and it does quite
well against the broadside beverage arrays, especially useful for
diversity reception.
73 - Eric NO3M
On 02/03/13 13:14, donov...@starpower.net wrote:
As you noticed after writing your 0013Z email, I'm using three 75 ohm Magic-T
combiners as suggested by W1MK. The
From: Lee
and
back to scanning in the other.
73 - Eric NO3M
On 2/5/2013 17:42, Tom W8JI wrote:
Out of curiosity... with so many narrow-pattern receive antenna
configs, how do typical contest stations check different directions
after a CQ? Frank, I still want to come visit your station during a
test and see
effect. At times, there may be up to three
receiver channels present, which can sound pretty weird if never heard
before:
Run Radio: Left / Right (diversity or split directions)
S/P Radio: Centered (binaural)
73 es GL SP
Eric NO3M
_
Topband Reflector Archives - http
Since there seems to be too much concern over this, though no ill intent
was intended, audio will not be broadcast.
GL / 73 Eric NO3M
On 12/28/2013 06:23 AM, Stan Stockton wrote:
Eric,
You made it clear what you were doing, and I am quite sure Clive understood. I
think the logic behind his
it is top loaded). 1.2:1 bandwidth was originally a
mere 5 kHz. With the additional swamping resitance and step-down, it is
now at least around 20 kHz.
73 Eric NO3M
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Topband Reflector Archives - http://www.contesting.com/_topband
OWL using #14 THHN and 1/2 in. irrigation drip tube. If drilled with
the right sized hole, the spacers pinch the wire enough to stay in place
w/o any additional hardware:
http://no3m.net/index.php?page=open-wire-transmission-line
73 Eric NO3M
On 04/30/2014 11:16 AM, Rik van Riel wrote
and safe Field Day.
73 Eric NO3M (WG2XJM) - evening CW shift from W3MIE, Meadville, PA
http://no3m.net/index.php?page=600m
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Topband Reflector Archives - http://www.contesting.com/_topband
-33 is the lowest I've personally decoded, been decoded, and have seen
between others. Currently running WSPR4 in Linux with a Microham MK2R+
(built in USB soundcard).
73 Eric NO3M / WG2XJM
On 09/03/2014 01:41 PM, Jim Brown wrote:
On Wed,9/3/2014 2:39 AM, Mike Waters wrote:
Yesterday I
Not sure what happened on your end, but I had you in the log, Jim. Sure,
it was a struggle, but got your call and exchange fine after plenty of
repeats. Guess we'll try again this morning!
Back to it.
73 Eric NO3M
On 12/06/2014 02:36 PM, Jim Brown wrote:
On Sat,12/6/2014 11:25 AM
ver 22,000 ft radials. I also plan to fire up a homebrew 1930s style MOPA:
http://no3m.net/vintage/630m-mopa/
Full announcement from the ARRL 500-kHz Experiment Coordinator, W1FR, is
produced below.
73 / GLDX
Eric NO3M / WG2XJM
October 26, 2015
Greetings:
Below is the announceme
ing that I
heard any of the VE7s.
Recording of VE7SL after our QSO:
http://no3m.net/uploads/VE7SL-NO3M-2015-11-15-0527z.mp3
Recording of VE7SL last year:
http://no3m.net/uploads/VE7SL-NO3M-2014-11-01-0435z.mp3
Maybe another activity night can be planned for January or February.
73 Eric NO3
is a
transverter band in the K3, so you'll get direct freq readout. Someday
I'll get the new synth boards and bypass the transverter
73 Eric NO3M
On 11/15/2015 01:25 PM, Dennis wrote:
Can someone point me to a schematic for a transverter that can run
with a K3?
I'd like to build something
available RX antenna in the
same direction as the one being requested to be tracked, work him, then
click the "Track" button again on my controller and the original
opposite receive antenna selection is restored.
73 Eric NO3M
On 12/28/2015 11:47 AM, Art Snapper wrote:
Do any of you w
This past morning, loudest I've ever heard Jim's QRP on 160 that I can
recall. Easy ragchew level.
73 Eric NO3M
On 01/30/2016 01:29 PM, Jim Brown wrote:
On Sat,1/30/2016 9:40 AM, David Raymond wrote:
Condx to JA from here in Iowa this morning were quite good
Yes, it was a good night. Dave
Hand keying with an old bug oscillator HV supply also rectified with
a Slop Jar bank (ie. electrolytic rectifiers).
Will get a late start; couple hour drive from home yet.
73 Eric NO3M
On 2016.03.12 15:59, Art Snapper wrote:
So is that MOPA interfaced to N1MM+ for keying
I should be QRV this evening with my 1928 MOPA running about 19W input /
11W output. Already worked some EU stations with it (Four Square TX),
so hoping to catch some west of Rockies guys tonight.
http://no3m.net/vintage/160m-1928-mopa/
Not quite QRP
73 Eric NO3M
of
the cycle. Cpngrats on working CT!
So far worked maybe a couple dozen or more west of the Rockies, KV4FZ,
NP2X, KH6ZM, and GW3YDX with the '28 MOPA; hand still in good shape
despite many CQs on the bug.
