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  Home Help Search  
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Pages: [1] 2 3 Next
1  eHam Forums / Antennas and Towers and more / hexbeam or quad on: October 11, 2012, 08:47:12 AM
I'm about to turn 65 yrs of age and that means climbing towers, cranking towers etc for antenna maintenance is over.
I probably have 1 good antenna replacement session left in me, so the steppir 3 element that needs work has got to go.
I'm not much for dxcc awards etc, just casual qso.  reliability is paramount. hexbeam, quad or Huh?
2  eHam Forums / Computers And Software / RE: digipan help on: October 01, 2012, 09:58:59 AM
tnx  for the tip.  problem solved.  wound up pulling out the usb-serial
cable and process died.  go figure:-)
3  eHam Forums / Computers And Software / digipan help on: October 01, 2012, 07:50:08 AM
i am attempting to use digipan on a alienware m17 running win7 pro.
the problem is when i click the 'x' to exit the program, everything appears
to terminate normally.  however, when i attempt to start digipan again,
it can not open the com port, so i ctr alt delete, look at the processes
running and digipan *32 is still there. right click, select terminate
process does not end the process, the only way to clear digipan from
the process table is to reboot:-(  my user account has administrator
privileges.

any ideas??

tnx

larry
kd5foy
4  eHam Forums / Elmers / RE: Palstar AT-AUTO Smart Mode Setup on: May 18, 2010, 12:12:56 PM


try http://groups.yahoo.com/group/palstar_atauto/
5  eHam Forums / Lost Hams / Anyone know N0IDX Ken? on: December 28, 2009, 12:54:03 PM
I knew him many years ago.  His call sign is now expired
and I'd bet money he is know silnet key.

Any help appreciated.

larry
kd5foy
6  eHam Forums / Antennas and Towers and more / velocity factor antenna?? on: February 13, 2007, 07:06:54 AM

guys

tnx. sage advise and apprecitated.

larry
kd5foy
7  eHam Forums / Antennas and Towers and more / velocity factor antenna?? on: February 11, 2007, 05:59:57 PM
given that the length of a half wave dipole is
calculated by 468 / freq in mhz when velocity factor
is 1, ie 468 / 1.9  is about 246 ft.

i'm sitting here wondering why folks with small
city lots don't use (468 / freq in mhz) * velocity factor,
to construct a much shorter antnenna, particularly on 80m & 160m?

as an example, rg59 coax typically has a velocity
factor of .66, so plugging to the formula,
468 / 1.9  is about 246 ft, * .66 is about 162 ft.

why couldn't 162 ft of rg59 be cut in two, attached
to a 50 ohm, have the remaining ends of the rg59 shorted
together, and hoisted into the air?

so what am i missing? there are no free lunches:-)

larry
kd5foy
8  eHam Forums / Antennas and Towers and more / Rotor Doc's RL-1100 good, bad??? on: December 15, 2006, 11:40:49 AM

anyone have any experiences with a rotor RL-1100 by c.a.t.s(the-rotor-doc)? looks interesting but i can't find any reviews.

larry
kd5foy
9  eHam Forums / Antennas and Towers and more / Antenna Question on: November 28, 2006, 04:19:36 PM
hi there

i've got a dipole that is 200 ft end to end and fed
with 450 window line.  i attached a palstar zm30 via
its vendor supplied 4:1 balanced transformer and then
scanned the antenna from 1 - 10 mhz.  i do not see a
"V" trace at (468/200 is about 2.3 mhz) where i think
the antenna should be resonant. it my thinking off or what?

larry
kd5foy

10  eHam Forums / Antennas and Towers and more / balanced tuner help on: October 17, 2006, 05:23:49 AM
K8AC

Wow!!! very, very impressive indeed. many tnx
for the url.

larry
kd5foy
11  eHam Forums / Antennas and Towers and more / balanced tuner help on: October 16, 2006, 04:33:01 AM
brad, tnx for a very helpful post!!!!

larry
kd5foy
12  eHam Forums / Antennas and Towers and more / balanced tuner help on: October 15, 2006, 03:21:03 PM
don't know if this is the right forum but what the heck.
i have always wanted to build a step motor driven
balanced tuner.
i have acquired an excellent tx air capacitor and 2 matched
28 uh roller inductors.  next step is to acquire 2 step motors with
some kind of positioning indicator, either optical or a pot.

anyone have any recommendations for a company site, or for
anything else related, pulleys, belts, encoders etc

larry
kd5foy
13  eHam Forums / Elmers / ok to call cq & asking for a specific language on: June 03, 2006, 03:27:11 PM
Is it ok to call cq and request that the answering station answer in only specific language? i don't
see any problems, your thoughts please.

larry
kd5foy
14  eHam Forums / Elmers / Dust Cover for Alpha 99 on: February 19, 2006, 06:57:16 PM
http://www.radiocovers.com
15  eHam Forums / Antennas and Towers and more / Crank Up Tower ReCabling on: August 22, 2005, 05:35:13 PM
many thanks for the quick info.  i have no info on
how long steel cable should last.  i'll ask the question
again in 15 years:-)

tnx again

larry
kd5foy
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