1. DINO Sat TNC PacComm TimeWave Kantronics

2. PK-96: 9600 baud –Before modifications: High power consumption: 12V @ 400mA (4.8W) Electrolytic capacitors, battery, fuse –After modifications: Still high, but much lower power consumption: 12V @ 100- 110mA (around 1.3W) –Possible to run at less than 12V –Have to replace existing chips with CMOS chips Battery can be removed Fuse can be replaced with a wire Electrolytic capacitors can be replaced with ceramic capacitors

3. PK-96: 9600 baud –PROS: Great technical support Already have this particular TNC here Not extremely expensive: $220. –CONS: High power consumption Must replace existing capacitors and chips to reach the specifications we want

4. KPC-9612+ –PROS: Power Consumption: 5.5V to 25V @ 45mA (.25W to 1.1W) Fast data transfer –Up to 38.4Kb/s which can be modified with a crystal change that will bump it up to 56Kb/s –However faster data transfer rates are limited by the radio we use –CONS: Communications with the company –Unable to contact via phone –Email takes about 1-2 weeks Contains electrolytic capacitors

5. PicoPacket –1200 baud Ultra-mini Portable TNC SPIRIT-2 –9600 baud TNC TINY 2-MK-II –1200 baud TNC Ultra-miniature Packet Modem –9600 baud surface mount TNC

6. Ultra-miniature Packet Modem (UP9600): 9600 baud –PROS: Very low power consumption: 9V to 12V @ 30-60mA (0.27W to 0.72W) Customizable Firmware available Small size: 2.5” x 4.75” –CONS: Price: $595. Have had troubles customizing PacComm TNC’s in the past

7. Recommendation The PacComm UP9600 –Meets all specifications –Uses by far the least amount of power –Surface mount design saves us time by not having to modify any parts –The only downfall: The Price: $595.