73 Eric NO3M
On 03/13/2016 01:32 AM, Jim Brown wrote:
On Sat,3/12/2016 9:17 PM, Jim F. via
Manual.pdf
It is a fairly simple filter to build and works very well. I don't
remember the actual specs of the ones I built off-hand. I use them in
my signal conditioners (white cores):
http://no3m.net/wp-content/uploads/2015/08/100_3729.jpg
73 Eric NO3M
On 03/03/2016 11:46 AM, Roger White wrote:
Sorry, that article is for the TX BPFs
W3NQN receive BPFs are in the July/Aug 1999 issue of QEX.
On 03/03/2016 01:54 PM, Eric NO3M wrote:
Ed published a two (2) part article in May / June 1998 QST that
discusses the design background (available in ARRL QST archives
are on smaller cores than those cited in the article
and likely those Jay sells, so windings were modified accordingly using
W3NQN's design guidelines (and some correspondence). Nonetheless, they
work excellent.
73 Eric NO3M
On 03/03/2016 01:24 PM, Jim Brown wrote:
On Thu,3/3/2016 10:12 AM
Signal peaks on SW beverage (245 deg) and 8-circle array aimed SW (245
deg) here in WPA (EN91wr). Slightly more signal on the west than south
directions, so extrapolate slightly more west than 245 deg.
73 Eric NO3M
On 12/06/2016 09:05 AM, Don Kirk wrote:
Thanks Russ,
With your heading, we
on the LF bands in the future.
73 Eric NO3M / WG2XJM
_
Topband Reflector Archives - http://www.contesting.com/_topband
/
http://500kc.com/
http://njdtechnologies.net/category/630-meters/
GL CU 630M
73 Eric NO3M
On 11/02/2017 01:34 PM, Kevin Adam wrote:
What does it take to get on 600 meters radio antenna transceiver power
requirements
N9IWW
_
Topband Reflector Archives - http://www.contesting.com
Anyone heading to Frostfest and Dayton? Looking for someone that might
be able to haul one or two small 36 in. racks. Pickup Frostfest,
drop-off Dayton.
Please contact off-list.
Thanks.
73 Eric NO3M
_
Topband Reflector Archives - http://www.contesting.com/_topband
dramatically.
Any recommendations on a suitable and decently priced cable to do the
job, supplier? Perhaps parallel runs of 18/2 or 16/2, 18/4 or 16/4, or
a good deal for CAT5 with pure copper?
Thanks
73 Eric NO3M
_
Topband Reflector Archives - http://www.contesting.com
decide to place
them. All elements are combined in-phase.
ON4UN's book has some info on this regarding a 4-el broadside vertical
array (Ch. 7, Fig. 7-29), which is fed 1:2:2:1.
73 Eric NO3M
On 9/11/18 11:27 AM, Herbert Schoenbohm wrote:
I use DXE 9:1 beverage transformers and DXE 470 ohm
Frank
If you really want a 3-port splitter, see here:
http://no3m.net/wp-content/uploads/2018/12/splitter-3.png
Two more common alternatives using 2-port splitters:
http://no3m.net/wp-content/uploads/2018/12/splitters.png
73 Eric NO3M
On 12/24/18 8:00 AM, Frank VO1HP wrote:
Does anyone
Corrected the autotransformer turns/tap on the 2-way splitter examples...
http://no3m.net/wp-content/uploads/2018/12/splitters.png
On 12/24/18 1:57 PM, Eric NO3M wrote:
Frank
If you really want a 3-port splitter, see here:
http://no3m.net/wp-content/uploads/2018/12/splitter-3.png
Two more
Looking for a 25kV SPDT vac relay. Please contact in private Email w/
what you have and price.
73 Eric NO3M
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Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
- Eric NO3M
On 10/9/20 5:44 PM, Jim Brown wrote:
I'd love to see Topbanders using JT9, which provides another 4 dB of
noise rejection. JT9 dominates on 630M for that reason.
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
A clean transmitter also helps the situation as well as a minimal (or
none) electronics in the receive path prior to the receiver, ie. passive
elements in a vertical receive array or beverages. If a preamp must be
used, high dynamic range / IP3
- Eric NO3M
On 8/20/20 3:27 PM, donov
Hi Jim, hope all is well and settling down out there.
I think the performance was favorable on 160m... we only did limited
testing, but I did work VK4YB using several different T/R periods
(30,60,120). One thing I seem to recall is that the doppler spreading
was greater on 160m vs. the lower
rea, every dB counts to ensure the weakest signals are not lost and
unrecoverable I regularly hear VK4YB on that band (including some
good runs this summer), sometimes the only station in NA despite being
in the "east".
GL in your quest for RDF!
- Eric NO3M
On 10/19/20 4:56
Photo 100_0974.jpg in your dropbox is that a younger W1BB sitting in
front of a RME-69 receiver with mic in hand?
On 4/2/21 12:34 PM, Augie "Gus" Hansen wrote:
David J Ring Jr of the Radio-Officers Facebook page shares some
stories of Stew Perry who was also a Radio officer as well as
350ft works well here (quiet rural QTH):
http://no3m.net/2020/09/2200m-double-loop-receive-antenna/
The one I use is aimed west and hears VK4YB (and recently VK2AN) on
2200m most mornings starting a couple of hours prior to sunrise (and at
times has gone an hour or more past sunrise).
- Eric
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