Sunday, July 26, 2020
Lest I forget, I thought I should share with you the most complete compendium of Swan transceiver and accessory information you can find online — the Swan Tube Transceiver Compendium.
The version I found is dated October 2005 and was compiled by Robert Balonis, NB3W. It is 320 pages of information that covers the history and technical aspects of every Swan product manufactured.
I point this document out because its been immensely helpful to me of late. In fact, thanks to the compendium, I found out that my radio has more features than I initially believed it has!
On page 30 of the Compendium, it notes that the Swan 350 received “more factory updates and post-sale modifications than any other piece of Swan equipment.”
As it turns out, if a Swan 350 was sent in for service, the factory would update an early version of the rig with all the current updates — at no charge to the owner. This explains why my rig — one that appears to have been an early model with the reverse-reading S meter, but it has updates added that include full coverage of the 10 meter band; addition of a Dial Set control; an update to add the “reverse sideband” switch to the REC / TUNE-CW switch; addition of a 100 kHz marker feature, enabled by pulling out on the RF Gain control.
The rig has the later band scale with the green band, denoting the full 10 meter band coverage; however, the rig did not come from the factory with the accessory jack installed. A common change to the 350 was made using the accessory jack — the audio cable from the rig to the speaker in the power supply was removed from the main power cable via an outboard shielded coaxial cable. This was to remove hum and other induced artifacts that were amplified and picked up by the speaker.
There are a number of checks I need to make on the rig once I get the covers off to determine why the PA stage isn’t working. Work to come soon … updates will follow.
73 es CUL … de KY4Z … SK SK … (dit dit)