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RL Drake TR-5, 29.1 Accessory Crystal for the 17 Meter WARC Band 18.0 to 18.5 MHz NEW

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RL Drake TR-5, 29.1 Accessory Crystal for the 17 Meter WARC Band 18.0 to 18.5 MHz NEW

 

A 29.1 MHz accessory crystal (typically 29.100 MHz or marked as 29.1 in Drake contexts) in the R.L. Drake TR-5 transceiver provides coverage of the 17-meter amateur band segment from 18.0 to 18.5 MHz (a standard 500 kHz WARC band range).The TR-5 follows the same premix/accessory crystal scheme as the earlier Drake 4-Line series (e.g., TR-4, R-4C): the crystal frequency is low band edge + 11.1 MHz.
  • For 18.0–18.5 MHz: 18.0 + 11.1 = 29.1 MHz.
This is confirmed in Drake-related documentation, crystal sales listings (e.g., from resellers like ke9pq.com explicitly stating "RL Drake Crystal 29.1 MHz for 18.0 to 18.5 MHz Range"), and user discussions on groups.io/DRAKE-RADIO (where 29.1 MHz is repeatedly associated with 17m WARC coverage in 4-Line compatible rigs, including mentions for TR-5 adaptations).In practice:
  • Install the 29.1 MHz crystal in one of the available rear accessory sockets.
  • Select the corresponding crystal position (often aligned with the WARC/17m band selector or manual position).
  • Set the BAND switch/preselector appropriately (typically the 21 MHz/15m position or equivalent for WARC extensions in these designs).
  • The main PTO dial tunes directly across the 18.0–18.5 MHz range (reads in MHz, with generous overtravel of ~±50 kHz or more on the ends for extra flexibility).
This crystal was a common aftermarket/WARC addition for the TR-5, which included some WARC bands (like 30m, 17m, 12m) via optional crystals, as the rig was designed for broadband operation across 160–10m including those new allocations at the time.Note: This matches the pattern seen in prior Drake models (e.g., TR-4 series accessory crystals for 10m segments like 29.1–29.7 MHz used higher crystals, but for 17m it's consistently 29.1 MHz for 18.0–18.5). If your crystal is exactly 29.1 MHz and the unit is properly aligned, expect clean performance on 17m SSB (around 18.100–18.168 MHz) and CW/digital modes. If the tuned range appears shifted, verify with a frequency counter on the crystal or check transceiver alignment.
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