ft Reflector"
Cc: "L Kendall"
Sent: 3/21/2011 8:06 AM
Subject: Re: [Elecraft] [K2] Ooof.. Update
That last R should have been R9, sorry for the typo (it is still
morning - need more tea)
73,
Don W3FPR
On 3/21/2011 8:59 AM, Don Wilhelm wrote:
>Larry,
>
> You
That last R should have been R9, sorry for the typo (it is still
morning - need more tea)
73,
Don W3FPR
On 3/21/2011 8:59 AM, Don Wilhelm wrote:
>Larry,
>
> You are trying to analyze too much in the KNB2 without looking at the
> schematic. The signal always passes through the Bandpass Fil
Larry,
You are trying to analyze too much in the KNB2 without looking at the
schematic. The signal always passes through the Bandpass Filter. It
only goes to the amplifier to detect noise.
So check the toroids L1 and L2, C3, C4, C6, C7, R8 and R8.
The RX signal should pass through the KNB2 w
I'm having a similar problem after installing the KNB2.
So, I triple checked component location and applicable polarity and all
solder joints for bad joints or bridged/shorted solder pads; removed,
checked and re-installed the 2 bandpass toroid chokes, checked the ID
number on the caps.
Checked
again Don!
Brian
KB1VBF
http://home.comcast.net/~b.denley/index.html
- Original Message -
From: "Don Wilhelm"
To: "Brian Denley"
Cc: "Elecraft Reflector"
Sent: Tuesday, January 18, 2011 10:43 PM
Subject: Re: [Elecraft] [K2] Ooof.. Update
> Brian,
>
Brian,
Actually, that does not make a lot of sense. The T/R switch is too far
removed from the KNB2 for that to be a problem (unless you were really
wild with the soldering iron :-) ).
Try jumpering (with a piece of bent wire) between pins 1 and 6 of the
J12 header. If receive comes back
I am beginning to think I may have wacked or damaged the PIN diode for the
T/R switch while adding the resistor for the KNB2. That might explain no
receive or transmit that I am getting now. Does that make sense?
Brian
KB1VBF
http://home.comcast.net/~b.denley/index.html
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