the 60 meter
> band, regardless of what band I am actually operating.
>
>
>
> 73,
>
> Ken, KJ9B
>
>
>
> From: Ray
> Sent: Tuesday, August 29, 2023 3:06 PM
> To: ken.k...@gmail.com; Elecraft@mailman.qth.net
> Subject: RE: [Elecraft] Inter
On 8/29/2023 11:58 AM, ken.k...@gmail.com wrote:
The designer of the switch says that each band data channel only draws
around 4 mA, with each channel buffered by a transistor switch in an attempt
to isolate the band data voltage from the radio. In my working days in the
entertainment industry,
Download (or look at) the schematic for the switch/controller.
It has 3.3V zener diodes across each of the BCD inputs. The
K3/K3S has pull-up resistors to *5 V* on each of the BCD
outputs.
The switch is not allowing the inputs to the KPA500 to reach
the 5V necessary to resister as "High" thus
Ken,
Check the voltage/current ratings on the band data lines for both the
amp and your antenna switch.
It sounds like they may not be compatible. 60 meters is encoded as
"", so if the voltage is not high enough (perhaps due to
insufficient current), it will show 60 meters.
73,
Don
...@gmail.com; Elecraft@mailman.qth.net
Subject: RE: [Elecraft] Interesting observations after installing antenna switch
The 60 meter band is 100 Watts ERP Legal Limit !
The RAAS4a is Trying to keep you out of Trouble…
Ray WA6VAB K3
From: ken.k...@gmail.com <mailto:ken.k...@gmail.com>
There are links at the bottom of EVERY message leading to the QTH
Mailman page, where you can enter you email address and click
'unsubscribe'.
On 2023-08-29 15:08, Steven Ayers wrote:
How do you unsubscribe
__
Elecraft
How do you unsubscribe
On Tue, Aug 29, 2023, 13:59 wrote:
> Hi all. I recently put a remote antenna switch in my HF system. This
> switch (a WA4MCM kit, RAAS-4a) is capable of reading band data from several
> radios, including my Elecraft K3S. For several years I have had a KPA-500
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list:
Hi all. I recently put a remote antenna switch in my HF system. This
switch (a WA4MCM kit, RAAS-4a) is capable of reading band data from several
radios, including my Elecraft K3S. For several years I have had a KPA-500
amplifier in line, working seamlessly with my K3S, band switching
9 matches
Mail list logo
