[50mhz] W5WVO A505S modification
Bill VanAlstyne W5WVO
w5wvo at cybermesa.net
Wed Aug 25 23:11:30 EDT 2010
My modified A50-5S does look a lot like the M2 6M5X antenna, as I've pointed
out many times -- but it wasn't "based" on it. When I designed the antenna
using Yagi Optimizer, I'd never laid eyes on a 6M5X and had no idea what it
looked like. The modification dimensions were derived entirely from first
principles, given the existing hardware constraints. The fact that the two
designs are nearly identical (with the 6M5X having a slightly longer boom)
simply means that both M2 and I came up with a very good design based on
computer modeling of the best compromise between forward gain and a clean
pattern.
I heartily endorse replacing the gamma match with a balanced matching
system, and mentioned in my paper that this would be a good thing for
somebody to attempt. (I know of a couple of guys who actually did this with
good results.) My own two modified, stacked antennas still sport their
original gamma matches, though, and they continue to maintain a flat 1:1 SWR
at the design frequency many years after being assembled and raised.
Bill W5WVO
--------------------------------------------------
From: "Mark Drieci (KA4MAY)" <guitar0145 at gmail.com>
Sent: Wednesday, August 25, 2010 20:21
To: <50mhz at mailman.qth.net>
Subject: [50mhz] W5WVO A505S modification
> Earlier this summer I modified my A505S using the W5WVO specification,
> which
> from what I've read, is based on the M2 6M5X design. I am very pleased
> with
> the greatly improved Front to Back and side rejection. I didn't have the
> time to complete a detailed comparison on increase in gain but since I
> used
> an old scrap boom piece from a discarded A3S, the modification cost me all
> of $4, when the stainless clamps were purchased. I've left the Cushcraft
> matching system in place for now, but plan to change it before this
> winter.
> If only I can find another one used, so that I can stack them!
>
> Mark - KA4MAY
>
> -----Original Message-----
> From: 50mhz-bounces at mailman.qth.net [mailto:50mhz-bounces at mailman.qth.net]
> On Behalf Of 50mhz-request at mailman.qth.net
> Sent: Tuesday, August 24, 2010 9:40 AM
> To: 50mhz at mailman.qth.net
> Subject: 50mhz Digest, Vol 79, Issue 9
>
> Send 50mhz mailing list submissions to
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>
>
> Today's Topics:
>
> 1. Yagis: an economical solution that doesn't involve a lot of
> work. (N8WWM EN81)
> 2. Re: Yagis (KD7JYK DM09)
> 3. Re: Yagis: an economical solution that doesn't involve a lot
> of work. (J.Gordon Beattie, Jr., W2TTT)
> 4. Re: Yagis: an economical solution that doesn't involve alot
> of work. (Carl)
> 5. Re: Yagis (Bill VanAlstyne W5WVO)
> 6. Re: Yagis (Cecil Acuff)
> 7. Re: Yagis: an economical solution that doesn't involve alot
> of work. (J.Gordon Beattie, Jr., W2TTT)
> 8. Re: Yagis: an economical solution that doesn't involve alotof
> work. (Carl)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 24 Aug 2010 00:09:50 GMT
> From: "N8WWM EN81" <fiftymegs at juno.com>
> Subject: [50mhz] Yagis: an economical solution that doesn't involve a
> lot of work.
> To: 50mhz at mailman.qth.net
> Message-ID: <20100823.200950.10319.0 at webmail03.vgs.untd.com>
> Content-Type: text/plain; charset=windows-1252
>
> Gang,
>
> Being a cheap SOB, I'd take that Cuscraft 5 element, clean it up real
> good,
> and get the tubing to make the boom as long as a 6M5X. You could
> Use the M2 spacings and save a bunch of money to give the XYL for a "mad
> money" shopping trip.
>
> Getting a better antenna at low cost AND pleasing the wife isn't a bad
> proposition at all.
