Thanks Barry,
Those who need a band decoder for a Hercules linear amplifier, this band
decoder will also work for the Hercules if the band outputs from the relays
are matched to the Hercules remote cable.
73 es DX,
Gary - AB9M
-----Original Message-----
From: Barry N1EU
Sent: Saturday, May 21, 2011 1:04 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] TenTec Wiki - Model 253 tuner mod
The mod was added to the wiki by N5NA
73, Barry N1EU
On Sat, May 21, 2011 at 4:11 PM, CSM(r) Gary Huber <glhuber@msn.com> wrote:
Alan, please add the following mod for the Model 253;
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
to
seven memories on each of four switch positions (28 memories). Originally
the voltage and pin selection was provided by the TenTec transceiver (band
information), but
the OMNI-VII does not.
I used DXLab 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 of the relay 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.cotorelay.com/8L.pdf )
http://www.unifiedmicro.com/decoder.html (bcd1.jpg)
http://www.dxlabsuite.com/commander/Help/index.htm
I’ve forgotten how to submit the info directly, thank you for your
assistance.
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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