Thanks Dave, with the price of the UM BCD-10 less than $20 and the cost of
the 8L01 at $1.72 each for ten, the cost of the interface is about $40 (plus
cables (if you don't have them), and connectors). In doing the research for
the project, I could not find anything "ready made" that I could with any
certainty determine would drive the Model 253 memory inputs. The Top Ten
Devices and Array Solutions band decoders appear to need a set of relays
and I could not see spending $155 to $255 and then having to build adapter
cables and a relay interface to do what I did for $40 and a few surplus
items from my junk box.
Could you add the UM BCD-10 to the Commander band decode info?
73 es DX,
Gary - AB9M
-----Original Message-----
From: Dave AA6YQ
Sent: Friday, May 20, 2011 6:08 PM
To: CSM(r) Gary Huber
Cc: TenTec Reflector ; w9aml@yahoogroups.com ;
Ten-Tec-Omni-VII@yahoogroups.com
Subject: Re: [TenTec] Commander - Unified Microsystems BCD-10 - Model 253
Nice work, Gary!
73,
Dave, AA6YQ
-----Original Message-----
From: CSM(r) Gary Huber [mailto:glhuber@msn.com]
Sent: Friday, May 20, 2011 6:16 PM
To: Dave Bernstein
Cc: w9aml@yahoogroups.com; Ten-Tec-Omni-VII@yahoogroups.com; TenTec
Reflector
Subject: Commander - Unified Microsystems BCD-10 - Model 253
Dave,
I recently completed a band decoding interface for the TenTec model 253
Automatic Antenna Coupler. The 253 requires a voltage of +10 to +14 VDC at
3 ma on one of seven pins to select the preset tuning information for up
seven memories on each of four switch positions (28 memories). Originally
the voltage and pin selection was provided by the TenTec transceiver, but
the OMNI-VII does not.
I used Commander to provide BCD via the computer parallel port to the
(solder pads ABCD) UM BCD-10, the band is decoded (J1 1-9) which then pulls
down pin 2 of the selected (band) 8L01 DIP Relay, which upon contact closure
outputs +12 VDC on pin 14 to one of seven Band Select pins on the #86027-26
to the 15 pin Molex® on the rear panel of the model 253 tuner. Pins 6 and 8
of the 8L01 DIP Relay are at +12 VDC supplied by +VR of BCD-10. The UM
BCD-10 receives +12 VDC from the OMNI-VII Power Supply.
references:
Model 253 Operators Manual pages v, 2-4, 2-5
8L01-DIP-Relay-PDF page 27
http://www.unifiedmicro.com/decoder.html (bcd1.jpg)
http://www.dxlabsuite.com/commander/Help/index.htm
Best regards,
CSM(r) Gary Huber - AB9M
9679 Heron Bay Rd
Bloomington, IL 61705
(309-662-0604)
www.csm-gh.com
glhuber@msn.com
gary.huber@us.army.mil
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