[Elecraft] Relocating my KPA-1500 - need cable

Thu Jun 2 20:03:55 EDT 2022

I'm not familiar with CAN-bus. How can I easily implement this in my setup? End result is I want two way CAT control -- amp gets band/frequency data from the radio, KPA-1500 remote app gets SWR and power from the amp to display on the PC and control the power switch and standby/operate from the remote app.

 - pjd

-----Original Message-----
From: jerry <jerry at tr2.com> 
Sent: Thursday, June 2, 2022 3:20 PM
To: lists at w2irt.net
Cc: 'Jack Brindle' <jackbrindle at me.com>; 'Elecraft Reflector Reflector' <elecraft at mailman.qth.net>
Subject: Re: [Elecraft] Relocating my KPA-1500 - need cable

On 2022-06-02 11:23, lists at w2irt.net wrote:
> I hadn't considered that! Is there a preferred way of doing this over 
> longer distances? I'm sure I'm not the only person who's needed to 
> remote the amp.
> 
>  - pjd

As a homebrew project, if you want "robust" and "just works", it's hard to beat CAN-bus.  A quick Google confirms that for a baud rate of 250K, it will work up to
820 feet.

              - Jerry KF6VB

> 
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> <elecraft-bounces at mailman.qth.net> On Behalf Of Jack Brindle via 
> Elecraft
> Sent: Thursday, June 2, 2022 12:30 PM
> To: Elecraft Reflector Reflector <elecraft at mailman.qth.net>
> Subject: Re: [Elecraft] Relocating my KPA-1500 - need cable
> 
> Using a network connection would be a very good idea. Auxbus is not 
> meant to go 20 feet, and indeed will probably fail at that distance.
> Thus using an alternate method to get frequency info to the amplifier 
> would be a good idea.
> 
> 73,
> Jack, W6FB
> 
> 
>> On Jun 2, 2022, at 10:34 AM, David Decoons <rocketnj at gmail.com> wrote:
>> 
>> Hi Peter,
>> 
>> Contact Bob, N6TV. He can make good quality DB 15 cables that are 
>> shielded.
>> 
>> Let me know when you are ready and I can help. Also you can do it as 
>> we discussed on the phone via the network, running a CAT 6 cable.
>> 
>> Call me if you have questions.
>> 
>> 73
>> Dave wo2x
>> 
>> Sent from my iPad
>> 
>>> On Jun 2, 2022, at 11:12 AM, lists at w2irt.net 
>>> <mailto:lists at w2irt.net>
>>> wrote:
>>> 
>>> I need to move my KPA-1500 into the basement, and I've got an 
>>> electrician coming to put in the new outlet next week. But the only 
>>> tricky issue now is finding the correct cable to run to the amp from 
>>> my Y-Box to provide frequency/band data, etc. I will need a cable 
>>> run of about 20 feet, which will need to run behind the wall, down 
>>> into a crawlspace, then through a concrete wall to the new rack.
>>> 
>>> With sub-optimal eyesight and shaky hands, I'm not sure I'd by much 
>>> good making one, but if they're not available easily in the 
>>> aftermarket I guess I can give it a shot. Does anybody know where to 
>>> find a pre-made ~20ish foot long cable, or if not, (a) what pinouts 
>>> do I need, (b) where to source the correct cable to do this 
>>> properly, and (c) what connectors-I'm guessing DB15M and DB15F?
>>> 
>>> 
>>> ----------------------------------------------------
>>> 
>>> Regards,
>>> Peter Dougherty, W2IRT
>>> 
>>> DXCC Card Checker/CQ-WAZ Checkpoint
>>> 
>>> www.facebook.com/W2IRT
>>> 
>>> 
>>> 
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