[Elecraft] P3, what lies ahead?

[nr4c at widomaker.com]

I have to ask, just how did you accomplish this with the P3?  Since  
the P3 output comes off the radio before the "Roofing" filters are  
inserted, the P3 should not show any result of filtering.

Now, I managed to smooth out my filter gains by using Hamscope which  
is an audio spectrum visualization tool.  This worked pretty well.

Funny thing, my 200Hz fileter with a -86Hz offset is pretty well  
centered about the centerline, but my 400 Hz 8-pole with 0 offset, is  
way off center!  So are the 1.8 and 2.8 filters.  What gives....?


...bc   nr4c



Quoting Amateur Radio Operator N5GE <n5ge at n5ge.com>:

>
> I used mine the other day to calibrate my filters gains.  It was easy to get
> them all matched up using the XG2 and the amplitude scale.
>
> Another use I plan for it is to adjust the preamp's in my xv432,  
> xv144 and other
> devices with preamp's using the N-GEN.
>
> It should function very well as a piece of test gear too.
>
> 73,
>
> Tom Childers
> Radio Amateur N5GE
> Licensed since 1976
> QCWA Life Member 35102
> ARRL Life Member
> Retired Professional
> C# Software developer
> http://www.n5ge.net
>
> On Wed, 23 Feb 2011 17:42:07 -0800 (PST), juergen  
> <plebian99 at yahoo.com>  wrote:
>
>>
>> Hi Bill
>>
>> The most logical next step would be transmit monitoring.
>>
>> I would like to see the facility for 2 directional couplers. One at  
>> the output of the K3 and one at the output of the amp. It would  
>> also be nice if you could have IN and OUT for these directional  
>> couplers so that you could use it for  scope monitoring or for  
>> inserting crystal notch filters inline for serious IMD monitoring  
>> of your amp.
>>
>> How far the P3 evolves into test instrument or a toy accessory, is  
>> really up to Elecraft. The P3 has sufficient performance to be a  
>> test instrument rather than being just a toy bandscope. The review  
>> in  QST alludes to this possibility.
>>
>> Telepost's new LP500  is where the P3 should be heading. However we  
>> will just have to wait and see what comes out from the end of the  
>> P3 engineering pipeline.
>>
>> My vote is for TX Monitoring and spectrum analyzer features. A  
>> tracking generator  would be nice for homebrewers as well.
>>
>> 73
>> John
>> --- On Wed, 2/23/11, Bill <able2fly at aol.com> wrote:
>>
>>> From: Bill <able2fly at aol.com>
>>> Subject: [Elecraft] P3, what lies ahead?
>>> To: elecraft at mailman.qth.net
>>> Date: Wednesday, February 23, 2011, 2:13 PM
>>>
>>> Has anyone figured out the possible purpose of those unused
>>> holes in the P3 backpanel?
>>>
>>> One of them labeled "sensor"  ???
>>>
>>> 73, K3UJ
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>>
>>
>>
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