>
> 73 Doug
>
>
>
>
> ____________________________________________________________
> Go Back to School
> Grant Funding May Be Available to Those Who Qualify
> http://thirdpartyoffers.juno.com/TGL3131/4c730e0c21d638d7be8st01vuc
>
>
> ------------------------------
>
> Message: 2
> Date: Mon, 23 Aug 2010 17:08:46 -0700
> From: "KD7JYK DM09" <kd7jyk at earthlink.net>
> Subject: Re: [50mhz] Yagis
> To: "Mark D. Tetrault" <mdtetrault at gmail.com>, <50mhz at mailman.qth.net>
> Message-ID: <00f901cb4321$a845ce80$eea0f604 at mainframe>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Scala, Kathrein, Maxrad, PCTel comes to mind. Pricey, but some of them
> are
> extremely high quality.
>
> Kurt
>
> ----- Original Message -----
> From: "Mark D. Tetrault" <mdtetrault at gmail.com>
>
> : Trouble is I cannot remember all the yagis that are recommended. I
> : know M2 builds a good one. Who else should I consider?
>
>
>
> ------------------------------
>
> Message: 3
> Date: Tue, 24 Aug 2010 00:23:58 -0000
> From: "J.Gordon Beattie, Jr., W2TTT" <w2ttt at att.net>
> Subject: Re: [50mhz] Yagis: an economical solution that doesn't
> involve a lot of work.
> To: "'N8WWM EN81'" <fiftymegs at juno.com>, <50mhz at mailman.qth.net>
> Message-ID: <67CA14A88DFA4CCA8A976910E43F4971 at W2TTTCF293>
> Content-Type: text/plain; charset="us-ascii"
>
> Doug,
> Yes, and while you are at it, change the gamma match to be one made of a
> coax cable core inside of an aluminum tube as is done with the Directive
> Systems 50-4 yagi. I found that the ceramic cap embedded in the feed is
> lossy.
>
> Thanks & 73,
> Gordon Beattie, W2TTT
> 201.314.6964
>
>
> -----Original Message-----
> From: 50mhz-bounces at mailman.qth.net [mailto:50mhz-bounces at mailman.qth.net]
> On Behalf Of N8WWM EN81
> Sent: Tuesday, August 24, 2010 12:10 AM
> To: 50mhz at mailman.qth.net
> Subject: [50mhz] Yagis: an economical solution that doesn't involve a lot
> ofwork.
>
> Gang,
>
> Being a cheap SOB, I'd take that Cuscraft 5 element, clean it up real
> good,
> and get the tubing to make the boom as long as a 6M5X. You could
> Use the M2 spacings and save a bunch of money to give the XYL for a "mad
> money" shopping trip.
>
> Getting a better antenna at low cost AND pleasing the wife isn't a bad
> proposition at all.
>
> 73 Doug
>
>
>
>
> ____________________________________________________________
> Go Back to School
> Grant Funding May Be Available to Those Who Qualify
> http://thirdpartyoffers.juno.com/TGL3131/4c730e0c21d638d7be8st01vuc
> ______________________________________________________________
> 50mhz mailing list
> Home: http://mailman.qth.net/mailman/listinfo/50mhz
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:50mhz at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>
> __________ Information from ESET Smart Security, version of virus
> signature
> database 5391 (20100823) __________
>
> The message was checked by ESET Smart Security.
>
> http://www.eset.com
>
>
>
> __________ Information from ESET Smart Security, version of virus
> signature
> database 5391 (20100823) __________
>
> The message was checked by ESET Smart Security.
>
> http://www.eset.com
>
>
>
>
> ------------------------------
>
> Message: 4
> Date: Mon, 23 Aug 2010 21:19:04 -0400
> From: "Carl" <km1h at jeremy.mv.com>
> Subject: Re: [50mhz] Yagis: an economical solution that doesn't
> involve alot of work.
> To: "J.Gordon Beattie, Jr., W2TTT" <w2ttt at att.net>, "'N8WWM EN81'"
> <fiftymegs at juno.com>, <50mhz at mailman.qth.net>
> Message-ID: <00cc01cb432a$59e30a10$6501a8c0 at DAVES>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> Which is what CC did on their HF monobanders for decades. Personally I
> prefer an all metal T Match for 6M, no loss, better balance, higher input
> impedance, better bandwith with efficiency. CC used a T on the 6M Boomer.
