Application Notes
Sienna:
Sienna Construction Note - 8/20/09 - RS-232 interface assembly, top cover warp (All models)
Sienna Construction Note - 9/15/09 - Receiver power mod (Rev A boards only)
Sienna Construction Note - 10/21/09 - Bottom cover plate fit (Plate alignment - all revs; Fit to bottom - rev A only)
Sienna Construction Note - 10/25/09 - Cabling issues
Sienna Construction Note - 11/1/09 - Use of 115200 Baud rate on RS-232 port (serial numbers 10-15)
Sienna Construction Note - 11/12/09 - Transmitter finals burn out too easily (Rev A Tx boards only)
Sienna Construction Note - 11/13/09 - Jumpers on Tx board are labeled wrong (Rev A Tx boards only)
Sienna Construction Note - 12/09/09 - IF Out signal level improvement mod (Rev A and A1 Rx boards only) (Updated 3/31/10)
Sienna Construction Note - 1/03/10 - Gradual transmitter power loss in CW and FM modes (Rev A Tx boards only)
Sienna Construction Note - 1/09/10 - High transmit distortion in USB mode (updated 2/6/10)
Sienna Construction Note - 2/27/10 - 12-button keypad doesn't work and mono plug in manual key jack keys Tx all the time (Rev A cables)
Sienna Construction Note - 4/30/10 - On-off switch difficult to insert in front panel (All models)
Sienna Construction Note - 5/26/10 - Rev B Controller, Receiver, Transmitter and Firmware now in production
Sienna Construction Note - 6/10/10 - All models. Fix for meter backlight "spotlight" effect
Sienna Construction Note - 6/22/10 - All models. AM receive sensitivity improvement
Sienna Construction Note - 6/26/10 - All models. Headphones pick up RF when using 100W amp
Sienna Construction Note - 6/27/10 - All models. Under-rated capacitors on 100W amp with high VSWR
HM-17 SWR Meter kit:
HT-7 40M AM Handie-Talkie:
HT-7 Construction Note - 6/09/09 - Cabling, connector fit issues