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

Radio K0HB via CW cw at mailman.qth.net
Mon Oct 13 11:38:51 EDT 2014 

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, null <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"™
> --
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> --
> From: Steve WD8DAS via CW 
> 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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