>
> Carl
> KM1H
>
>
> ----- Original Message -----
> From: "J.Gordon Beattie, Jr., W2TTT" <w2ttt at att.net>
> To: "'N8WWM EN81'" <fiftymegs at juno.com>; <50mhz at mailman.qth.net>
> Sent: Monday, August 23, 2010 8:23 PM
> Subject: Re: [50mhz] Yagis: an economical solution that doesn't involve
> alot
>
> of work.
>
>
>> Doug,
>> Yes, and while you are at it, change the gamma match to be one made of a
>> coax cable core inside of an aluminum tube as is done with the Directive
>> Systems 50-4 yagi. I found that the ceramic cap embedded in the feed is
>> lossy.
>>
>> Thanks & 73,
>> Gordon Beattie, W2TTT
>> 201.314.6964
>>
>>
>> -----Original Message-----
>> From: 50mhz-bounces at mailman.qth.net
>> [mailto:50mhz-bounces at mailman.qth.net]
>> On Behalf Of N8WWM EN81
>> Sent: Tuesday, August 24, 2010 12:10 AM
>> To: 50mhz at mailman.qth.net
>> Subject: [50mhz] Yagis: an economical solution that doesn't involve a lot
>> ofwork.
>>
>> Gang,
>>
>> Being a cheap SOB, I'd take that Cuscraft 5 element, clean it up real
>> good,
>> and get the tubing to make the boom as long as a 6M5X. You could
>> Use the M2 spacings and save a bunch of money to give the XYL for a "mad
>> money" shopping trip.
>>
>> Getting a better antenna at low cost AND pleasing the wife isn't a bad
>> proposition at all.
>>
>> 73 Doug
>>
>>
>>
>>
>> ____________________________________________________________
>> Go Back to School
>> Grant Funding May Be Available to Those Who Qualify
>> http://thirdpartyoffers.juno.com/TGL3131/4c730e0c21d638d7be8st01vuc
>> ______________________________________________________________
>> 50mhz mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/50mhz
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:50mhz at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>>
>> __________ Information from ESET Smart Security, version of virus
>> signature
>> database 5391 (20100823) __________
>>
>> The message was checked by ESET Smart Security.
>>
>> http://www.eset.com
>>
>>
>>
>> __________ Information from ESET Smart Security, version of virus
>> signature
>> database 5391 (20100823) __________
>>
>> The message was checked by ESET Smart Security.
>>
>> http://www.eset.com
>>
>>
>> ______________________________________________________________
>> 50mhz mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/50mhz
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:50mhz at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>
>
>
> ------------------------------
>
> Message: 5
> Date: Tue, 24 Aug 2010 01:34:25 -0000
> From: "Bill VanAlstyne W5WVO" <w5wvo at cybermesa.net>
> Subject: Re: [50mhz] Yagis
> To: "Mark D. Tetrault" <mdtetrault at gmail.com>, <50mhz at mailman.qth.net>
> Message-ID: <8ABA1ACC9F2D4936BE460114DE62D182 at BILLHP9250>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> Mark,
>
> If cost is a significant factor in your decision, you might consider
> modifying your A50-5S yagi according to my design. It will cost you about
> $20 max. It has been done by scores of amateurs with good success. The
> computer-modeled design will give you a yagi very similar in appearance
> and
> performance to the M2 6M5X. All you have to buy or otherwise procure is a
> 6-ft length of 1-1/2" x 0.058" wall aluminum tubing to extend the boom and
> a
>
> couple of hose clamps. Everything else is just changing design dimensions
> and readjusting the gamma match.
>
> You can find the paper here:
>
> http://www.joeunkit.co.kr/upload/upload251/A50-5S_w5wvo.pdf
>
> I don't know who this Korean site is, or how my paper got on it, but...
> there it is. :-)
>
> Bill W5WVO
>
> --------------------------------------------------
> From: "Mark D. Tetrault" <mdtetrault at gmail.com>
> Sent: Monday, August 23, 2010 22:18
> To: <50mhz at mailman.qth.net>
> Subject: [50mhz] Yagis
>
>> OK I'm having mind fart.
>>
>> I've used Cushcraft's 5 element yagi for years with good results. I
>> have now moved to AZ and will be putting up a 35' tower. My CCraft 5
>> el is getting old so time to eihter replace it with a new one, or buy
>> something else.
