Johnson Viking Ranger # 9 Rebuild Complete

Description

EF Johnson
Viking Ranger I, # 9
SN: 34868
This Ranger i is wiring version II ( includes keyer/bias sub panel and PTT).
For Auction:
Johnson Viking Ranger, SN: 34868
Rebuild Complete
* Overhaul/rebuild started
* Unit disassembled to chassis,
* Rebuild started
* Chassis thoroughly cleaned, top and bottom,scrubbed, water washed, air dry Chassis top does exhibit minor pitting which is not removable.
* Tube sockets replaced ( RF tube sockets not yet replaced)
* Burned, missing and broken interconnect wiring replaced ( a LOT of burned wiring).
* We always find mis-wiring, cold or non-soldered connections ( this unit was no exception)
* Tube heater circuit completed for microphone and modulator circuit
* Mode switch AC line switch function checked and contacts cleaned
* All terminal strips replaced
* Mil grade 6-32 nut plates installed on rear chassis lip
* VFO Overhauled and tested.
* Ball drive disassembled, cleaned and modified for installation of snubber assembly
* VFO insulated coupler rebuilt
* All set screws replaced with 6-32 allen screws
* VFO band switch repaired ( it was frozen in one position: lack of lubrication)
* Buffer and PA tuning shaft support brackets de-rusted
* New rubber grommets installed in appropriate positions.
* Front panel for this unit shown, it needed only a slight bit of Maroon touch up.
* Underchassis wiring mostly completed. Rats nest wiring reconfigured
* Keyer/Bias sub panel installed ( not yet wired in)
* PTT module installed ( not yet wired in)
* Modulation and HV Choke installed
* RF multiplier string wiring complete
* HV & LV rectifier tube sockets wired in
* Tube heater test
* Chassis mounted line fuse installed
* Mode switch cleaned and tested
* Solid State Drive and Solid State +300VDC regulator modules installed
* Bandswitch shield fitted
* PA Tube grid components installed
* Band switch support bracket attach hardware replaced
* VFO output/input terminal strip installed
* VFO Installed
* Microphone pre-amplifier wiring complete
* PA Tuning capacitor re-installed
* PA Loading capacitor re-installed
* Microphone pre-amplifier transformer re-installed
* +300VDC solid state regulator tested
* + 300VDC buss tested.
* Solid State drive control tested
* New meter switch wiring complete.
* PTT module wired and tested
* VFO output tested in VFO & Spot modes
* Keyer tested
* Modulator bias adjustment tested.
* Temp panel meter installed
* OSC, BUF,GRID metering tested all bands ( except 11 meters, disabled)
* PTT circuit tested all bands
* HV components installed ( HV Filter capacitor/bleeder assembly)
* Rear chassis jumper socket components installed
* Microphone preamp circuit tested to grids of modulator tubes
* Microphone jack installed
* PTT circuit tested from Mic Jack
* Modulator tube screen voltage via mode switch tested
* Installed front panel
* Clear coat cleaned knobs and installed
* Rework meter input circuit
* Tested panel meter
* Installed panel and meter lamps, not yet connected
* Connected panel lamps
* Replaced wafer A of SW-4 ( mode switch): burned contacts
NOTE: We completely rebuilt Wafer A, new contacts, new ceramic wafer, repaired interconnect wiring.Mode Switch wafer A was incorrectly wired and as a result the line switching contacts were melted.
* Replaced two burned wiper contacts on SW4A
* Installed front panel, vfo bezel, vfo tuning mechanism, ball drive snubber. Tested and adjusted ball drive overtravel torque.
* RF Power and Modulation tests. Set Mod idle IP.
* Unit tested with shop microphone.
* CW mode tested
* Clamp current checked
* NOTE: This unit has a 6146B installed. No stability issues observed.
* Cabinet photo: Cabinet badly needs a repaint.
Known Issue
Photos : Unit you will receive . .SN: 34868
* Alll sales final, no warranties or guarantees expressed or implied. No returns. Technical assistance, if needed after sale, via Email.
* Please do not purchase a transmitter such as this Ranger unless you are familiar with vacuum tube transmitters of this era.
* Please Note: This Ranger is equipped with PTT, ( Push to Talk) and therefore will NOT tune up or transmit ( in VFO selected) without the PTT being energized.
We have had customers who purchased these units and did not read the operational notes about PTT and could not understand why the unit would not tune up or transmit.
Shipping Via Fed Ex, insured for sale value. Double Boxing standard, Gross shipping weight approximately 95#. Schematics of modifications accomplished, copies of unit schematic and operational notes included.
* Unit SN: 34868,