Tips and Tricks

Kind of a blog from Ron W7HD   Tucson, AZ
Shortcuts ---> Ground loops Backup camera Sansa FM transmitter CD Labels Flagpole antenna 5 watt Linux server Yaesu VX6R Bass boat, SheevaPlug
The Challenge The Solution added/updated
Audio Ground Loops
  • Radio Shack carries a nice Ground Loop Isolator
  • Part# 270-054 and it's less than $20.
  • Very useful to eliminate those pesky ground loops in
      the receiver audio.
  •       Radio Shack website info
    13-Dec-2008
    Updated
    01-Jan-2009
    Travel Trailer backup camera
    (Will also work on an RV
    and is MUCH cheaper
    than what the RV places sell)

    Plus it makes a nice
    home security monitor.

    Or how about a great
    camera for your ham TV!
  • Purchase a pair of Swann NightHawk wireless cameras Swann website
      These are very small and can be mounted just about anywhere.
      (I paid $150 at Fry's Electronics Website info - they were $200 at Radio Shack)
      Also you may want to get a 12V battery and plug so you won't need
      to run any wires, but you will want an on/off switch!
      This needs a fair amount of power, so be sure the battery has
      adequate capacity for a 300ma draw at 12V. I plan on running the
      one on the trailer from the trailer 12V system and the one on the
      back of the truck from the truck 12V for permanent use. Both will
      have an on/off switch to activate them from inside.
  • Purchase a Curtis RT700 7" portable TV, (mine cost $45 at a hamfest)
      or other portable TV or DVD player which has an AV (audio/visual) input.
  • Now mount one of the cameras on the rear of your towing vehicle and
      point it down at the hitch so you see when backing up to the trailer.
  • Then mount the other on the rear of the travel trailer so you can see
      where the rear of the travel trailer is going when you're backing it in.
  • Now place the monitor in a suitable (and safe) position in your vehicle.
      and plug the wireless receiver into your monitor - video and sound!
  • You're ready to go and what could be easier!
  • A cautionary note: nearby Wi-Fi signals can interfere, so you may
      need to change the 2.4GHz channel frequency (an internal switch on the
      camera power plug), which is also where the mic is located.  

  • 13-Dec-2008

    Updated
    01-Jan-2009
      UPDATE: Have decided to try a quick-disconnect camera mount for the back of the truck.
          Didn't like the idea of leaving it out there for the less than honest folk.
    I bought a tripod with quick-disconnect camera mount for $12.99 at Radio Shack,
    kept the quick-disconnect part and mounted it on an angle bracket on the rear of
    the truck. It seems that buying just the quick-disconnect part is $19.95!
    Now, I need a better mounting method so I can still take the truck through the car wash.
    Got it! I mounted just the quick-disconnect beside the license plate frame.
    Works great, and it will survive a car wash trip! Put a deep-cycle battery
    in the truck bed with a connector for the camera - also works nicely. I just charge
    it once a month and am good to go. (It also provides power for the air compressor.)
    Figured out that if I put the monitor in the back window where I can see it in the
    rear-view mirror, it gives me a nice way to see without having to divert my attention.
    I'm next going to try a flip-mount so I can push it up out of the way for normal use.
    Updated
    03-Jan-2009








    Updated 19-Mar-2009
    Sansa player FM transmitter Ordered the Maximo SAN-360 FM transmitter for the Sansa E-280 from Amazon.com. ~$43
      Maximo Website
    Advantage: ONE 30-pin connection to the Sansa player and plug it into the cigarette-lighter plug
      - you're done! It has better range and less static in town (and no ground loop).
    NOTE: The Monster FM transmitter works okay with my Sansa View but NOT with her E-280
    (ground loop). That's why I ordered the SAN-360. It's all one unit so no chance of a ground loop.
    The XYL has tested it. She says it is GREAT - no more fading, no more static, AND
      no more tangled cords PLUS it charges the Sansa when it's plugged in :)
      I had tested the range by hooking it up to 12V and my SansaView, leaving the cords
      rolled up, and then taking my Grundig G5 with the antenna folded down. It worked
      fine out to about 30 feet that way.
    21-Dec-2008



