Hi Steve,
Poor performing ground systems affect directive receiving antenna
performance in three fundamental ways:
- degrading the feed point VSWR
- by degrading feed efficiency which can upset the performance
of phasing networks in a phased array.
- allowing intrusion of feed line external
Hi Steve;
Even though I am about 80km from the nearest MW transmitter, BCB IM is a
constant issue here. Considerably worse in the winter. I am always VERY
suspicious that any crankup towers would be a significant contributor to
the creation of IMD products, both because of the sliding sections a
When we at Hi-Z see deterioration it is often the output cable running to the
receiver where the typical aluminum shield no longer makes great contact. Also
if it's one of the Hi-Z Antennas amplifiers make sure you are seeing 4 to 5
Volts DC at the element or amplifier input. Foliage touching an
Steve - when I see an increase in Intermod, my mind goes away from poor
grounds, and towards oxidized connectors and flaky relay contacts.
Reseat all connectors, tighten all screws, and hot-switch relay contacts till
you find the offender.
Tim N3QE
Sent from my iPhone
> On Dec 7, 2016, at 4:3
I’m wondering what experiences are out there regarding small vertical array, or
beverage performance in the winter over frozen ground.
The reason for this question is that over the last 2 weeks or so, my HI-z (24’
vertical) SDR skimmer antenna at my remote QTH has shown somewhat diminished
per
I'm an old ham but relatively new to top band. Last night from here was
amazing. I heard lots of EUs and managed to work S58N for my first EU on top
band. It's super tough from AZ to get by you guys in the midwest and east
coast, even on higher bands, with modest equipment. (Inverted-vee, 45
A few weeks ago someone called it "the midnight effect". (local time)
It is closer to sunrise in Europe for some, but
quite some time before sunrise for others.
Have fun !
73
Bruce-K1FZ
On Wed, 7 Dec 2016 14:55:29 -0500, Art Snapper wrote:
Conditions to EU were better than I
Superb conditions to EU from IL last night as well. Definitely the best
top band conditions I've experienced.
Matt NQ6N
On Wed, Dec 7, 2016 at 1:56 PM Art Snapper wrote:
> Conditions to EU were better than I have seen so far this season I was only
>
> on from 0430-0500z, but even that was imp
Conditions to EU were better than I have seen so far this season I was only
on from 0430-0500z, but even that was impressive.
Tom 4O/KC0W was very loud. In fact, he was louder than he is at our sunset
peak.
73
Art NK8X
On Wed, Dec 7, 2016 at 2:46 PM, wrote:
> Greetings Topbanders. . .
>
> I g
Greetings Topbanders. . .
I got on the air on TB late last evening about 11:00 p.m. Central Standard Time
and had a pleasant surprise. I had been QRV 160 earlier in the evening and
found conditions to EU to be poor (when I have trouble copying SV3RF, F5IN,
HA8RM, etc., things are bad). Howev
Hi, Ignacy,
I didn't see any response to your proposal.
There are several issues.
1) If the two antennas are using the same elevated radials, the radials
cannot possibly be effective on both bands without special engineering or
switching. Well-engineered ground radials do not have resonance effe
The Thrill of 160 Meters is inside this SUPER book - thanks to JEFF for
sharing his Topband knowledge!
DX Engineering started shipping the K1ZM book yesterday (Dec 6) worldwide.
https://www.dxengineering.com/parts/dxe-dxingbook
73,
Tim K3LR
_
Topband Reflector Archives - http://
Thanks everyone who answered. I see the problem.
I think what I, and probably SP7DQR, assumed is that since you tell the contest
people what section you're operating from on the application, the other stuff is
redundant. I'll fix it.
Wes
On 12/6/2016 4:00 PM, Wes Stewart wrote:
...
So w
Andy
Jeff here.
Pls let me know if you were able to get a book from Jay at ARRAY SOLUTIONS...
Apparently BB does not ship to all countries - one of them is Russia - I did
not know that - but I can help if needed.
After DEC 20th I will have a personal supply on hand and can even provide
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