Re: Help needed adjusting SSB readout

Hi Bjern, 

You may have seen or done this, but if not....

"Main VCO (uses a DC voltmeter)

- Voltmeter to test point TP2011(VCV) and ground.

- Tune to 312.9 MHz, adjust coil L2076 for 7 V.

- Tune to 1 MHz: you should have 1.0 V.

- Tune to 621.9 MHz, adjust coil L2098 for 7 V.

- Tune to 313 MHz: you should have 1.0 V.

 

Sub VCO (uses a DC voltmeter)

- Voltmeter to test point TP2010(VCV)

- Tune to 2599.9 MHz, adjust coil L2053 for 6.5 V.

- Tune to 4.9 MHz: you should have 2.0 V.

 

PLL Reference Frequency (uses a frequ. counter)

- Frequ. counter to J2010, tune receiver to 1 MHz.

- Adjust TC2001 so the freq. counter shows 568.245 +/- 100 Hz.

 

Receiver Interstage Transformers (uses a SG and a Sinad meter)

- Tune receiver & SG to 101 MHz.

- Set SG for ±3.5 kHz dev, 1kHz tone mod, 10 dBuV output level.

- Adjust CV3001 & CV3002 for optimum SINAD.

- Reduce SG level as necessary for proper meter deflection.

- Final level should be <3dBu, 12 dB SINAD."

Good luck - I mainly use mine for VHF, but I'll give it a try on HF and see what it sounds like...

Regards - Marty

--- In [email protected], "dutch27052002" <basnelders@...> wrote:
>
> Hi all,
> I'm new to the group, recently bought a VR-5000 to use it as receiver while on holiday. I've owned quite a few HF-receivers (being a SWL for more then 40 years) and i think the VR-5000 is not a bad receiver (i've seen and owned worse)
> The only thing that bothers me is tuning in LSB or USB is 150 Hz off (3.65500 in LSB requires 3.65350, in USB it is 3.6565 to sound natural)
> I've only found one message (from 2002!) wich describes more or less the same problem without being specific about wich trimmer to adjust, is there anybody who knows wich of the 3 trimmers to use to adjust LSB and USB?
> 
> Regards,
> Bjern NL6001SWL
> The Netherlands
> 
> AOR-5000 filter modified
> JRC NRD535D with KIWA-mods/NVA-319
> Yaesu VR-5000 (soon with DSP-1)
> Wellbrook ALA1530 magnetic loop
> BHI DSP controller
>