Crystals
Beware of amateur grade crystals advertised in ham magazines. Many do not have good enough calibration tolerance or stability. Insist on only commercial grade crystals for any 2-way radio equipment. Note that we no longer sell "express" crystals. The labs with which we deal no longer want to have to answer customer complaints about frequency drift due to aging. Some labs do make express crystals, but, if pressed, they will admit that you should buy good crystals at the same time and discard the quickie crystals as soon as possible. Frequency Stability OptionsWe offer 2 frequency stability options for our TA51, TA451, and TA901 Exciters and our R100, R144, R451, and R901 Receivers: Standard frequency stabilityfor amateur transmitters and all receivers consists of a commercial-grade crystal with a rating of ±5 ppm over a temperature range of +10°C to +60°C (50°F to 140°F). Synthesized RadiosNote that our synthesized radios do not require channel crystals or crystal ovens. Factory wired synthesized radios come standard with temperature compensated crystal oscillators (TCXO), which provide 2ppm stability over a temperature range of +10°C to +60°C (50°F to 140°F) without requiring a crystal oven. That is a major advantage of synthesized modules vs. crystal controlled. PRICE:Crystals, commercial grade, for all units $25.00 (allow 2-3 weeks for manufacture) |
We use only good quality, commercial grade crystals of 5 ppm tolerance from the best crystal labs. Normal delivery time is about 4-5 weeks because the best crystals are aged to provide good stability over a period of time. Sorry, no COD's on crystals.