[CVCC] Fw: [PVRC] Last Call for Green Heron Orders with the PVRC Discount

Fri May 4 12:35:30 EDT 2007

----- Original Message ----- 
From: <K4VV at aol.com>
To: <PVRC at mailman.qth.net>
Sent: Friday, May 04, 2007 12:31 PM
Subject: [PVRC] Last Call for Green Heron Orders with the PVRC Discount

Last Call for Green Heron Orders with the PVRC Discount

This is an updated version of our opportunity.

The 15% discount of Green Heron Engineering controller purchase
opportunity has been publicized on the reflector and in the March
Newsletter.  Twenty-two units have been ordered so far.  Our final
order will be submitted in 2 days--on May 6.

An upgraded version of the controllers which adds a USB port (in addition to
the Serial port) is available in about June for the
standard rotators for +$5 if we order now.  (A $10 increase is anticipated
when the USB version is introduced at Dayton.)

If you are interested, please read this message carefully, and get more
detail on the Green Heron website listed below.

To order, please email me with your order including the controller you want
(with or without power supply), the specific rotator to be controlled (with
model number), payment method (note the $5 discount for check or money 
order),
and confirm that your mailing and email addresses are correct (as I will use
that info in the order).

Our discounts are better than the ones at Dayton next month, because we are
doing a lot of the admin work to consolidate the orders

Jack Hammett.

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--------------------------------------------------------------
The PVRC Green Heron Engineering Purchase for Rotator Controllers

Frank Donovan and I have discussed a group discount purchase from Green 
Heron
Engineering.

These systems are especially interesting because of the capability to
1) control all the common commercial rotators adding digital accuracy and
convenience if at all possible (and be configured for others), 2) be linked 
to
move individual antennas together as a stack, 3) "point and shoot" azimuth
pointing, 4) ramp up and down rotation, 5) can be configured with a 
fail-safe for
TIC RIngRotors, Pro-sis-tel, Alfa-Spid etc. that have no mechanical limit
switches to prevent motor runaway, 6) Use the latest Power MOSFET
components that are nearly indestructible, 7) Are field software upgradeable
for special applications if desired, and 8) They look great and are only 4"
high with a large bright LCD display (Optional Vacuum Fluorescent Display 
for
the ultimate look)

A software solution is also in testing to enable control of these devices on
a network using a software utility in the individual PCs at each position in 
a
M1 or M2 station (or control from a remote location).

Many of you know Jeff Ach, W2FU, a serious and accomplished contester and 
the
founder of Green Heron Engineering.  I met Jeff last spring at Dayton when 
he
gave me a good rundown on his controllers.  The time has come for me to
order.  Frank and I together will order 12 units, and Jeff has agreed to 
offer a
PVRC discount of 15% off the Amateur Radio Net pricing for his standard 
products.

If you are interested in joining this discount order, please email me with
your interest. For more info on the products available, look on the web site
(greenheronengineering), and download the manual for details, or contact 
Jeff at
[info at greenheronengineering dot com] or (585) 217-9093.

Here is more info from Jeff about his offer to PVRC:
------------------------------------------------------------------------------

We would be happy to offer a group discount program to the PVRC. 15% on 10 
or
more is fine and as long as each buyer pays his own shipping, we can just
ship direct.  UPS ground to the DC area is only about $11 or so, and we have 
a 2
pack box that makes a pair about $16 to ship down there.

We have been working on some software that allows multiple stations access 
to
the same controller depending on the band.  This is an ideal solution for 
M/S
and M/2 applications where you don't want to keep reaching to other 
locations
to turn the antennas.

The standard unit (universal) runs all the standard commercial rotators.
This includes AC and DC motors up to about 40+ volts and 5A.  For Prop Pitch 
(10A
or more) or for 1/3 or larger AC motors (or 90 VDC motors) we have other
solutions of which there are many options, some of which have limitations. 
The
cheapest solution is to use external relays to control the motor CW and
CCW directions BUT when you do this without going to additional external
hardware, we lose the ability to speed control and ramp up/down.  More
sophisticated methods (we manufacture a remote drive system that works great 
with 90 VDC
motors of up to a couple of HP) allow retention of the PWM speed control.

I use a system like this here on my rotating tower, a 1/3 HP 90 VDC motor 
run
directly from a rectified AC line at the base of the tower.  We control the
motor with 2 relays and a MOSFET power control board.  The cable to the 
tower
is all small #22 wire, 6 conductor as I use a mag switch at the rear of the
motor for heading indication.  It would be 7 wires if we used a 
potentiometer.
The MOSFET driver runs the motor, the ramp up/down is so good, that the tips 
of
my 40 meter beams don't even wiggle when the antenna starts and stops, yet 
we
turn 360 degrees in about 45 seconds!  We get 1/10 degree resolution and
accuracy with this system.

All of the solutions retain the same operator interface, box and display, 
but
we have various remote power control methods.  And, if you don't mind giving
up the 'universality' of the standard controller, we do make a model that 
has
no rotor power supply inside at all and can save a bit more as we eliminate
the 5A transformer and power control from the inside box.

RT-20 $549.00
RT-20 (w/o internal rotor motor supply) $499
RT-20pp Prop Pitch (Internal 28VDC 10A supply) with balanced mag spinner kit
(K7NV Systems)   $659
RT-20D Deluxe (Black front panel, VFD display)
adds $150 to any version.

Remote MOSFET driver board for integration into a remote power systems $129,
requires customer to add relays and appropriate voltage source based on his
need.  (DC Motors only, must specify < 48 VDC or > 48 VDC motors)

The PVRC discount only applies to the above standard products.

We can do complete custom packages integrating this technology if needed.

------------------------------------------------------------------------------
-------------------------------
Jeff also told me that if we purchase about 20 units, he may be willing to
deliver the controllers to the DC area (saving the shipping cost), and to 
meet
with those interested in a discussion of the setup, applications, and a demo 
of
the remote control software.  His opportunity to deliver and visit would
depend on the timing of our order completion and other commitments.  Many of 
us
will see him at Dayton.

I will consolidate your orders and collect your checks or credit card info 
to
consolidate and forward to Jeff.  A $5 additional discount will apply for
cash equivalent (check or money order).  After our final orders are 
submitted
soon, Jeff will work towards our deliveries (which may take some weeks,
considering his work at the HamVention and the effort to deliver the new USB 
Port units.

Responding to our request, Jeff agreed to extend the period of the PVRC
ordering through May 6.  The cash and carry prices at Dayton will be higher 
than
our costs per unit.

Jeff will need to know the rotator with which you will use each controller,
so that he can preconfigure each unit.  This will save  time when you 
receive
the units.

More shipping rate info for RT-20 (standard or D) follows:
1 shipped to residence = $13
2 shipped to same residence = $17

1 shipped to commercial address = $10
2 shipped to commercial address = $14

For follow-up, contact k4vv at aol.com

************************************** See what's free at 
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