Hallicrafters HT-7 Frequency Standard Manual Sorry, this product cannot be purchased. $6.99 Category: Hallicrafters Description Description For sale is reprint of Hallicrafters Model HT-7 Frequency Standard Manual. Manual is 4 Pages long and includes Part List and Circuit Diagram. Manual consists of 6 sections: Operation, Uses. HT 7 Part List. Related products Hallicrafters HT-33A Mk1 HT33A Power Amplifier Manual $7.99 Read more Hallicrafters S-37 S37 Very High Frequency Receiver Manual $11.99 Read more Hallicrafters SX-117 SX117 Communications Receiver Manual Ham Radio $9.99 Read more Hallicrafters S-20R S20R Sky Champion Alignment and Servicing Manual $8.99 Read more