[CW] A report for those who are considering 475 kHz

D.J.J. Ring, Jr. via CW cw at mailman.qth.net
Mon Oct 13 12:33:00 EDT 2014 

Experimental License - Part 5 FCC.

For emissions and frequencies not able to be licensed otherwise.

So a bunch of hams asked for frequencies near 500 kc/s to be used for
digital modes and CW.

That fits Part 5 of FCC rules.

DR

On Mon, Oct 13, 2014 at 11:38 AM, Radio K0HB via CW <cw at mailman.qth.net>
wrote:

> OK.  Just sounds odd to me.  To me the word "experimental" means things
> like "new", "unproven", " never been done before".
>
> 73, de Hans, K0HB "Just a Boy and his Radio" 7⃣3⃣
>
>
> On Sun, Oct 12, 2014 at 9:32 PM, wealsowalk at aol.com <wealsowalk at aol.com>
> wrote:
>
>> There are several reasons why 600 meters can be experimental Hans.  One
>> obvious one is that for those of use who have not done commercial or marine
>> radio there is a very big learning curve to getting onto the band.  You
>> know, not all of us have worked at KPH or gone into Italy during a war to
>> set up a 500khz station.  Also many of the experimenters are developing
>> antennas, computer modes, and radio parts being proven on the band.  You
>> will see similar things going on, possibly in more depth, at 137 KHz and at
>> 22Khz or so.
>> Bill Isakson
>> AC6QV  --  WD2XSH/44
>>
>>
>> -----Original Message-----
>> From: Radio K0HB via CW <cw at mailman.qth.net>
>> To: sbjohnston <sbjohnston at aol.com>; vk2acl <vk2acl at gmail.com>; wa1tjb <
>> wa1tjb at yahoo.com>; cw <cw at mailman.qth.net>
>> Sent: Sun, Oct 12, 2014 3:01 pm
>> Subject: Re: [CW] A report for those who are considering 475 kHz
>>
>>   Not sure why the 600-meter vicinity is suddenly thought to be
>> "experimental".  Mariners like myself and Dave Ring used it for normal
>> communications for decades, and other Sailors before us back to the dawn of
>> the radio age.
>>
>> Just sayin’
>>
>> 73, de Hans, K0HB
>> --
>> "Just a boy and his radio"™
>> --
>> Proud Member of:
>> . A1 Operators - http://www.arrl.org/a-1-op
>> . Minnesota Wireless contesters - http://www.W0AA.org
>> . Arizona Outlaws contesters - http://www.arizonaoutlaws.net
>> . Twin City DX Assn - http://www.tcdxa.org
>> . Minnesota Amateur Radio Technical Society - http://www.mn-arts.org/
>> . Lake Vermilion DX Assn - http://www.lvdxa.org
>> . Royal Navy Amateur Radio Society – http://www.rnars.org.uk
>> . SOC - http://www.qsl.net/soc
>> . CW Operators Club – http://www.cwops.org
>> . SKCC - http://www.skccgroup.com/
>> --
>>   *From:* Steve WD8DAS via CW <cw at mailman.qth.net>
>>  *Sent:* Sunday, October 12, 2014 9:33 PM
>>  *To:* vk2acl at gmail.com ; wa1tjb at yahoo.com ; cw at mailman.qth.net
>>  *Subject:* Re: [CW] A report for those who are considering 475 kHz
>>    Gary, there are quite a few websites where the experimental stations
>> describe their setups.  Try a search for "630m experimental" or "600m
>> experimental" to turn them up.
>>
>> The WSPR mode is described at
>>
>> http://en.wikipedia.org/wiki/WSPR_%28amateur_radio_software%29
>> http://physics.princeton.edu/pulsar/k1jt/wspr.html
>> http://wsprnet.org/drupal/
>>
>> The WSPR software is a free download, and the website where the reports
>> are organized and displayed is free to use.  No cost at all.  It is used on
>> all bands, not just 630 meters.
>>
>> Matt, sorry for my USA-centric posting - you are correct that lots of
>> countries have authorized 630 meters as a ham band.  It puzzles me why the
>> goverment here hasn't done so yet.
>>
>> I received an email asking about my receive antenna...  My best choices
>> are my 75-meter inverted vee dipole (with the transceiver preamp turned
>> on), or my ground mounted 8' whip with a preamp at the base (preamp off in
>> the receiver).  I've been very dilligent about keeping noise sources in my
