Folks - This topic was closed yesterday.
73,
Eric
mooderator
/elecraft.com/
On 8/22/2019 8:49 AM, Bob McGraw K4TAX wrote:
Yes and the most issues I encounter in assisting other hams is that they DO
NOT read the manuals. They take the approach "aw heck, I know how that
works". Well that is
Yes and the most issues I encounter in assisting other hams is that they
DO NOT read the manuals. They take the approach "aw heck, I know how
that works". Well that is just downright wrong. Look at the
questions asked and issues presented and just how many of those are or
can be answered
Yes, I've found it there Bill, but not when I'm in the boonies with no cell
reception. I always have one, usually more, computers with me.
73, Bill Mader, K8TE
W6H NM Coordinator, Route 66 On-the-Air 7-15 Sep 2019
Duke City Hamfest BoD www.dukecityhamfest.org 20-22 Sep 2019
President,
But it’s on the INTERNET!
Sent from my iPhone
...nr4c. bill
> On Aug 22, 2019, at 8:14 AM, K8TE wrote:
>
> The current version of the KAT500 manual is Rev C6 (3/8/17) and directs users
> to connect the power cable to "the station 11 to 15 VDC power supply". This
> is another reason why
The current version of the KAT500 manual is Rev C6 (3/8/17) and directs users
to connect the power cable to "the station 11 to 15 VDC power supply". This
is another reason why we should use the most current manuals and update them
with firmware changes. Elecraft is one of the few in this
On 8/21/2019 5:55 AM, hawley, charles j jr wrote:
While it’s important to use quality components with high power for safety, its
also important to use quality components especially to minimize losses with low
power.
Yep. Our QRP operation for FD uses big coax.
73, Jim K9YC
[End of Thread]
Looks like Carter has gotten a wealth of good info on coax type vs power and
feedline loss. :-)
Let's let the thread end for now in the interest of relieving list email
overload for other readers. In general, please take discussions off list or end
them when more than 5-10
Good point, Chuck,
I understand and concur completely.
73,
Carter, N3AO
Blacksburg, VA
On Wed, Aug 21, 2019 at 8:55 AM hawley, charles j jr
wrote:
> While it’s important to use quality components with high power for safety,
> its also important to use quality components especially to minimize
While it’s important to use quality components with high power for safety, its
also important to use quality components especially to minimize losses with low
power. Just sayin’
Chuck Jack Hawley
KE9UW
Sent from my iPhone, cjack
> On Aug 20, 2019, at 11:51 PM, Jack Brindle via Elecraft
>
That's not a universally true statement.
Several years ago I was trying to decide which antenna to buy, and my
choice came down to two antennas that were 2 db apart. I created some
audio files by recording typical band noise and then overlaying them
with recorded CW messages at various
Carter;
Welcome to the world of higher power. The information you have received from
others is very good. There is one other thing to watch for, it is something
that most hams who upgrade to higher power experience. When we operate at low
power, there are a lot of things we can get away with
On 8/20/2019 9:18 PM, Jim Danehy wrote:
ONE DB loss is the LEAST DETECTABLE amount a human can detect.
Not true. One dB IS approximately the smallest change in LOUDNESS that
most listeners can hear, but what matters in radio is signal to noise
ratio, and 1 dB can be the difference between
On 8/20/2019 6:58 PM, Mike Harris via Elecraft wrote:
It is a shame to see folks go cheap on the cable. My rule of thumb is
1dB or less between the rig and the antenna at the highest frequency
of operation.
RIGHT!
73, Jim K9YC
__
On 8/20/2019 3:49 PM, Nr4c wrote:
From what I have read on eHam Reviews, it appears that I can run the
amp/tuner combo on 117v. from the convenient wall socket. Is that correct,
as well?
The KPA500 runs on 120V or 240V. The KAT500 runs on 11-15VDC. My two
K3s (original model) run on a 100Ah
Losses in COAX is KEY DOWN CONDITIONS.
ONE DB loss is the LEAST DETECTABLE amount a human can detect. Hardly if not
impossible to notice.
