The Argonaut 505 has an analog dial.
Band coverage: 80, 40, 20, 15 and 10 meters. Modes are SSB and CW.
The Resonate control peaks the transmitter and receiver. The Argonaut 505 has Argonaut on the left side of the front panel near the Ten-Tec logo. Mode switch has Off, SB-R, CW, SB-N and LOCK. Microphone gain and CW Drive are on the rear panel.
Note: Some 505s have been modified; the Sensitivity control was replaced with a concentric pot to move Microphone gain and CW drive to the front panel.
The Argonaut 509 has an analog dial.
Band coverage: 80, 40, 20, 15, and 10 meters. Modes are SSB and CW.
Resonate control peaks the receiver, transmitter is broad banded. The Argonaut 509 has Argonaut 509 on the front panel near the Ten-Tec logo and the serial number begins with 509. Mode Switch has SB-R, CW, SB-N and LOCK.
The Argonaut 505 and 509 front panels are cream colored with wood grain top and wood grain inserts on the side panels. The 505 and 509 could also be purchased with an optional wood grain front panel.
The Argonaut 515 has an analog dial. 10 meters is in four sections on an auxiliary band switch. Band coverage is 80, 40, 15 and 10 meters. Modes are SSB and CW. The Argonaut 515 has Argonaut 515 under the Ten-Tec logo on the left side of the front panel.
Argonaut II – Model 535
The Argonaut II is the QRP version of the Delta II. The Argonaut has a liquid crystal display. Band coverage is 160, 80, 40, 30, 20, 17, 15, 12 and 10 meters transmit and 100 KHz to 30 MHz receive. Modes are SSB, CW, and FM and receive only on AM. The early Argonaut IIs did not have an External Speaker Jack or J-1 accessory jack (for computer control of the Argonaut) on the rear panel. The External Speaker Jack and J-1 Accessory Jack were added in June 1992.
The Argo 556 is the QRP version of the Scout. Band coverage is 160, 80, 40, 30, 20, 17, 15 and 12 meters. The Argo 556 covers 28 to 28.5 MHz on 10 meters. Modes are SSB and CW. The Argo 556 uses plug in modules for band change, has a built in keyer (Mode B) and no VOX.
The Argonaut V is a DSP based transceiver. Band coverage is 160, 80, 60, 40, 30, 20, 17, 15, 12 and 10 meters. Unlike the previous Argonauts, the Argonaut V is not limited to QRP but has a full 20 watts output on CW, USB, LSB, FM and 20 watts peak on AM. The Argonaut is also digital ready and will connect directly to the computer sound card for digital modes. The Argonaut V’s software package is up gradable from a PC by downloading software from the Ten-Tec web site.