[SMCARA] What to expect from a G5RV....

[Tom Clarke]

Dave,
That is looking good!   160 is asking a lot from that antenna anyway, so 
no worries there. Write off 15 and hang a separate 15 meter dipole and 
have fun!

73 tom/W4OKW
On 9/22/2014 6:33 PM, Dave Q wrote:
> Gentlemen,
> Thanks for all the info and help.  I got the antenna up with the help of a
> friend.  We had to remove tree branches and cut several trees down to get a
> clear path.
>
> Center is at 45' with ends at 23' and 15'.  Due to the slope of my property
> the wire angles are different enough to be noticeable.  The lower side of
> the slope has a more acute angle.  When the leaves fall I may be able to
> measure the angles somehow.
>
> I have a RigExpert AA-170.  I took a measurement from the coax at the radio
> which consists of 25' of RG-8 and 70' of LMR 400.  Don't have the radio in
> its final place thus the RG-8 jumper.  Already had the coax to antenna
> sealed so didn't take a reading with just the antenna.
>
> I took a 300 point sample from 0 Mz to 170 Mz.  I'm going to try to attach
> the graph but don't know if the forum will allow.  The graph has lightened
> areas for the different bands but they are not labeled.  In the software
> you can cursor over the graph and it shows the frequency and SWR and a
> bunch of other stuff which I have yet to learn.  I cursored over the middle
> of each lightened area and recorded frequency and SWR.
>
> Freq       SWR
> 1.700    12.98
> 3.400      2.73
> 7.367      1.44
> 10.200    9.10
> 14.167    1.45
> 18.133    1.30
> 20.967    5.26
> 24.933    1.08
> 28.900    1.55
> 50.433    2.34
> 145.067  2.92
>
> Does it receive or transmit, haven't turned the radio on yet.  It may be
> all noise.
>
> I'm going to attach a couple of pictures of the install.  Only thing of
> interest, at least to me, are the stand-offs and homemade window weights.
> Again not sure if the forum allows attachments.
>
> 73
> Dave - W3DLQ
>
> On Mon, Sep 22, 2014 at 4:38 PM, Jason Rearick <jbr13 at md.metrocast.net>
> wrote:
>
>> Boz, I ran the antenna analyzer on mine this past weekend.  This isn’t
>> with calibrated equipment, just an MFJ analyzer.
>>
>> The configuration of my ZS6BKW is inverted vee, center up at 35 feet, and
>> ends up at 8 feet.  I have 5 feet of the ladder line that touches the
>> ground, it comes down and makes a 90 deg bend at the ground.  The
>> ladderline attaches to 75 feet of LMR400 coax.  With my MFJ-949E tuner I
>> can tune 80M and 15M and have worked DX stations on all bands.   I can
>> operate on 40M, 20M, and 12M without a tuner and be under 2:1.(I usually
>> tuner just to get it as low SWR as possible.
>>
>>
>>        BAND
>>       RES. FREQ
>>       NOTES
>>
>>
>>
>>
>>
>>        80M
>>       3.503
>>       5.6 SWR at 50 ohm
>>
>>        40M
>>       7.080
>>       1.0 SWR at 50 ohm
>>
>>        20M
>>       14.079
>>       1.0 at 50 ohm
>>
>>        17M
>>       17.945
>>       1.5 SWR at 50 ohm
>>
>>        15M
>>       21.180
>>       10.8 SWR at 50 ohms
>>
>>        12M
>>       24.850
>>       1.2 SWR at 45 ohm
>>
>>        10M
>>       28.800
>>       1.8 SWR at 60 ohm
>>
>>
>>
>>
>>
>>
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>>
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>>
>>
>> From: Richard (KG3BOZ)
>> Sent: Monday, September 22, 2014 3:49 PM
>> To: jbr13 at md.metrocast.net ; smcara at mailman.qth.net ; William S Merritt
>> Subject: Re: [SMCARA] What to expect from a G5RV....
>>
>> Thanks.
>>
>> I did read about this 'optimized' G5RV.  I'd be interested to see some
>> actual antenna measurements (with calibrated test equipment).  I'm not sure
>> I am ready to believe all of the claims on the website.
>>
>> Having said that, what really counts is whether the user enjoys the
>> antenna performance. Everything else is academic.
>>
>>
>> 73 DE KG3BOZ
>>
>>
>>
>> -------- Original message --------
>> From: jbr13 at md.metrocast.net
>> Date:09/22/2014 15:33 (GMT-05:00)
>> To: smcara at mailman.qth.net, William S Merritt
>> Subject: Re: [SMCARA] What to expect from a G5RV....
>>
>>
>>
>>    BODY { font-family:Arial, Helvetica, sans-serif;font-size:12px; }
>> Just so everyone knows, Dave is not working with a regular G5RV.  He
>> is using what is called a ZS6BKW G5RV, or an Optimized G5RV.  Slightly
>> different antenna, that was optimized by computer modeling off the
>> original G5RV.
>>
>> You can see what it looks like at the bottom of this page, and under
>> the regular G5RV.  http://www.w8amz.com/W8AMZ_G5RV_Page.html [1]
>>
>> The ZS6BKW as I was optimized to be better than the original G5RV
>> antenna, and is capable of operating on 10, 12, 17, 20 & 40m bands
>> generally without a tuner, with SWR readings usually 1.5:1 or less.
>> Using a tuner 6, 15, 30 & 80m bands with much higher efficiency then
>> the original G5RV.
>>
>> I researched this antenna a good amount before I purchased it, and
>> this is a .pdf that details a comparison between the G5RV and the
>> ZS6BKW.
>>
>> www.w5ddl.org/files/ZS6BKW_vs_G5RV_20100221b.pdf [2]
>>
>> Just wanted to through this out here so everyone was on the same
>> page antenna wise.
>> Jason N3YUG
>> On Mon 09/22/14 1:19 PM , William S Merritt merrittws at earthlink.net
>> sent:
>>    Tom Rausch, W8JI, a noted engineer and designer of ham products
>> discusses the G5RV...
>> http://www.w8ji.com/g5rv_facts.htm [3]
>> In particular he comments:
>> "...The G5RV has a _reasonable SWR_ on 80, 40, 20, 15, and 12
>> meters./It
>> is not an acceptable performer on 30, 17, or 10 meters/.'
>> and:
>> "While the G5RV requires an antenna tuner, it is very efficient on
>> at
>> least 5 bands."
>> --
>> Bill Merritt
>> KB4QAA/3
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>>
>>
>> Links:
>> ------
>> [1] http://www.w8amz.com/W8AMZ_G5RV_Page.html
>> [2] http://www.w5ddl.org/files/Zs6bkw_vs_G5rv_20100221b.pdf
>> [3]