Heathkit Information, Modifications and Rebuilds

I like the Heathkit SB-Line “green” styling and have made a number of new units in this style as well as modifying and completely re-engineering some others - the following projects show the results of my efforts. Some of these are relatively simple modifications and the rest are complete rebuilds in order to improve the performance for use in today’s crowded European band conditions.

Dual Z-Match covering 1.8 - 146MHz
Lattice Filter at 3.395MHz
Measurements on and circuits of some Heathkit crystal filters
Some re-engineered PSUs for use with SB-Line and other units
A multi-line power supply for a QRP battery valve rig
Low voltage high current power supply
My thoughts on aerial selection and sharing
Addition of 160m on a new band position.
Modifications and changes to overcome component ageing.
Complete rebuild on a new chassis with many additional features
Suggested modifications to an SB104/104a.
Complete rebuild on a new chassis with many additional featurres
Change keying system to full break-in using grid blocked keying plus an electronic T/R switch and addition of 160m.
Information and measurements on some inductors
Some suggestions for replacing broken or worn parts
A variant on the SB-630 Console
Repackaging the HM2102.
A multi-voltage PSU in the Heathkit style for valve peripherals
Three band transverter styled to match the SB-101
Some thoughts on adding other bands
To follow as time allows:
Station Monitor

N) = New, (U) = Updated, blank = no recent change

Re-engineered Units

Summary of my completely re-engineered units in the Heathkit style