[Elecraft] K3 Question on KXV3B

Ross Primrose n4rp at n4rp.com
Fri May 22 17:12:53 EDT 2015


I think you two might be talking across purposes.  I got the impression 
Tony meant the external 6 or 6/10m preamp....

73, Ross N4RP

On 5/22/2015 5:07 PM, Wayne Burdick wrote:
> On May 22, 2015, at 12:41 PM, "N2TK, Tony" <tony.kaz at verizon.net> wrote:
>
>> Does the preamp on the KXV3B replace the current preamp or is it in addition
>> to?
>> I assume it is in addition. How do you turn it on and off?
> Preamp 2, on the KXV3B, is in addition to the normal preamp (preamp 1). But firmware will only let you turn on one or the other -- not both. When preamp 2 is ON, it totally dominates the noise figure equation, so there's no value in also turning on preamp 1. Preamp 2 has a gain of 20 dB, while preamp 1 has a gain of 10 dB.
>
> To turn preamp 2 ON, you first have to enable it on one or more of the applicable bands using the CONFIG:PREAMP2 menu entry. You can enable it on 12, 10, and 6 meters.
>
> Once preamp 2 is enabled, tapping PRE cycles through OFF/PRE1/PRE2 on the applicable band. Other bands will only show OFF/PRE1.
>
> When PRE2 is selected, the PRE icon flashes slowly as a reminder.
>
> 73,
> Wayne
> N6KR
>
>
>
>> Tnx
>> N2TK, Tony
>>
>> -----Original Message-----
>> From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Eric
>> Swartz - WA6HHQ, Elecraft
>> Sent: Thursday, May 21, 2015 12:12 PM
>> To: Jim Lowman; elecraft at mailman.qth.net
>> Subject: Re: [Elecraft] K3 Question on KXV3B
>>
>> Correct.
>> 73,
>> Eric
>> /elecraft.com/
>>
>> On 5/21/2015 8:49 AM, Jim Lowman wrote:
>>> So, I assume that those of us who own the external preamp, don't need
>>> this new board?
>>>
>>> 73 de Jim - AD6CW
>>>
>>> On 5/21/2015 7:42 AM, Wayne Burdick wrote:
>>>> The addition of the low-noise amplifier for 12-6 meters is the only
>> change.
>>>> The module is compatible with either the K3 or K3S. The manual will
>>>> be posted when it's complete.
>>>>
>>>> 73,
>>>> Wayne
>>>> N6KR
>>>>
>>>> On May 21, 2015, at 7:22 AM, Bill Wiehe via Elecraft
>>>> <elecraft at mailman.qth.net> wrote:
>>>>
>>>>
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