[Heathkit] HW-16 Warble

[Ron Youvan]

   On 08/16/2016 11:08 PM, Mark K3MSB wrote:

> I’m restoring an HW-16 and HG-10B for a buddy.  I stripped the chassis and
> cleaned it, replaced the electrolytic capacitors and associated resistors
> (using the kits from Hayseed Hamfest – nice stuff),  checked voltages,
> resistances etc.   Got rid of bad solder joints, got rid of some rust
> lurking under solder lugs etc.

> The units look sweet and play sweet….except…..for an intermittent warble on
> the TX and RX signal.   Sometimes only on the TX signal, sometimes only the
> RX signal, sometimes both.  My buddy used a standalone receiver and says he
> heard the warble on the HG-10B Spot signal.
/* snip */

> Ideas solicited and welcomed!

   'Scope out the power supply Voltages even the filament Voltage/s.
Bridge bypass capacitors one at a time.  (parallel them)
-- 
   Ron  KA4INM - Youvan's corollary:
                 Every action results in unwanted side effects.