Dive into the Digital Radio Universe with ARRL's VHF Digital Handbook
ARRL has released a new book on digital operations, ARRL's VHF Digital Handbook
by QST Editor Steve Ford, WB8IMY. Today's Amateur Radio operators are using
digital radio applications for fun, technical achievement and publi
Hi Skip,
Appreciate your comments.
The Lindenblad is indeed a favorite omni-directional antenna for satellite
enthusiasts since it maintains nearly circular polarization
for all azimuth and elevation angles of wave arrival. It does, however, favor
lower elevation angles for gain. The Lindenbla
Hi Ted,
That's a good thought, but the problem is that achieving more than a 16 to 25
mile range without a repeater requires more gain (on at least one end - usually
the home station end) than you can get from a lindenblad antenna, a big wheel,
a ground plane, or even a 5/8 wavelength vertical.
How about the best of both worlds (or at least an approximation thereof).
I would suggest for two meter home station applications that a lindenblad
antenna is a versatile
compromise omni-directional antenna that works equally well with both
vertical and horizontal polarizations.
The complexity of
For a 20 Mile path to the server I use 28 MHz ground wave, works with 5 Watts
pskmail day and night.
That is with PSK 250. The server has a horizontal dipole on the roof of a 65
meters high building.
When I am at our contest location in Germany, 100 Miles away, I use 80 meters
NVIS with 80 Watt
Thanks for the comments, Ralph,
Most of us OT's have known about the cross polarization for decades. But
it really does hit home when you try it out for yourself. I had never
had both horizontal and vertical antennas available to me at one time as
I only had horizontal back in 1964 when I was f
-- Forwarded message --
From: Rick Ellison <[EMAIL PROTECTED]>
Date: Tue, Feb 26, 2008 at 8:13 AM
Subject: [N1MM-Digital] Upcoming Digital Changes
To: [EMAIL PROTECTED]
To keep everyone on the same page Here is the list of changes and or fixes
that I will be sending to Tom
I was Googling around and found this item
"CQ CQ de k3uk k3uk CQ CQ yi de k3uk k3uk CQ CQ de k3uk k3uk C-+ QQ
While I was out was able to copy this on 40 meters and a whole bunch of
other stuff not legible.
Fred
VE3FAL "
Seems that someone actually decoded my MT63 signal,
--
Andy K3UK
www.
Not a ham radio related topic but I thought I would share this, I am
sure some hams used this.
Final goodbye for early web icon
By Jonathan Fildes
Science and technology reporter, BBC News
Netscape's demise
A web browser that gave many people their first experience of the web
is about
<< Возврат
"OPEN UKRAINE RTTY CHAMPIONSHIP'2008"
RULES
1. Date: 01-02.March.2008.
The CONTEST consist of 2(two) parts: LOW BAND (1,8 &
3,5 MHz) and HIGH BAND (7, 14, 21 & 28
DARC 10-m-DIGITAL-Contest (Corona)
Teilnahmebedingungen
Der DARC führt folgende RTTY-Wettbewerbe auf dem 10-m-Band in den vom
IARU-Bandplan
zugelassenen Frequenzbereichen durch::
Termine: erstes komplette Wochenende
in den Monaten März, Juli, September, No
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