to the AUX input of the sub-receiver and activated > diversity mode with a (very) long hold of the SUB button. I went to the > CONFIG menu and set for SUB AF = BALANCE so that the sub's AF gain control > would act as a balance control between the two receivers. > > This works great! I can hear signals get stronger in one ear when they QSB > in the other. And for signals which come in better on one antenna than the > other, I just turn the balance control. > > Even if you don't have a subreceiver, you should try the "poor man's > beverage" (no, I don't mean wine in cardboard boxes) receiving antenna. > Although the directivity is sort of arbitrary, the noise is way down > compared to a vertical. > > The contest will still be going tonight. Try it, there is no antenna that > is easier to install! > -- > 73, > Vic, K2VCO > Fresno CA > http://www.qsl.net/k2vco > Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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David Cutter wrote:
> Sounds like this one: > <http://users.erols.com/k3mt/graswire/graswire.htm> > [referring to my original post] >> A few minutes before the start of the ARRL 160m contest I decided to >> try something I'd heard about. I took about 180 feet (55m) of wire and >> laid it on the ground from my shack, across the backyard, around the >> back of my garage and all the way down the edge of the driveway. My 180' wire was resonant at about 2.2 mHz, where the SWR was around 1.4:1. Since signals not down all that much compared to the vertical, I am sure that it would have worked as a transmitting antenna, and possibly without a tuner if I had lengthened it a bit. The interesting part is that it doesn't need to be straight to work. This could be very useful in a real emergency. -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
Re: Poor man's beverage and diversity
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So, if you made it 19% longer with some zig-zags, it would be resonant in
the middle of the cw band and no need for matching, just connect to coax. I imagine it's fairly broad band being so close to the earth. David G3UNA > David Cutter wrote: >> Sounds like this one: >> <http://users.erols.com/k3mt/graswire/graswire.htm> >> > > [referring to my original post] >>> A few minutes before the start of the ARRL 160m contest I decided to try >>> something I'd heard about. I took about 180 feet (55m) of wire and laid >>> it on the ground from my shack, across the backyard, around the back of >>> my garage and all the way down the edge of the driveway. > > My 180' wire was resonant at about 2.2 mHz, where the SWR was around > 1.4:1. Since signals not down all that much compared to the vertical, I am > sure that it would have worked as a transmitting antenna, and possibly > without a tuner if I had lengthened it a bit. > > The interesting part is that it doesn't need to be straight to work. This > could be very useful in a real emergency. > -- > 73, > Vic, K2VCO > Fresno CA > http://www.qsl.net/k2vco _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
Re: Poor man's beverage, Ground Cooperative Antennas
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something that will enhance such an antenna is to raise a portion of
the wire off the ground 2 or 3 feet (use an arrow, staple to a wood fence, or field expedient bush etc), leaving the last 25% or so laying on the ground. the elevated portion will have substantially improved radiation performance and will have a faster velocity, but the 25% left on the ground will act as the beverage termination... If you do this with the long leg of K3MT's Grasswire Windom (eg 70 ft elevated, 26 ft on ground) you'll get gain in the direction of the long leg, and a reasonable FB ration too... The back leg (short side) can be cut down to about 30 ft with out too much impact on the swr at 40m and above. Another couple benefits are: the vertical lobes which a significant to an elevated beverage are dramatically smoothed, and the antennas may be array'ed at relatively close spacing. Two of the K3MT Grasswire Windoms can be laid out in parallel about 25 ft apart, and fed in phase ( simple power splitter and equal length coax is good enough) as a two element broad band array. Such an array will approach -3 dbi (~20 TOA) at 15m. Some additional info can be found by googling " Eyring Low Profile antenna " Have fun niel WA7SSA On Dec 7, 2008, at 10:23 AM, David Cutter wrote: > So, if you made it 19% longer with some zig-zags, it would be > resonant in the middle of the cw band and no need for matching, just > connect to coax. I imagine it's fairly broad band being so close to > the earth. > > David > G3UNA > > > >> David Cutter wrote: >>> Sounds like this one: >>> <http://users.erols.com/k3mt/graswire/graswire.htm> >>> >> >> [referring to my original post] >>>> A few minutes before the start of the ARRL 160m contest I decided >>>> to try something I'd heard about. I took about 180 feet (55m) of >>>> wire and laid it on the ground from my shack, across the >>>> backyard, around the back of my garage and all the way down the >>>> edge of the driveway. >> >> My 180' wire was resonant at about 2.2 mHz, where the SWR was >> around 1.4:1. Since signals not down all that much compared to the >> vertical, I am sure that it would have worked as a transmitting >> antenna, and possibly without a tuner if I had lengthened it a bit. >> >> The interesting part is that it doesn't need to be straight to >> work. This could be very useful in a real emergency. >> -- >> 73, >> Vic, K2VCO >> Fresno CA >> http://www.qsl.net/k2vco > > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by Vic K2VCO
G'day,
| My 180' wire was resonant at about 2.2 mHz, where the SWR was around 1.4:1. Since signals Spectacularly slow velocity of propagation there. Here we are, custodians of a technical hobby, one that we have to achieve qualification in for licensing and we can't get our units right. MHz, kHz, yes but not mhz, Mhz, mHz (unless you really mean it), or Khz please. The illiterate computer press is a prime example of splashing meaningless mhz clock speeds on their front covers. Apologies if this is correct in the USA, like meter for the SI unit of length metre. Regards, Mike VP8NO _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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Wait just a minute here Mike!!
What happened to MC and KC? If your on 20 meters and move to avoid the QRM did you go up 2 Kay Cee's or 2 Kilo Hertz's . With split what is it? Up 20 XXX ? 73, Bob K2TK EX KN2TKR & K2TKR Mike Harris wrote: >G'day, > >| My 180' wire was resonant at about 2.2 mHz, where the SWR was around >1.4:1. Since signals > >Spectacularly slow velocity of propagation there. > >Here we are, custodians of a technical hobby, one that we have to achieve >qualification in for licensing and we can't get our units right. MHz, >kHz, yes but not mhz, Mhz, mHz (unless you really mean it), or Khz please. >The illiterate computer press is a prime example of splashing meaningless >mhz clock speeds on their front covers. > >Apologies if this is correct in the USA, like meter for the SI unit of >length metre. > >Regards, > >Mike VP8NO > > > > Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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On Sun, 07 Dec 2008 14:32:28 -0500, you wrote:
>Wait just a minute here Mike!! > >What happened to MC and KC? > >If your on 20 meters and move to avoid the QRM did you go up 2 Kay >Cee's or 2 >Kilo Hertz's . With split what is it? Up 20 XXX ? > >73, >Bob >K2TK EX KN2TKR & K2TKR In my opinion with no disrespect, Mr. Hertz was only a man. KC and MC were appropriately named as measurements of cycles per second and should not have been renamed. Just my opinion, I could be wrong. [snip] Tom Childers, N5GE K3 #806, XV144, XV432 Mini-Modules http://www.eQSL.cc/Member.cfm?N5GE http://www.n5ge.com Few elected officials or their children have ever lived the life of the citizens they represent, nor did their parents or grandparents. How can they know what you and I want or need? _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Amateur Radio Operator N5GE
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Wait just a minute. Those old units should be "kc" and "Mc" to be correct.
