K3 Power

[Thom LaCosta]

The K3 FaQ states

What are the power supply requirements?

The K3 DC voltage required is 13.8 V nominal/recommended; 11 V recommended
minimum; transmit disabled below 10 V; system shutdown below 9.0 V.

How many amps?
Is there a suggested supply?

If the rig is supplied with power pole connections, can one purchase the mating
cable that would be used to connect the rig to the power supply?

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[wayne burdick]

On May 2, 2007, at 6:49 PM, Thom LaCosta wrote:

> The K3 FaQ states
>
> What are the power supply requirements?
>
> The K3 DC voltage required is 13.8 V nominal/recommended; 11 V
> recommended minimum; transmit disabled below 10 V; system shutdown
> below 9.0 V.
>
> How many amps?

Estimates:

About 0.9 A receive (minimum, not counting enabled options), 3 A @ 10W,
20 A @ 100W. We'll refine these after further testing.


> Is there a suggested supply?

Not yet, but I'd use a 4-6 amp supply for 10 W and 20-25A for 100 W. To
minimize noise, use a linear supply or a switcher. If you have control
over the voltage, set it to 13 to 13.8 V.


>
> If the rig is supplied with power pole connections, can one purchase
> the mating cable that would be used to connect the rig to the power
> supply?

The rig comes with a mating cable that has properly installed APP
connectors at one end. Note that APP (Anderson Power Pole) connectors
are quite rugged, and we've never seen a failure in any of our products
that use them.

73,
Wayne
N6KR


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[wayne burdick]

> Not yet, but I'd use a 4-6 amp supply for 10 W and 20-25A for 100 W.
> To minimize noise, use a linear supply or a

*quiet* (low RFI)

> switcher.

Wayne


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[Fred N. van Kempen]

I use a 60-amp switcher from Diamond (GSV-6000) for driving
both the K2/100 *plus* the HLA-300 amp (45A) without any
issues.  The supply is clean.

One note: most smallish generators (think 'field day' !) do
hate this power supply.  I have seen 3KVA diesel units go
into a panic mode when the GSV was turned on.  Dunno what
that is about- my own (diesel) generator seems OK with the
very same supply.

--f
 

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of wayne burdick
Sent: donderdag 3 mei 2007 4:50
To: wayne burdick
Cc: [hidden email]
Subject: [Elecraft] Re: K3 Power (clarification: *quiet* switcher!)

> Not yet, but I'd use a 4-6 amp supply for 10 W and 20-25A for 100 W.
> To minimize noise, use a linear supply or a

*quiet* (low RFI)

> switcher.

Wayne


---

http://www.elecraft.com

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[richardhooper]

hi, you are right that most smallish generators do hate the power supplies so, if you have any queries about the Generators Chennai, Diesel Generators Chennai, just go on.