[Elecraft] ARR P50VDG Problems

[Chad Wasinger]

FYI – this problem turned into being a bad KXV3A board. Works like a charm 
now.

-----Original Message----- 
From: Lance Collister, W7GJ
Sent: Tuesday, April 09, 2013 9:31 AM
To: Chad Wasinger
Cc: Pete Lascell ; elecraft at mailman.qth.net
Subject: Re: [Elecraft] ARR P50VDG Problems

Hi Chad,

I have always been instructed to power the preamp from a SEPARATE 12 VDC 
"wall wart"
power supply. There can be transients on the main power supply that can 
cause voltage
spikes dangerous to the preamp. I would urge you to run the preamp on a 
separate
little power supply and see if that helps. If it doesn't help, I would make 
sure to
keep it set up that way anyway, as you find what additional problem you have 
in the
K3 settings. GL and VY 73, Lance


On 4/9/2013 2:16 PM, Chad Wasinger wrote:
> Pete - I'm powering the ARR preamp from the same power supply as the K3 
> but not using the K3 accessory power port.
>> From: plascell at verizon.net
>> To: chadwasinger at outlook.com; elecraft at mailman.qth.net
>> Subject: Re: [Elecraft] ARR P50VDG Problems
>> Date: Tue, 9 Apr 2013 10:10:07 -0400
>>
>> Are you powering the ARR amp from the K3 or external PS?
>>
>> My ARR pre-amp works fine - it is powered from external power, not from 
>> the
>> K3 accessory power.
>>
>> Pete, W4WWQ
>> .
>>
>>
>> ----- Original Message -----
>> From: "Chad Wasinger" <chadwasinger at outlook.com>
>> To: <elecraft at mailman.qth.net>
>> Sent: Monday, April 08, 2013 10:11 PM
>> Subject: [Elecraft] ARR P50VDG Problems
>>
>>
>>> Hi Group,
>>>
>>> Just recently hooked a Advanced Receiver Research P50VDG 6 meter preamp 
>>> to
>>> my primary K3/10. Right off the bat I heard a internal relay start
>>> chattering with the preamp on and RX ANT setting engage (of course this 
>>> is
>>> all in receive mode). Turned everything off to re-evaluate connections 
>>> and
>>> setup correct. I then put the K3 into attenuation mode to eliminate some
>>> of the gain, no luck.
>>>
>>> Consulted with some fellow hams and Elecraft, Elecraft thought the 24 dB
>>> of gain might be too much and causing an overload on the front end (and
>>> the relay chatter). To make a long story short, I tried the suggestions
>>> and still having the same issue. So I took the P50VDG to my secondary
>>> K3/10, works like a champ and as I would expect. Now I’m wondering what 
>>> is
>>> different about my primary K3.
>>>
>>> Short video of the noise which seems to be produced by the relay 
>>> chatter:
>>> https://vimeo.com/63535627
>>>
>>> Anyone experience this or have some suggestions? My primary K3/10 is at 
>>> my
>>> remote station using the K3/0, my secondary is at home and backup.
>>>
>>> Chad
>>> N0YK
>>>
>>> ______________________________________________________________
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:Elecraft at mailman.qth.net
>>>
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>      ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>


-- 
Lance Collister, W7GJ
(ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ, E6M)
P.O. Box 73
Frenchtown, MT   59834-0073
USA
TEL: (406) 626-5728
QTH: DN27ub
URL: http://www.bigskyspaces.com/w7gj
Windows Messenger: W7GJ at hotmail.com
Skype: lanceW7GJ
2m DXCC #11/6m DXCC #815

Interested in 6m EME?  Ask me about subscribing to the Magic Band EME
email group, or just fill in the request box at the bottom of my web
page (above)!