Jim
W9VNE/VA3VNE
Sent from my iPhone
> On Aug 20, 2019, at 11:28 PM, Mark Goldberg wrote:
>
> Take a look at this coax loss calculator. It will tell
Take a look at this coax loss calculator. It will tell you how much loss
there is in the coax, including extra loss due to SWR. You will have to
determine how much loss you can tolerate.
https://www.qsl.net/co8tw/Coax_Calculator.htm
73,
Mark
W7MLG
On Tue, Aug 20, 2019, 12:19 PM Carter Craigie
It is a shame to see folks go cheap on the cable. My rule of thumb is
1dB or less between the rig and the antenna at the highest frequency of
operation.
Warm coax is lost rf which we have paid heavily to generate.
Regards,
Mike VP8NO
The 110 Volt AC will be fine and draw 9 amps key down — within a 15 amp
circuit breaker with plenty for more uses. If VSWR is ok then RG-8X is
fine. I have used LMR-240 as well but is intended for higher frequencies
up to UHF.
Have fun out there!
On Tue, Aug 20, 2019 at 17:50 Nr4c wrote:
>
RG-8X will be fine. LMR-240 is also a good choice, a little less loss.
Sent from my iPhone
...nr4c. bill
> On Aug 20, 2019, at 3:11 PM, Carter Craigie wrote:
>
> Hello friends,
>
> I am contemplating buying a KPA500 amplifier/tuner Combo, and driving it
> from my Elecraft K2/100 rig. I
-
From: elecraft-boun...@mailman.qth.net On
Behalf Of Bob McGraw K4TAX
Sent: Tuesday, August 20, 2019 21:11
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA500 Coax size requirements
Because in the manual, page 4, item 2 states "Connect to the station 11 to 15 VDC
power s
Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of Bob McGraw K4TAX
Sent: Tuesday, August 20, 2019 21:11
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA500 Coax size requirements
Because in the manual, page 4, item 2 states "Connect to the station 11 to 15
VDC
Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of Bob McGraw K4TAX
Sent: Tuesday, August 20, 2019 21:11
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA500 Coax size requirements
Because in the manual, page 4, item 2 states "Connect to the station 11 to 15
VDC
: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA500 Coax size requirements
Carter:
The KAT500 can be {should be} powered from the radio 12V supply. I
don't suggest a separate wall wart.
The KPA500 can be powered from either 120VAC or 240VAC, your choice. It
should drive on all bands with 20 t
: elecraft-boun...@mailman.qth.net On
Behalf Of hawley, charles j jr
Sent: Tuesday, August 20, 2019 20:45
To: Ken K6MR
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA500 Coax size requirements
I think the issue is to be sure the tuner powers up with or after the K3.
But, mine turns on first
qth.net on
> behalf of Bob McGraw K4TAX
> Sent: Tuesday, August 20, 2019 12:59:11 PM
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] KPA500 Coax size requirements
>
> Carter:
>
> The KAT500 can be {should be} powered from the radio 12V supply. I
> don't
] KPA500 Coax size requirements
Carter:
The KAT500 can be {should be} powered from the radio 12V supply. I
don't suggest a separate wall wart.
The KPA500 can be powered from either 120VAC or 240VAC, your choice. It
should drive on all bands with 20 to 30 watts output from the K2 to
reach full
Carter:
The KAT500 can be {should be} powered from the radio 12V supply. I
don't suggest a separate wall wart.
The KPA500 can be powered from either 120VAC or 240VAC, your choice. It
should drive on all bands with 20 to 30 watts output from the K2 to
reach full 500 watts output from the
Carter -
I run my KPA500 from the 120v outlet in my shack. I have done so for years
with no problems. I use LMR400 coax, but I know several folks who use RG8-X
with the KPA500, even on very long runs and some with amps putting out 1000
to 1500 watts. The better your antenna the less of a problem
Hello friends,
I am contemplating buying a KPA500 amplifier/tuner Combo, and driving it
from my Elecraft K2/100 rig. I hope I would be able to do that!
From what I have read on eHam Reviews, it appears that I can run the
amp/tuner combo on 117v. from the convenient wall socket. Is that correct,
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