>> house to a minimum, but neighbors and powerlines do cause noises at times.
>> I made a 10-foot shielded loop active antenna out of coax inside PVC pipe
>> but it is stored in the garage right now - too unwieldy and has to be
>> turned to peak signals or null noise.
>>
>> I also had a question about the ground system for my inverted-L antenna.  The
>> ground side of the antenna is just my regular station ground.  The central
>> ground point is along a section of wall where the all the utility service
>> entrances are located. This central ground is a few feet of 1/2" copper
>> pipe with 1" copper straps connecting to the power entrance ground, an 8'
>> rod driven right outside the house, the iron and copper water pipes (before
>> and after water meter), and the metal HVAC ductwork in my house.    To this
>> ground system I have connected to this (with more 1" copper strap) the
>> operating desk star ground, my two Gates BC-1T transmitters, the 630m
>> transmitters, and the shields of all my various antenna feedlines.
>>
>> I made no special ground for the 630 meter antenna system - just made
>> sure its ground side was well-attached to my existing station ground.  The
>> outside of the various coaxial cable shields form accidental counterpoises
>> and radials I'm sure.
>>
>>
>> Steve WD8DAS
>>
>> sbjohnston at aol.com
>> http://www.wd8das.net/
>> --------------------------------------------------------------------
>> Radio is your best entertainment value.
>> --------------------------------------------------------------------
>>
>>
>>
>>
>>
>> -----Original Message-----
>> From: Matt VK2ACL <vk2acl at gmail.com>
>> To: Gary Smith <wa1tjb at yahoo.com>; CW Reflector <cw at mailman.qth.net>
>> Cc: sbjohnston <sbjohnston at aol.com>
>> Sent: Sun, Oct 12, 2014 2:06 pm
>> Subject: Re: [CW] A report for those who are considering 475 kHz
>>
>>  There is a yahoo group on this topic, which includes a lot of activity
>> in VK and ZL (where 630m is already a ham band):
>> https://groups.yahoo.com/neo/groups/600m/info
>>
>> 73,
>> Matt VK2ACL
>>
>> On 13 Oct 2014, at 5:55 am, Gary Smith via CW <cw at mailman.qth.net> wrote:
>>
>>   Hi Steve,
>>
>> Do you have some websites where we can learn more, and any other data
>> relative to equipment to build/modify and antennas to use?
>>
>> Sounds fascinating!!
>>
>> Gary
>> WA1TJB
>>
>>
>>   On Sunday, October 12, 2014 1:29 PM, Steve WD8DAS via CW <
>> cw at mailman.qth.net> wrote:
>>
>>
>>  Here's a report for those who are considering getting active on 475
>> kHz. 630m isn't a ham band yet but there is already ham-style activity...
>>
>> Last night I had a lot of fun on 630 meters.  Quite a few
>> experimental-licensed stations were transmitting in the WSPR mode, and even
>> more non-licensed stations were receiving and reporting.
>>
>> Here's a map showing everyone my station heard, or was heard by, on the
>> WSPR mode...
>>
>>      http://www.wd8das.net/WSPR-WH2XHY.jpg
>>
>> Here's a map showing everyone that was active on 630m WSPR last night...
>>
>>      http://www.wd8das.net/WSPRactivity.jpg
>>
>> Notice the reports from Europe, Alaska, and Hawaii.  Very cool!
>>
>> WSPR's S/N reporting is useful to know when propagation is good enough to
>> support normal contacts.  When the S/N ratios are higher then it is time to
>> go to CW... where I made two CW contacts with Pennsylvania and Texas
>> experimental stations.  Conditions seem to be getting better as we move
>> into winter.
>>
>> Details on my 630m station...
>>
>>      http://www.wd8das.net/630m.html
>>
>>
>> Steve WD8DAS / WH2XHY
>>
>> sbjohnston at aol.com
>> http://www.wd8das.net/
>> --------------------------------------------------------------------
>> Radio is your best entertainment value.
>> --------------------------------------------------------------------
>>
>>
>>
>>
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