HTX-100 Accessories-Radio Shack HTX-100

Radio Shack HTX-100

HTX-100 Accessories

HTX-100 Push-to-Talk (PTT) Adapters
 
Using your HTX-100 for new digital modes (like FT8, JT65, etc) using a Raspberry Pi is as easy as adding a USB sound card, connecting the audio in/out, controlling PTT from the Pi, and running an application (such as WSJTX).

The Raspberry Pi GPIO pins can't directly control the HTX-100 and it is important to isolate them from the HTX-100.  I used an opto-isolator to create three versions of PTT Modules to connect your Raspberry Pi to your HTX-100 (or nearly any other rig)!
  No need to design or build your own circuit/adapter - I've already done it for you!

VersionHTX-PTT1HTX-PTT2NEW! HTX-PTT3
Printed Circuit
Board-Only
or Kit

Price
HTX-PTT1_BRD-BOTTOMBoard Only
$1.50
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IMG_7700Board Only
$2.50
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IMG_7775kit118-Piece Kit
$14.95
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IMG_9982_brightBoard w/
Mounted
Parts
$4.50
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IMG_9992 Full Kit
$9.95
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USA ShippingGreen_CheckGreen_CheckGreen_CheckGreen_CheckGreen_Check
Assembly/Reference Manualnone[CLICK][CLICK][CLICK][CLICK]
Opto-Isolator4N25/M4N25/M4N25/MEL357NEL357N
Board Size (mm)20.4 x 17.130.3 x 22.930.3 x 22.921.75 x 11.521.75 x 11.5
rPi Connector1x62x62x62x62x6
Mounting/Spacer Holesnone2211
RF Filter Capacitor (1nF)optionaloptionalIn-KitOn-BoardOn-Board
Ground-Bridge OptionAlways
Bridged
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Fully compatible with
WSJTX Standard
(GPIO17 - Serial Port RTS)
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High-grade Two-layer
PCB with solder-mask
and silk-screen
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Works with most
Ham Radios
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Works with any
Raspberry Pi
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PTT Strain-Relief HoleGreen_CheckGreen_CheckGreen_CheckGreen_Check
Red LED during PTTGreen_CheckGreen_CheckGreen_CheckGreen_Check
Pass-through Raspberry
Pi Connector
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Pass-through IC HeaderGreen_CheckGreen_Check
Includes ALL required
and optional parts in Kit
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Pre-installed Surface-mount
Opto-Isolator, Red LED, &
RF Filtering Capacitor (and
 current-limiting resistors)
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LED Enable/
Disable Jumper
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See below for additional details about each of the three versions.







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NEW! VERSION 3!    Raspberry Pi to Radio Shack HTX-100 Push-To-Talk (PTT) Adapter
  • Easily and reliably connect any Raspberry Pi to your Radio Shack HTX-100 PTT line
  • Detailed Assembly/Reference Manual
  • PC Board INCLUDES PRE-INSTALLED Optocoupler, Red LED, & RF Filtering Capacitor (and current-limiting resistors)
  • Electrically-isolated optocoupler
  • Terrific for FT8, JT65, FT4, JT9, PSK31, RTTY, SSTV, and more digital modes using WSJT-X or any other digital communications applications
  • LED indicator when PTT active
  • LED-Enable (Disable) Jumper
  • RF Filter Capacitor (1nF)
  • Ground-Bridge Jumper
  • Standoff and mounting screw hole
  • In-board strain-relief hole
  • High-grade 2-layer PCB w/ solder-mask, beveled corner, and silk-screen
  • Overall board size: 11.5mm x 21.75mm
HTX-PTT3
Assembled HTX-PTT3 Kit
Kit includes:
  • PC Board with Pre-Installed Surface-Mounted Optocoupler, LED, & RF Filtering Capacitor (and current-limiting resistors)
  • 12-pin Female Header Connector (Raspberry Pi connector) -- Soldering Required
  • 2-pin Right-Angle 2.54mm Header Connector (PTT connector) -- Soldering Required
  • 2-conductor 35cm 2.54mm Wire Harness (to connect to Radio)
  • Detailed Assembly/Reference Manual (PDF)
 

Choose the option that's best for you:
 
IMG_7700

Includes Printed Circuit Board
(with Pre-Installed Surface-Mounted Opto-Coupler, Red LED, RF Filtering Capacitor, and Current-Limiting Resistors). 