The proper units multiplier designations and their abbreviations are: kilo = k = 1000 Mega = M = 1,000,000 milli = m = .001 That is why the capitalization/non-capitalization of "M/m" is so important. 73, Don W3FPR Tom wrote: > On Sun, 07 Dec 2008 14:32:28 -0500, you wrote: > > >> Wait just a minute here Mike!! >> >> What happened to MC and KC? >> >> If your on 20 meters and move to avoid the QRM did you go up 2 Kay >> Cee's or 2 >> Kilo Hertz's . With split what is it? Up 20 XXX ? >> >> 73, >> Bob >> K2TK EX KN2TKR & K2TKR >> > > In my opinion with no disrespect, Mr. Hertz was only a man. KC and MC were > appropriately named as measurements of cycles per second and should not have > been renamed. Just my opinion, I could be wrong. > > [snip] > > Tom Childers, N5GE > > K3 #806, XV144, XV432 > Mini-Modules > > http://www.eQSL.cc/Member.cfm?N5GE > http://www.n5ge.com > > Few elected officials or > their children have ever > lived the life of the > citizens they represent, > nor did their parents or > grandparents. > > How can they know what you > and I want or need? > > > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > ------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG - http://www.avg.com > Version: 8.0.176 / Virus Database: 270.9.15/1837 - Release Date: 12/8/2008 9:38 AM > > Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by N5GE
Silly thread -- :-) -- but it is important to keep one's facts
straight. The Cycle per Second was named the Hertz in compliance with a long tradition in the scientific community of naming scientific units of measure after the folks who did seminal work in those areas of science. Mssrs Alessandro Volta (voltage), Andre-Marie Ampere (current), Georg Ohm (resistance), James Watt (power), Nicola Tesla (magnetic flux density), Blaise Pascal (pressure), and Isaac Newton (force), to name just a few I can think of off the top of my head, were all "just men". :-) Heinrich Hertz (electromagnetic frequency) takes his rightful place in this pantheon proudly. Bill W5WVO ----- Original Message ----- From: "Tom" <[hidden email]> To: "Elecraft Reflector" <[hidden email]> Cc: "Elecraft Reflector" <[hidden email]> Sent: Sunday, December 07, 2008 9:24 PM Subject: Re: [Elecraft] Units > On Sun, 07 Dec 2008 14:32:28 -0500, you wrote: > > >Wait just a minute here Mike!! > > > >What happened to MC and KC? > > > >If your on 20 meters and move to avoid the QRM did you go up 2 Kay > >Cee's or 2 > >Kilo Hertz's . With split what is it? Up 20 XXX ? > > > >73, > >Bob > >K2TK EX KN2TKR & K2TKR > > In my opinion with no disrespect, Mr. Hertz was only a man. KC and MC were > appropriately named as measurements of cycles per second and should not have > been renamed. Just my opinion, I could be wrong. > > [snip] > > Tom Childers, N5GE > > K3 #806, XV144, XV432 > Mini-Modules > > http://www.eQSL.cc/Member.cfm?N5GE > http://www.n5ge.com > > Few elected officials or > their children have ever > lived the life of the > citizens they represent, > nor did their parents or > grandparents. > > How can they know what you > and I want or need? > > > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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Bill W5WVO wrote:
> Silly thread -- :-) -- but it is important to keep one's facts > straight. The Cycle per Second was named the Hertz in compliance > with a long tradition in the scientific community of naming > scientific units of measure after the folks who did seminal work > in those areas of science. Mssrs Alessandro Volta (voltage), > Andre-Marie Ampere (current), Georg Ohm (resistance), James Watt > (power), Nicola Tesla (magnetic flux density), Blaise Pascal > (pressure), and Isaac Newton (force), to name just a few I can > think of off the top of my head, were all "just men". :-) > Heinrich Hertz (electromagnetic frequency) takes his rightful > place in this pantheon proudly. But given that the radian already is an SI unit, the Hz is redundant. Radians/s is sufficient. Jon LA4RT _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by Don Wilhelm-4
On Mon, 08 Dec 2008 07:58:53 -0500, you wrote:
>Wait just a minute. Those old units should be "kc" and "Mc" to be correct. >The proper units multiplier designations and their abbreviations are: >kilo = k = 1000 >Mega = M = 1,000,000 >milli = m = .001 > >That is why the capitalization/non-capitalization of "M/m" is so important. > >73, >Don W3FPR I agree 100% Don. Thanks for pointing that out. Tom, N5GE _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Amateur Radio Operator N5GE
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----- Original Message ----- From: "Tom" <[hidden email]> To: "Elecraft Reflector" <[hidden email]> Sent: Monday, December 08, 2008 7:49 AM Subject: Re: [Elecraft] Units On Mon, 08 Dec 2008 07:58:53 -0500, you wrote: >Wait just a minute. Those old units should be "kc" and "Mc" to be correct. >The proper units multiplier designations and their abbreviations are: >kilo = k = 1000 >Mega = M = 1,000,000 >milli = m = .001 > >That is why the capitalization/non-capitalization of "M/m" is so important. > >73, >Don W3FPR I agree 100% Don. Thanks for pointing that out. Tom, N5GE _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by N5GE
