[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Phil Kane
Sent: Saturday, April 15, 2017 3:25 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA500 mobile?
On 4/15/2017 7:43 AM, Phil Hystad wrote:
> Unfortunately, I can’t remember anything of the details of how this
> wa
The very best station on Sirius/XM really destroys the beautiful melodious
sounds and overtones coming from the banjo. It gives it a watery metal
sound. However that does not stop me from listening to it. It is really all
about the content. That's why I can enjoy bluegrass on my iphone or XM
Touche! :)
__
Clay Autery, KY5G
MONTAC Enterprises
(318) 518-1389
On 4/15/2017 7:24 PM, Bob Nielsen wrote:
> Waveguide below cutoff.
>
> On 4/15/17 10:54 AM, Clay Autery wrote:
>> The ultimate directional, high-pass filter...
>>
>> __
>> Clay Autery,
Waveguide below cutoff.
On 4/15/17 10:54 AM, Clay Autery wrote:
The ultimate directional, high-pass filter...
__
Clay Autery, KY5G
MONTAC Enterprises
(318) 518-1389
On 4/15/2017 10:14 AM, Jim Stahl via Elecraft wrote:
OTOH, this can be a feature of tunnels, not a bug.
On 4/15/2017 8:45 AM, Phil Hystad wrote:
> And, cellular service will be ultimately in all of the tunnels under
> Seattle and already exists in the oldest downtown tunnel as described
> here:
"All it takes is money" (my favorite phrase)
Now if they were to fund ham-band repeaters - that
On 4/15/2017 7:43 AM, Phil Hystad wrote:
> Unfortunately, I can’t remember anything of the details of how this
> was done but I suspect wide-band amplifiers and wires and top-side
> wide-band antennas.
Leaky coax (trade name == Radiax). It's many-decades-old technology.
73 de K2ASP - Phil Kane
The ultimate directional, high-pass filter...
__
Clay Autery, KY5G
MONTAC Enterprises
(318) 518-1389
On 4/15/2017 10:14 AM, Jim Stahl via Elecraft wrote:
> OTOH, this can be a feature of tunnels, not a bug. Several years ago I was
> riding on the “BikePike”, an abandoned
Hate to hear that... Wife loves it. (2014 Fusion). I'm mostly happy
with it, too. Though I prefer to just play what I want from my phone
(high bit-rate mp3). Of course, neither of us are audiophiles, and I
flew helicopters...
__
Clay Autery, KY5G
MONTAC Enterprises
(318)
I found one link that describes basically this service for AM/FM radio
reception in the I-90 tunnels. It is section 7.3 (right near the end) of this
link:
http://www.wsdot.wa.gov/sites/default/files/2012/06/26/I-90TunnelSystem.pdf
And, cellular service will be ultimately in all of the tunnels
OTOH, this can be a feature of tunnels, not a bug. Several years ago I was
riding on the “BikePike”, an abandoned section of the PA Turnpike east of
Breezewood that has become a bicycle route featuring two old tunnels. Although
closed off to motor vehicle traffic, we noticed a pickup parked
A number of tunnels are “wired” for broadband radio reception. A bit of years
ago when they were building the I-90 stretch between Bellevue and Seattle there
are two major “tunnels” on each side of the I-90 floating bridge (across Lake
Washington). The tunnel on Mercer Island is actually not
Shameless Promotion but interesting story:
Two years ago in the Florida QSO Party, our local "Mad Scientist" and mobile
operations God Chris, NX4N, decided to do something that had never been done
before:
A Multi Multi mobile entry!
In his Chevy Suburban, we had four radios: A K3 in the front
On Fri,4/14/2017 9:06 PM, Matt Zilmer wrote:
I used Sirius in the early 2000s, and used to experience regular
dropouts of 4 seconds in several locations on my commuteto/from work.
Each of these areas was under a highway or freeway.
I occasionally car pool to ham events with a neighbor in his
Sirius (at least) has terrestrial transmitters that are used to full sat
voids, like tunnels or parts of the San Francisco or NY financial
districts, or tall mountains near an interstate highway. The smaller
blockages are probably deemed a minor inconvenience, especially if
they're out inthe
Semi-related curiosity regarding shielding. My wife's car has Sirius/XM
radio. It usually loses contact with the satellite driving under
Interstate bridges and the like. Likewise in the garage. OTOH, at our
previous home there was a tunnel through a small hill, perhaps 1/4 mi
long. The XM
g wrote:
>>>> Yaesu FT-891 w/
>>>> HLA 305V @ approx. 200 W.
>>>> http://www.rmitaly.com/index.php/en/news/92-news/19487-arrl-review-rm-italy-hla-305v-plus
>>>>
>>>> Vy 73 de Bert
>>>> WA2SI
>>>>
>>>>
t;
>>
>>> On 4/14/2017 16:45 PM, Bert Craig wrote:
>>> Yaesu FT-891 w/
>>> HLA 305V @ approx. 200 W.
>>> http://www.rmitaly.com/index.php/en/news/92-news/19487-arrl-review-rm-italy-hla-305v-plus
>>>
>>> Vy 73 de Bert
>>> WA
I suspect that the dwell time would be small enough for most folks you
crossed paths with that you'd probably be safe (need to do the math anyway).
