[TowerTalk] Mosley Antenna Question
Joe Subich, W4TV
w4tv at subich.com
Tue Feb 17 18:06:31 EST 2015
I too have had Mosley antennas over the years (TA33 and TA36) and in
both cases I noticed a significant improvement in performance when I
replaced the TA33 with a Cushcraft A4 and the TA36 with a HyGain
TH7DXX (neither of which is a "high performance" tribander by modern
standards).
K7LXC will not "talk his book" but I will say that multiple unbiased
antenna range tests - including those reported in the K7LXC/N0AX
"Tribander Test Reports" - have shown that the Mosley antennas perform
more poorly than any other manufacturer's multiband yagis of similar
boom lengths. Some tests even showed certain Mosley antennas had
*loss* compared to a dipole at the same height above ground.
73,
... Joe, W4TV
On 2015-02-17 4:25 PM, Richard Solomon wrote:
> I had a similar setup (except mine was a PRO-57A) and had
> similar excellent results.
>
> Without specific data I can only conclude that some folks have
> had some bad experiences therefore all their antennas are "bad".
>
> Not from where I stand, and the proof is in the pudding, as they
> say.
>
> 73, Dick, W1KSZ
>
> On Tue, Feb 17, 2015 at 2:11 PM, David Blake via TowerTalk <
> towertalk at contesting.com> wrote:
>
>> I've had outstanding results with Mosley antennas, especially the PRO67B.
>> With my PRO which was up from 1994 until I moved in 2010 I never had a
>> problem or complaint. DX results were excellent. I worked over 320
>> countries all 6 bands the antenna is designed to cover. When it was taken
>> apart, all the stainless hardware, nuts and bolts were in good condition.
>> I used the Pentrox or whatever it's called that was supplied by Mosley on
>> all joining sections and they came apart easily. It withstood shear winds,
>> ice and snow in central Ohio. I sold it to a very famous DXer who had been
>> using a Mosley PRO57 for 20 years and wanted to upgrade. I ran an Amertron
>> AL-1200 which easily ran full legal power and achieved Honor Roll status on
>> both Phone and CW. I have issues with Mosley, but they are not related in
>> performance or ability to stand up year after year. You must purchase them
>> from Mosley, delivery can take months at times. Not sure if this is still
>> the case or not. Think they every charged my credit card before shipping.
>> I also had a 1961 TA33 which was upgraded to a TA33 with the 40KR kit and
>> taken down when I moved in 1987. Again I never had any problems. No
>> servos, thin plastic insulators, pop rivets or hose clamps.
>>
>>
>> 73Dave -N4DB-
>>
>>
>> On Tuesday, February 17, 2015 1:13 PM, K7LXC--- via TowerTalk <
>> towertalk at contesting.com> wrote:
>>
>>
>> > Over the years I have heard stories of unexplained failures with
>> Mosley
>> antennas which were equally unexplained as having to do with the selection
>> of certain coax cables. One recent incident was with a local here that had
>> trouble getting a PRO 67 to ?cooperate? only with the use of RG 213 cable.
>>
>> A Mosley PRO series? My condolences.
>>
>> My experience has been that the PRO Mosleys are very sensitive to
>> anything near them. This includes 2M verticals, etc. And you have to have
>> the
>> exact feed arrangement that they show. Both will cause problems.
>>
>> Test the antenna with an analyzer at the feedpoint and work your way
>> back to the shack from there.
>>
>> Cheers,
>> Steve K7LXC
>> TOWER TECH
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