[AMRadio] WTB - MURCH UT-2000A


david oneill w9nto at toast.net
Sat Jun 12 22:43:10 EDT 2010


if you hate it that bad take it out back and shoot it .

On 6/12/10, Donald Sanders <w4bws at yahoo.com> wrote:
> I am not famiiar with the BC 610 output circuit however it may be link
> coupled and 600 ohm or other high impedence as most of the transmitters in
> the late 30's and 40's. The Murch is designed to match an antenna to a 50 to
> 75 ohm load. Therefore you may be exceeding what the Murch is capable of
> doing.
> Don
>
>
>
>
> ________________________________
> From: rbethman <rbethman at comcast.net>
> To: Discussion of AM Radio in the Amateur Service <amradio at mailman.qth.net>
> Sent: Sat, June 12, 2010 5:22:36 PM
> Subject: Re: [AMRadio] WTB - MURCH UT-2000A
>
> I don't care if Marconi himself designed it.
>
> It will NOT tune a BC-610 to ANY antenna!
>
> Even after setting the BC-610 to the 400W ME-165G 50 ohm dummy load
> first.  It would melt the final before it managed to "match" anything.
> 250THs don't grow on trees!
>
> I have the manual.  I have checked it against the schematic in the manual.
>
> I'd take one of the Heath tuners, the high power ones, ANY day over the
> Murch!
>
> I don't know how long others have been at this, but that has been my
> experience since 1980!  There is equipment, then there is purported
> "ultimate" that is nothing but junk.
>
> Bob - N0DGN
>
> On 6/12/2010 6:12 PM, Robert Nickels wrote:
>> The Murch UT-2000A is a commercial version of the classic "Ultimate
>> Transmatch" designed by Lew McCoy and featured in the July 1970 issue of
>> QST and numerous ARRL handbooks.    It's called "ultimate" because it is
>> able to match coaxial-fed antennas, end-fed wires, and with the addition
>> of a 4:1 balun, balanced feeders.  The manual is on BAMA and I can send
>> you a copy of the QST article if you need it.
>>
>> Add a good SWR/power meter and once you learn how to tune it,  the Murch
>> will match most anything you can hook to it, 160-10 meters, up to a KW.
>>
>> 73, Bob W9RAN
>
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