>>
>> Trouble is I cannot remember all the yagis that are recommended. I
>> know M2 builds a good one. Who else should I consider?
>>
>> Tnx,
>> Mark
>> AA1OV
>>
>>
>>
>> Di-Mar Imaging & Design
>> Quality Campground Maps & Brochures
>> Concord, NH
>> (603) 387-9392
>> www.di-mar.com
>> ______________________________________________________________
>> 50mhz mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/50mhz
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:50mhz at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>>
>
>
>
> ------------------------------
>
> Message: 6
> Date: Mon, 23 Aug 2010 22:48:49 -0500
> From: "Cecil Acuff" <chacuff at cableone.net>
> Subject: Re: [50mhz] Yagis
> To: "Danny Pease" <dpease at adams.net>, "'Austin'" <austin at k4amk.us>,
> "'Mark D. Tetrault'" <mdtetrault at gmail.com>
> Cc: 50mhz at mailman.qth.net
> Message-ID: <C0FDFB596B6846429ABD098E9850799F at acuffmain>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> I had to wait 3 months for mine but it was worth the wait. Were at the
> end
> of the season at this point...I'd wait again if it were me.
>
> Cecil
> K5DL
> ----- Original Message -----
> From: "Danny Pease" <dpease at adams.net>
> To: "'Austin'" <austin at k4amk.us>; "'Mark D. Tetrault'"
> <mdtetrault at gmail.com>
> Cc: <50mhz at mailman.qth.net>
> Sent: Monday, August 23, 2010 6:48 PM
> Subject: Re: [50mhz] Yagis
>
>
>>I recently heard Dave has been very slow delivering ham antennas, military
>> orders are his priority. Not trying to dissuade anyone (I use, like and
>> recommend his antennas too), just passing on what I have head for others.
>> If
>> I were to order one from Dave right now, I would make sure he gave me an
>> acceptable shipping date before I finalized the deal.
>>
>> NG9R
>>
>>
>> -----Original Message-----
>> From: 50mhz-bounces at mailman.qth.net
>> [mailto:50mhz-bounces at mailman.qth.net]
>> On Behalf Of Austin
>> Sent: Monday, August 23, 2010 6:35 PM
>> To: Mark D. Tetrault
>> Cc: 50mhz at mailman.qth.net
>> Subject: Re: [50mhz] Yagis
>>
>> Mark,
>>
>> I definitely would consider Directive Systems in your decision process.
>> David is great to work with. On the VHF reflector when someone recently
>> asked about spacing suggestions, it was pretty much unanimous pointing
>> the person to the Directive Systems where David has some really good
>> information. Speaking to him, you quickly can tell that he has a
>> passion for antennas.
>>
>> 73 and good luck!
>>
>> Austin
>> k4amk
>>
>>
>>
>> -------- Original Message --------
>> Subject: [50mhz] Yagis
>> From: Mark D. Tetrault <mdtetrault at gmail.com>
>> Date: Mon, August 23, 2010 5:18 pm
>> To: 50mhz at mailman.qth.net
>>
>> OK I'm having mind fart.
>>
>> I've used Cushcraft's 5 element yagi for years with good results. I
>> have now moved to AZ and will be putting up a 35' tower. My CCraft 5
>> el is getting old so time to eihter replace it with a new one, or buy
>> something else.
>>
>> Trouble is I cannot remember all the yagis that are recommended. I
>> know M2 builds a good one. Who else should I consider?
>>
>> Tnx,
>> Mark
>> AA1OV
>>
>>
>>
>> Di-Mar Imaging & Design
>> Quality Campground Maps & Brochures
>> Concord, NH
>> (603) 387-9392
>> www.di-mar.com
>> ______________________________________________________________
>> 50mhz mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/50mhz
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:50mhz at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>> ______________________________________________________________
>> 50mhz mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/50mhz
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:50mhz at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> No virus found in this incoming message.
>> Checked by AVG - www.avg.com
>> Version: 9.0.851 / Virus Database: 271.1.1/3063 - Release Date: 08/23/10
>> 01:35:00
>>
>> ______________________________________________________________
>> 50mhz mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/50mhz
>> Help: http://mailman.qth.net/mmfaq.htm
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>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>
>
>
> ------------------------------
>
> Message: 7
> Date: Tue, 24 Aug 2010 05:13:15 -0000
> From: "J.Gordon Beattie, Jr., W2TTT" <w2ttt at att.net>
> Subject: Re: [50mhz] Yagis: an economical solution that doesn't
> involve alot of work.
