Drake Radio Modifications  

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Drake R4C Receiver Evolution Of Three Versions

Drake 4-Line Internal Digital Frequency Diaplay, by Mark Gilger / WB0IQK

New INRAD 2.8Khz Filter For the TR-7(A), by Jeff Covelli / WA8SAJ

Drake TR-7 Front Panel Transmit Power Control, by Jeff Covelli / WA8SAJ

The N4YG DDS (Digital) VFO and the Drake TR-7, by Floyd Sense / K8AC

Installing the X-Lock-3 in the Drake TR-7, by: Pete Juliano / N6QW

Drake L-4B, Table Top Amplifier Redesign, by: Ron Baker / WB4HFN

Drake TR-7 Improvements - Installing X-Lock VFO Stablizer / KI4GIN

The Drake TR-6 and TR4 Series AM Filter Up Date,  by: Jeff Covelli / WA8SAJ

Pin Diode Attenuator For The Drake TR-7 Power Amplifier, by Floyd Sense / K8AC

Drake 2-B Receiver Modification to Add 160 Meters

High Speed Switching For The L-4B Amplifier, by Garry Drummond / K4OR

Electronic Bias Switching For The Drake Amplifier, by Garry Drummond / K4OR

A Homebrew AUX-7 Board for the Drake TR7 and R7, by Floyd Sense / K8AC

Homebrewing The Drake 1544 RV75/R7 Adapter, by Lee Craner / WB6SSW

The Drake TR-7 Transceiver Renewed, by Marc Van Stralen / PA1HFO

Vintage Radio Refurbishing Before Restoration, by Ron Baker / WB4HFN

TR-7 Modification For Wide Band AM Transmitting, by Jeff Covelli / WA8SAJ

Using the Drake TR-7(A) "Store" Switch To Add A Transmit Key Function, by: Ron Baker / WB4HFN

R4C Receiver power supply modification using LM7812 regulator,  by: Ron Baker / WB4HFN

Test results using the 6JU6 tube as a replacement for the 6JB6,  by: Ron Baker / WB4HFN

T4X Series AM Mode Modification,  by: Mark Gilger / WB0IQK

R4 Series AGC Modifications,  by: Mark Gilger / WB0IQK

T-4X OR TR-4 DC Fan Installation,  by: Mark Gilger / WB0IQK

Adding an AM Filter to a Drake TR-4C,  By: Mark Gilger / WB0IQK

Adding An AM Filter To the Drake TR-4CW,  by: Jeff Covelli / WA8SAJ

New INRAD Filters For The Drake TR-4CW,  by: Jeff Covelli / WA8SAJ

L4 & L7 Replacement Electrolytes - An Inexpensive Drop-In Replacement,  by: Evan Rolek / K9SQG

Drake T-4 Line Circuit Modification for High Fidelity AM,  by: Thomas Cathey / K1JJ

The “RAC” Digital-Dial for Your Old Boatanchor, by Jeff Covelli / WA8SAJ

Add Two More Switched Coax Connectors To the MN-2700 Tuner, by: Lee Craner / WB6SSW

Programming Modules for the AUX-7 Board, by: Gary Poland / W8PU

The Drake AC-4 And AC-3 Power Supply Upgrade, by: Jeff Covelli / WA8SAJ