[DSP-10] Voltage readings and more

[Don AE5K]

OK Mike, will do the coil peaking in transmit -- L8, L9, L10, L11, L12, 
L13.  But this will probably not solve the intermittent problem of the 
output level jumping around from -0.6 to +3.6 dBm and point in between.  
So it could be the output will increase with coil peaking and that could 
be one problem we're seeing, but the other seems to be in the tx chain 
around U5.

News at 11 or whenever I find something of significance.

Don AE5K

On 04/14/2013 10:03 AM, kd7ts wrote:
> Hi Don,
>
> I must admit I am baffled. I cannot come up with anything new to check.
>
> I think you are on the right track. If I had the DSP-10 here, the 
> first thing I would do is peak the coils in transmit with a power 
> meter connected to the coax connector coming from J3. The tune up has 
> this step done in receive.
>
> All the checking you have done seems to suggest that the RF amps are 
> working and the drive is very low. That is just my best guess from a 
> distance.
>
> I attached a picture of the cabling of how my DSP-10 is connected. 
> orientation is with the regulators at the bottom and connectors to the 
> left.
>
> Mike KD7TS