GPS-disciplined crystal channels for the Hammarlund SP-600-JX Bringing parts-per-billion frequency stability to a 1950s spy-radio classic using a $18 programmable crystal module and a GPS receiver The Hammarlund SP-600-JX is one of the great communications receivers of the vacuum-tube era…
Low-Noise Resistor Selection for Vintage Receiver, Transmitter, and Transceiver Restoration A practical reference for choosing replacement resistors in premium HF tube equipment — from receivers like the R-390A and SP-600, through transmitters like the 32S-1 and Apache TX-1, to transceivers…
Choosing an SDR Front-End for the Hammarlund SP-600: Variants, Architectures, and Companions A variant-aware guide to pairing the Hammarlund Super-Pro 600 with a modern spectrum display — because the SP-600 you own may not be the SP-600 the other fellow…
vk6ada.com.au • SDR Integration Series • Hammarlund SP-600 SWL Station Web-888 with the Hammarlund SP-600The Simplest and Cleanest Web-888 Integration in the Series — A Complete SWL Station Guide The Hammarlund SP-600 is a receiver. It has no transmitter, no…
vk6ada.com.au • Hammarlund SP-600 Technical Series Hammarlund SP-600 Communications ReceiverFailure Prevention Kit — Component & Modification Design A complete engineering analysis of the ten predictable SP-600 failure modes: power supply and paper capacitor ageing, the tunable preselector variable capacitor rotor…
Hammarlund SP-600 Restoration Guide | VK6ADA VK6ADA vk6ada.com.au • r-390a.net Boatanchor Receiver Restoration Series Hammarlund SP-600Restoration Guide A complete field guide to the cosmetic and mechanical restoration of the Hammarlund SP-600 series military HF communications receiver — covering variant identification,…
If you own or are restoring a Hammarlund SP-600, one resource you need to know about is Perry Sandeen’s An Anthology of Technical References for the Hammarlund SP-600 and its Variants. This is a comprehensive compilation covering the SP-600 receiver family…