[AMRadio] 10M AM Frequencies

[Bernie Doran]

   Unless you are using very low loss cable or a very short run, the 
apparent SWR is pretty meaningless.   SWR is simply a ratio of energy going 
out and energy reflected, if the losses are high the SWR will look fair to 
good.  Do not believe it? use something like an MFJ antenna anaylizer and 
check your beam way outside the band, say at 40 mc or so, if you are not 
showing five to one or more, your coax is lossy.  I use this same technique 
to check my 700 foot run to the 80 meter vert, set the anylizer for 7 mc and 
read swr.    I usually show about six to one and that is with cable that has 
a less than one DB loss for the 700 feet @ 80 meters.   Bernie





----- Original Message ----- 
From: "Adrian Flynn" <adrianjamesflynn at gmail.com>
To: "Discussion of AM Radio in the Amateur Service" 
<amradio at mailman.qth.net>
Sent: Friday, September 23, 2011 1:28 PM
Subject: Re: [AMRadio] 10M AM Frequencies


> OH!
> Just because it has been around for years that makes it the "LAW OF THE
> LAND"?
> I don't think so, it my be useful but it is time for "CHANGE" or are you
> deaf?
> Adrian KF7DYU
>
> On Fri, Sep 23, 2011 at 1:19 PM, <manualman at juno.com> wrote:
>
>> It's been around for years and years. To view, go here:
>> http://www.arrl.org/band-plan-1
>>
>> Pete, wa2cwa
>>
>> On Fri, 23 Sep 2011 10:21:10 -0400 "David Knepper"
>> <collinsradio at comcast.net> writes:
>> > Is there a ARRL bandplan in effect?
>> >
>> > If not, then, I would suggest that AM operation be above 29 Mhz.
>> >
>> >
>> > David Knepper, W3CRA/W3ST
>> > Collins Radio Associaton - Join Today
>> > www.collinsra.com
>> >
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