Uniden 2020 Technical Information

Tempo 2020 Restoration Notes March 2, 2014 – Updated with X-LOCK, VFO Stabilizer Successfully Installed Added Long Term Heat Testing and X-LOCK Chang

The Model 810 external VFO is relatively easy to add the X-LOCK. You could also do the internal VFO with more mechanical complexity. Only the external

Conclusions  The oddball hybrid frequency display is amazingly accurate and linear, end to end, on each segment – better than all my vacuum tube Co

Photo Gallery Back Panel

Driver Board with DD-103 Interface View Bottom View

Top View Unique Hybrid Display

PA Bottom, Note Proper Stud Mounted 200 Volt Zener Diode Operations Board (085) Removed for T/R Delta Diode Fix

Most Excellent X-LOCK Board VFO Can Removed, 10k Resistor and 2 Connections

VFO Can Back On and X-LOCK Board Mounted to the Side with Velco

Front View I would then download the user and alignment manuals and all the N4PL files plus the 3 flavors of sprocket repair. The annotated schemati

3. Measure driver and PA tube voltages. The Alignment Manual has tables with the proper voltages. Make sure the 6146B screen grid 200 VDC regulation

Original Cracked Nylon with C-clips Fix Attempt

New Sprockets and Chains – Whew! Sprocket Alignment The pre-selector alignment is well documented where the chain tensioner needs to go etc. The ba

c. If you are really anal, you can now rotate the band switch through all positions and inspect the switch contact positions for somewhere close to b

Low MIC Gain The stock Tempo high output hand mic required the mic gain almost fully clockwise and some bands would never indicate ALC action. I unde

LO Card Band Pass Filter Adjustment My bad past experience tells me never mess with band pass filters to avoid damaging unobtanium coils etc. Since I

under the switch. The parts list does not note matched, but they sure need to be reasonably matched if you want to transmit and receive on the same fr