    28-Dec-2008
    CD labeling
    The easy way
    The XYL got me a CD labeler for Christmas. (Casio CW-L300) Casio Info Website
    It's the kind that writes directly onto the CD. It also does regular labels.
    Cost at Fry's Electronics - $99.95 (msrp $199.99)
    It really works great and works either standalone or connected to the USB port of my PC.
    You can get various colors of tapes for it, too. They are a bit spendy (about $30/pair) but
    well worth it. The CDs come out looking great - almost professional :) Plus the tapes stick well.
    It does NOT work with Windows 7 Beta (no drivers) :)
    29-Dec-2008
    Updated
    01-Feb-2009
    Force-12 Flagpole Antenna
    Great for CC&R areas
    You can either build your own by covering a vertical (such as a Hustler 6BTV) in PVC pipe,
    Website here -OR- purchase the Force-12 Flagpole Antenna (FPA starting at $240). Website here
    See this article about flagpole antennas on eham.net.
    Yes - I have a Force-12 FPA on order! We wanted to put up a flag when my son
    gets deployed overseas this spring; this seemed ideal & the XYL (KC7HGX) agreed.
    They called to say it was shipping yesterday 06-Feb-2009 :) :) :)
    It has arrived and the concrete has been poured. Now to wait the 6 days for it to set.

    It is up and working very nicely! It has a lot less noise than I expected from a vertical antenna.
    And it does look and function as a nice flagpole. So if you're in a restricted neighborhood,
    you really want to consider this one! It makes a very nice complement to my 80M loop to get
    those alternate polarizations. At 15-1/2 feet in length, it is small enough to fit in almost any yard!
    10-Jan-2009





    15-Feb-2009

    Updated
    28-Feb-2009
    Yaesu VX6R Just got a new Yaesu VX6R submersible handheld. It's tiny! Lots of things to like in this
    tri-band (2M/220/440) 5W handheld. It has AM/FM/Shortwave/Air/Marine/Weather coverage, too.
    Wow! All that for less than $300 delivered, including Arizona tax.
    Got it so my XYL could talk to me while I'm out in my new bass boat fishing
    (6-1/2 ft pontoon style, 60 lbs, electric trolling motor) and I don't have to worry about getting it wet.
    Been there, done that one. That's what did in the old Icom T7H. It was HER suggestion, too!
    She also bought me the boat. Guess> I'm a just spoiled old man, hi hi. Well, we have been married
    for 45 years now, and I spoil her, too :)
    25-Apr-2009
    THE BASS BOAT
    Foam-filled PVC, 6-1/2 ft.
    60 lbs empty, 40-lb thrust
    electric trolling motor,
    swivel chair, anchor
    Well, the new bass boat has now been in the water up on Parker Canyon Lake.
    Even though it was VERY windy, the boat did great. Just couldn't keep a line in the water, so was
    only out for about 2 hours. Total outlay was $800 including shipping.
    I put 4 eye-bolts in the pickup sides (in the places provided), and then proceeded to put two lengths
    of 1/2" heavy-duty conduit through them, with a small bolt at either end to hold them in place. I also
    added some padding in the form of pipe insulation to protect the boat. It works great! The boat sits
    up there nicely over the bed of the pickup. Of course, I tied it down with heavy straps ... :)
    AND the VX6R worked nicely, although there wasn't much in the way of signal on the lake.
    ONE repeater in range, but just barely. Hmmm - guess I need to think about a better
    antenna for the boat. Even the Diamond rubber duck didn't really cut it.
    11-May-2009
    The 5-watt server Coming next - the $49 5-watt "wall wart" Linux server.
    More info to come. I've ordered the developers version ($99).
    Be green AND save money, too.
    Link to eweek review         Marvell web page for the SheevaPlug
    I have it and am learning how to program it. It does require another
    computer to connect to it for programming and debugging. But for a
    developer this is FUN!
    28-Feb-2009



    Updated
    25-Apr-2009
    SheevaPlug
    5-watt
    Web Server
    First brought online 25-May-2009.
    This is the $99 Marvell SheevaPlug that is now the new W7HD website. As you can see,
    it is very small, has an external 120GB USB hard drive for the files, with a
    1GB Ethernet connection, a 1.2GHz ARM CPU and 512MB ram. It will literally plug into
    a wall outlet (I have the external AC cord on this one).
    The POGOPLUG is an off-shoot of this that provides you with Network-Attached-Storage.
    You plug in a USB drive, connect the PogoPlug to the network and the drive is now available
    to all computers on the network! Also at $99 !
    01-Aug-2009
    This is a new page I started 13-Dec-2008. I plan on updating it frequently so check back often. Feel free to link to this page or use it in a newsletter.
    Shortcuts ---> Back to top Ground loops Backup camera Sansa FM transmitter CD Labels Flagpole antenna 5watt VX6R Bass boat, SheevaPlug
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