THANK YOU! jack ak7o
----- Original Message -----
From: "Ken Brown" <email@example.com>
To: "Discussion of Ten-Tec Equipment" <firstname.lastname@example.org>
Sent: Saturday, July 29, 2006 4:31 PM
Subject: [TenTec] Filter Information, and request for more
> Hi all,
> Ten-Tec optional accessory filters have both a model number and a stock
> code. Standard filters may not have a model number and just a stock
> code. (I am speculating on that point.) Sometimes
> both of these numbers appear on the filter, each number ink stamped on
> one of the crystal cans, and sometimes only one of the numbers is there.
> Sometimes only part of one of the numbers is legible. If both numbers
> are there, they are usually in two different colors of ink. There are
> also other colored marks on some of the crystals, which may be some kind
> of batch code, or indicator of frequency offset from nominal
> specification. (also speculation on my part) Anyone know?
> Here is the data I have collected about model numbers and stock codes
> for Ten-Tec crystal filters
> Model Number / Stock Code
> 216 / 48161
> 217 / 48306
> 218 / 48037
> 219 / 48055
> 220 / 48058
> 221 / 48243
> 282 / 48054
> 285 / 48053
> 288 / 48075
> unk / 48127 6 kHz BW 9 MHz IF filter used for AM in Paragon
> unk / 48074 ? possibly an alternate stock number for the model 220 or
> the number used for the 8 pole 2.4 kHz standard filter when not sold as
> an optional accessory?
> There are some gaps in this information. I would like to collect more of
> this information. It can be very helpful when we have an unknown filter.
> Some of this data came from a single page included in the manual for my
> first Ten-Tec radio, an Omni VI. The heading of that page is TEN-TEC
> INSTRUCTION SHEET MODELS 216, 217, 218, 219, 220, and 221 CRYSTAL
> FILTERS. Some of this information came from the PASSBAND TUNING BOARD
> SCHEMATIC in my Paragon II manual. The rest of the information came from
> looking at the filters in my rigs.
> Next time you have your rig open, please take note of the numbers on
> your filters and post any accurate information on the reflector, so we
> can develop a complete cross reference list.
> DE N6KB
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