Just add connectors.  All details included in the Assembly & Reference Manual.

Price: $4.50 (+USA Shipping)

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HTX-PTT3 Adapter Complete Kit

IMG_7775kit1

INCLUDES PC Board (with Optocoupler, LED, RF Filtering Capcitor), rPi Female Header, 2-pin PTT header and 35cm wire harness. 

See Assembly & Reference Manual.  Soldering required.

Price: $9.95 (+USA Shipping)

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Click HERE to read the Detailed HTX-PTT3 Assembly/Reference Manual



Schematic Diagram of the HTX-PTT3
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The HTX-PTT3 Kit installed and operating on a Raspberry Pi 3

IMG_7697








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Version 2:  Raspberry Pi to Radio Shack HTX-100 Push-To-Talk (PTT) Adapter
 
  • Easily and reliably connect any Raspberry Pi to your Radio Shack HTX-100 PTT line
  • Detailed Assembly/Reference Manual
  • Electrically-isolated optocoupler
  • Terrific for FT8, JT65, FT4, JT9, PSK31, RTTY, SSTV, and more digital modes using WSJT-X or any other digital communications applications
  • LED indicator when PTT active
  • Pass-through GPIO & IC Headers
  • RF Filter Capacitor
  • Ground-Bridge Jumper
  • Standoffs and mounting screws
  • In-board strain-relief hole
  • High-grade 2-layer PCB w/ solder-mask, beveled corners, and silk-screen
  • Easily works with most any Ham Transceiver
  • More...
IMG_7695
Assembled HTX-PTT2 Kit
 
Choose the option that's best for you:
 
IMG_7700

Includes Printed Circuit Board only. A complete parts-list and ordering-reference are included in the Assembly & Reference Manual.

Price: $2.50 (+USA Shipping)

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18-Piece HTX-PTT2 Adapter Kit

IMG_7775kit1

INCLUDES ALL 18 parts, including the PC Board, which are discussed in the Assembly & Reference Manual.  Assembly required.

Price: $14.95 (+USA Shipping)

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Click HERE to read the Detailed HTX-PTT2 Assembly/Reference Manual



Schematic Diagram of the HTX-PTT2
rev2schFINAL

The HTX-PTT2 Kit assembled, installed, and operating on a Raspberry Pi Zero W

IMG_7697
 







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Version 1: PiHat Ham Radio PTT Trigger/Isolator Board for Raspberry Pi
 
  • Use for keying Radio's PTT from Raspberry Pi
  • GREAT for WSJTX/FT8 and all other digital modes
  • Single-row, 6-pin connection to rPi (ODD Pins 1-11)
  • Uses rPi's GPIO17 as Serial Port's RTS (Mode ALT3) as controlled by WSJTX
  • Uses 4N25/4N25M opto-coupler
  • Use Optional 1nF capacitor (pads on board) for RF blocking
  • Shared ground-plane between radio and Raspberry Pi
  • Must be forward current from Radio's PTT line into board (ensure GND is correct)
  • High-grade 2-layer PCB w/ solder-mask and silk-screen
  • Easily works with most any Ham Transceiver
Caption

Example of a populated HTX-PTT1
 
IMG_7700Bottom

IMG_7700Top

Includes Printed Circuit Board ONLY.

Necessary parts you'll need to add:
  • 2.54mm 1x6 Female Header (to Raspberry Pi)
  • 4N25 or 4N25M
  • 390 Ohm (1/4W or 1/8W) Resistor
  • 1nF Capacitor (optional, for RF Filtering)
  • Connector/wiring to Radio.

Price: $1.50 (USPS Shipping)

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Schematic Diagram of HTX-PTT1
rev2schFINAL




 

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