> To: "'Carl'" <km1h at jeremy.mv.com>, "'N8WWM EN81'"
> <fiftymegs at juno.com>, <50mhz at mailman.qth.net>
> Message-ID: <0968973A17404139BDD6C7E7DEE7DDA2 at W2TTTCF293>
> Content-Type: text/plain; charset="us-ascii"
>
> Carl,
> Not exactly...I was proposing a simple coax core and aluminum tube type of
> gamma match, not what CC did on HF...I'm thinking this is a decent
> compromise between the bogus ceramic gamma match and the T match.
>
> Thanks & 73,
> Gordon Beattie, W2TTT
> 201.314.6964
>
>
> -----Original Message-----
> From: Carl [mailto:km1h at jeremy.mv.com]
> Sent: Tuesday, August 24, 2010 1:19 AM
> To: J.Gordon Beattie, Jr., W2TTT; 'N8WWM EN81'; 50mhz at mailman.qth.net
> Subject: Re: [50mhz] Yagis: an economical solution that doesn't involve
> alot
> of work.
>
> Which is what CC did on their HF monobanders for decades. Personally I
> prefer an all metal T Match for 6M, no loss, better balance, higher input
> impedance, better bandwith with efficiency. CC used a T on the 6M Boomer.
>
> Carl
> KM1H
>
>
> ----- Original Message -----
> From: "J.Gordon Beattie, Jr., W2TTT" <w2ttt at att.net>
> To: "'N8WWM EN81'" <fiftymegs at juno.com>; <50mhz at mailman.qth.net>
> Sent: Monday, August 23, 2010 8:23 PM
> Subject: Re: [50mhz] Yagis: an economical solution that doesn't involve
> alot
>
> of work.
>
>
>> Doug,
>> Yes, and while you are at it, change the gamma match to be one made of a
>> coax cable core inside of an aluminum tube as is done with the Directive
>> Systems 50-4 yagi. I found that the ceramic cap embedded in the feed is
>> lossy.
>>
>> Thanks & 73,
>> Gordon Beattie, W2TTT
>> 201.314.6964
>>
>>
>> -----Original Message-----
>> From: 50mhz-bounces at mailman.qth.net
>> [mailto:50mhz-bounces at mailman.qth.net]
>> On Behalf Of N8WWM EN81
>> Sent: Tuesday, August 24, 2010 12:10 AM
>> To: 50mhz at mailman.qth.net
>> Subject: [50mhz] Yagis: an economical solution that doesn't involve a lot
>> ofwork.
>>
>> Gang,
>>
>> Being a cheap SOB, I'd take that Cuscraft 5 element, clean it up real
>> good,
>> and get the tubing to make the boom as long as a 6M5X. You could
>> Use the M2 spacings and save a bunch of money to give the XYL for a "mad
>> money" shopping trip.
>>
>> Getting a better antenna at low cost AND pleasing the wife isn't a bad
>> proposition at all.
>>
>> 73 Doug
>>
>>
>>
>>
>> ____________________________________________________________
>> Go Back to School
>> Grant Funding May Be Available to Those Who Qualify
>> http://thirdpartyoffers.juno.com/TGL3131/4c730e0c21d638d7be8st01vuc
>> ______________________________________________________________
>> 50mhz mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/50mhz
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:50mhz at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>>
>> __________ Information from ESET Smart Security, version of virus
>> signature
>> database 5391 (20100823) __________
>>
>> The message was checked by ESET Smart Security.
>>
>> http://www.eset.com
>>
>>
>>
>> __________ Information from ESET Smart Security, version of virus
>> signature
>> database 5391 (20100823) __________
>>
>> The message was checked by ESET Smart Security.
>>
>> http://www.eset.com
>>
>>
>> ______________________________________________________________
>> 50mhz mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/50mhz
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:50mhz at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>
>
> __________ Information from ESET Smart Security, version of virus
> signature
> database 5391 (20100823) __________
>
> The message was checked by ESET Smart Security.
