[TenTec] TenTec Wiki - Model 253 tuner mod

[CSM(r) Gary Huber]

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 at 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 at msn.com
> gary.huber at us.army.mil
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>
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