I think I agree with Don too, but I also learned something. I had never
thought about the fact that "kc" needed to have a lower case "k". I'm one of those old guys who still has trouble speaking in "herz" vs. "cps" unless I really stop to think about it. I think I have plenty of company though! The big "M" vs. small "m" is something I'm very aware of usually, but I'm not sure what a big "K" indicates vs. a small "k". I've always just considered either to mean "kilo". Interestingly, back when I went to work for the bank I retired from (I went there from the public accounting field), I was somewhat dismayed to discover that people were consistently abbreviating "thousands" by using a large "M". If they wanted to say "millions", they were using the expression "MM". Now I know that the financial industry does use the abbreviation "K" (or "k")for "thousands", and you see it all the time in reference to bond issues, etc. So I put out a memo criticizing the use of "M" for "thousands", and got a whole bunch of flak back about it. I simply expanded my explanation in a follow-up memo, pointing out the basis for using such abbreviations--K=kilo, M=mega, and m=milli. I said if anyone could provide published authority for using "M" for "thousand", I would concede. No one responded, and many, but not all, dropped the practice. I may have erred, based on Don's memo, by using a large "K" for kilo however. But it's too late now--I'm retired!!!! But I still have no idea how they ever got started using "M" that way. It sure didn't make any sense to me. Dave W7AQK ----- Original Message ----- From: "Tom" <[hidden email]> To: "Elecraft Reflector" <[hidden email]> Sent: Monday, December 08, 2008 7:49 AM Subject: Re: [Elecraft] Units On Mon, 08 Dec 2008 07:58:53 -0500, you wrote: >Wait just a minute. Those old units should be "kc" and "Mc" to be correct. >The proper units multiplier designations and their abbreviations are: >kilo = k = 1000 >Mega = M = 1,000,000 >milli = m = .001 > >That is why the capitalization/non-capitalization of "M/m" is so important. > >73, >Don W3FPR I agree 100% Don. Thanks for pointing that out. Tom, N5GE _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by Don Wilhelm-4
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In reply to this post by w7aqk
M is the Roman numeral for 1000.
Just a thought. David (M6SPV) > From: [hidden email] > To: [hidden email]; [hidden email] > Subject: Re: [Elecraft] Units > Date: Mon, 8 Dec 2008 09:03:07 -0700 > CC: [snip] > But I still have no idea how they ever got > started using "M" that way. It sure didn't make any sense to me. Read amazing stories to your kids on Messenger. Try it Now! _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by w7aqk
G'day,
| The big "M" vs. small "m" is something I'm very aware of usually, but I'm | not sure what a big "K" indicates vs. a small "k". I've always just | considered either to mean "kilo". Most prefixes which make a unit bigger are written in capital letters (M, G, T etc) and when they make a unit smaller lower case is used (m, n, p etc). One of the exceptions is kilo (k) which is used to avoid possible confusion with kelvin (K). Regards, Mike VP8NO _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by w7aqk
M = 1000 in Roman numerals. Perhaps that's it?
Julian, G4ILO. K2 #392 K3 #222 KX3 #110
* G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html |
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In reply to this post by Jon Kåre Hellan
Actually a radian is an angular measurement whereas a Hertz (hertz) is a frequency measurement. 1 radian = 57.2958 degrees 1 hertz = 1 cycle per second Barry VE3CDX/W7 -----Original Message----- From: Jon K Hellan [mailto:[hidden email]] Sent: Monday, December 08, 2008 5:14 AM To: Elecraft Reflector Subject: Re: [Elecraft] Units Bill W5WVO wrote: > Silly thread -- :-) -- but it is important to keep one's facts > straight. The Cycle per Second was named the Hertz in compliance with > a long tradition in the scientific community of naming scientific > units of measure after the folks who did seminal work in those areas > of science. Mssrs Alessandro Volta (voltage), Andre-Marie Ampere > (current), Georg Ohm (resistance), James Watt (power), Nicola Tesla > (magnetic flux density), Blaise Pascal (pressure), and Isaac Newton > (force), to name just a few I can think of off the top of my head, > were all "just men". :-) Heinrich Hertz (electromagnetic frequency) > takes his rightful place in this pantheon proudly. But given that the radian already is an SI unit, the Hz is redundant. Radians/s is sufficient. Jon LA4RT _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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