>
> http://www.eset.com
>
>
>
> __________ Information from ESET Smart Security, version of virus
> signature
> database 5391 (20100823) __________
>
> The message was checked by ESET Smart Security.
>
> http://www.eset.com
>
>
>
>
> ------------------------------
>
> Message: 8
> Date: Tue, 24 Aug 2010 09:39:28 -0400
> From: "Carl" <km1h at jeremy.mv.com>
> Subject: Re: [50mhz] Yagis: an economical solution that doesn't
> involve alotof work.
> To: "J.Gordon Beattie, Jr., W2TTT" <w2ttt at att.net>,
> <50mhz at mailman.qth.net>
> Message-ID: <005601cb4391$c87f0e80$6501a8c0 at DAVES>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> CC used an aluminum tube with a length of RG-213 minus outer jacket and
> shield as one side of the gamma capacitor.
>
> Carl
> KM1H
>
>
> ----- Original Message -----
> From: "J.Gordon Beattie, Jr., W2TTT" <w2ttt at att.net>
> To: "'Carl'" <km1h at jeremy.mv.com>; "'N8WWM EN81'" <fiftymegs at juno.com>;
> <50mhz at mailman.qth.net>
> Sent: Tuesday, August 24, 2010 1:13 AM
> Subject: Re: [50mhz] Yagis: an economical solution that doesn't involve
> alotof work.
>
>
>> Carl,
>> Not exactly...I was proposing a simple coax core and aluminum tube type
>> of
>> gamma match, not what CC did on HF...I'm thinking this is a decent
>> compromise between the bogus ceramic gamma match and the T match.
>>
>> Thanks & 73,
>> Gordon Beattie, W2TTT
>> 201.314.6964
>>
>>
>> -----Original Message-----
>> From: Carl [mailto:km1h at jeremy.mv.com]
>> Sent: Tuesday, August 24, 2010 1:19 AM
>> To: J.Gordon Beattie, Jr., W2TTT; 'N8WWM EN81'; 50mhz at mailman.qth.net
>> Subject: Re: [50mhz] Yagis: an economical solution that doesn't involve
>> alot
>> of work.
>>
>> Which is what CC did on their HF monobanders for decades. Personally I
>> prefer an all metal T Match for 6M, no loss, better balance, higher input
>> impedance, better bandwith with efficiency. CC used a T on the 6M Boomer.
>>
>> Carl
>> KM1H
>>
>>
>> ----- Original Message -----
>> From: "J.Gordon Beattie, Jr., W2TTT" <w2ttt at att.net>
>> To: "'N8WWM EN81'" <fiftymegs at juno.com>; <50mhz at mailman.qth.net>
>> Sent: Monday, August 23, 2010 8:23 PM
>> Subject: Re: [50mhz] Yagis: an economical solution that doesn't involve
>> alot
>>
>> of work.
>>
>>
>>> Doug,
>>> Yes, and while you are at it, change the gamma match to be one made of a
>>> coax cable core inside of an aluminum tube as is done with the Directive
>>> Systems 50-4 yagi. I found that the ceramic cap embedded in the feed is
>>> lossy.
>>>
>>> Thanks & 73,
>>> Gordon Beattie, W2TTT
>>> 201.314.6964
>>>
>>>
>>> -----Original Message-----
>>> From: 50mhz-bounces at mailman.qth.net
>>> [mailto:50mhz-bounces at mailman.qth.net]
>>> On Behalf Of N8WWM EN81
>>> Sent: Tuesday, August 24, 2010 12:10 AM
>>> To: 50mhz at mailman.qth.net
>>> Subject: [50mhz] Yagis: an economical solution that doesn't involve a
>>> lot
>>> ofwork.
>>>
>>> Gang,
>>>
>>> Being a cheap SOB, I'd take that Cuscraft 5 element, clean it up real
>>> good,
>>> and get the tubing to make the boom as long as a 6M5X. You could
>>> Use the M2 spacings and save a bunch of money to give the XYL for a "mad
>>> money" shopping trip.
>>>
>>> Getting a better antenna at low cost AND pleasing the wife isn't a bad
>>> proposition at all.
>>>
>>> 73 Doug
>>>
>>>
>>>
>>>
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