For cars going the same direction as you, you as the control operator,
have to make sure you don't irradiate anyone else around you beyond the
I am reminded of when I (actually my employer and you taxpayers) bought a
shielded room to enclose "my" RF laboratory. This was modular, 16' x 20' x 10'
and composed of 2" thick particle board, clad on both sides with tin-plated
sheet steel. Because I needed to be able to move a rack mounted
On 4/14/2017 1:13 PM, KENT TRIMBLE wrote:
> The assumption has always been that the driver and passengers are riding
> inside a Faraday Cage and therefore are safe from RF radiated by an HF
> antenna, regardless of where located and regardless of power level.
When I take my 2011 Ford Focus
Hi Jim . . .
That was my point, although without mentioning the paint.
I should have said "worth RE-considering."
Kent
On 4/14/2017 3:33 PM, Jim Brown wrote:
On Fri,4/14/2017 1:13 PM, KENT TRIMBLE wrote:
The assumption has always been that the driver and passengers are
riding inside a
On Fri,4/14/2017 1:13 PM, KENT TRIMBLE wrote:
The assumption has always been that the driver and passengers are
riding inside a Faraday Cage
There are HUGE holes in that assumption in the form of non-metallic
parts and paint preventing contact between metal parts. An enclosure
forms a
The assumption has always been that the driver and passengers are riding
inside a Faraday Cage and therefore are safe from RF radiated by an HF
antenna, regardless of where located and regardless of power level. The
truth of that assumption, coupled with how much shielding a vehicle
actually
Hi Mike
I am running the KPA-500 now on battery power. It isn't mobile, but
it could be with the same hardware. The method I use is a 115 volt AC
inverter that runs off a 12 volt battery. I use the Xantrex Prosine Pure
Sine Wave 1800 watt inverter.
A few days ago we talked about the RF exposure rules related to Amateur
Radio, and how we all had to sign that we complied with those rules when
we renew our tickets.
I wonder if the exposure to passing cars is below the limit with a
Hustler or similar antenna on the rear bumper?
Are we
>>> Vy 73 de Bert
>>> WA2SI
>>>
>>> Sent from my android device.
>>>
>>> -Original Message-
>>> From: Mike Smith VE9AA <ve...@nbnet.nb.ca>
>>> To: Elecraft@mailman.qth.net
>>> Sent: Fri, 14 Apr 2017 12:00
>>
VE9AA <ve...@nbnet.nb.ca>
To: Elecraft@mailman.qth.net
Sent: Fri, 14 Apr 2017 12:00
Subject: [Elecraft] KPA500 mobile?
Big fan of mobile ham radio here...Have always run 100w.
Would like to do more. (500w-1000w)
Has anyone here ever run a KPA500 mobile? (if so, how? Big inverters to
gene
And then there's the car's electronics. Some
modern ones don't react well to high power RF. I
had one which didn't like 100 W -- though backing
off to 50 W made all things OK.
Phil W7OX
On 4/14/17 10:27 AM, Ron D'Eau Claire wrote:
One issue with mobile QRO is the antenna. While a mobile
-italy-hla-305v-plus
Vy 73 de Bert
WA2SI
Sent from my android device.
-Original Message-
From: Mike Smith VE9AA <ve...@nbnet.nb.ca>
To: Elecraft@mailman.qth.net
Sent: Fri, 14 Apr 2017 12:00
Subject: [Elecraft] KPA500 mobile?
Big fan of mobile ham radio here...Have always run 100w.
Woul
From: Ron D'Eau Claire <r...@cobi.biz>
To: 'Mike Smith VE9AA' <ve...@nbnet.nb.ca>
Cc: Elecraft@mailman.qth.net
Sent: Friday, April 14, 2017 11:28 AM
Subject: Re: [Elecraft] KPA500 mobile?
One issue with mobile QRO is the antenna. While a mobile whip/loading coi
Not me personally but my Elmer, the late W7UVR, back in the AM days ran a
high-level modulated 4-1000A.
I've got his QSLs around here someplace, but in the meantime someone else has
posted them too: http://hamgallery.com/qsl/country/USA/Washington/w7uvr.htm
He later converted to SSB,
One issue with mobile QRO is the antenna. While a mobile whip/loading coil
combo can be designed for high power, it becomes difficult to prevent corona
discharge from the end of the whip while transmitting at high power.
One fairly common solution decades ago was to mount a copper toilet tank
George Wallner, AA7JV, is a superb engineer and has done a half dozen
DXpeditions to islands around the world. For one of his most recent, he
used SGC amps so that he could run on batteries that were recharged by a
small generator running in Economy mode, greatly reducing the quantity
of fuel
Years ago I looked into the idea of running 500 watts mobile and my amp of
interest
was the SGC SG-500 SmartPowerCube amplifier. Since the SGC company was just
a 20 minute drive from my home I decided to go there and see if I could find
someone
technical to talk to. I did talk with one of the
ri, 14 Apr 2017 12:00
Subject: [Elecraft] KPA500 mobile?
Big fan of mobile ham radio here...Have always run 100w.
Would like to do more. (500w-1000w)
Has anyone here ever run a KPA500 mobile? (if so, how? Big inverters to
generate 15a @ 115ac?)
Related question...if you haven't run a KPA500
Big fan of mobile ham radio here...Have always run 100w.
Would like to do more. (500w-1000w)
Has anyone here ever run a KPA500 mobile? (if so, how? Big inverters to
generate 15a @ 115ac?)
Related question...if you haven't run a KPA500 mobile, what amp HAVE you run
mobile?
Thanks
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