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FT-817 Installation, No Amplifier 

If  using  the  FT-817  radio  “barefoot”  (no  external  amplifier),  connect  the 

ANT

  output  of  the 

FT-817  radio  to  the 

TX 

input  on  the  rear  of  the  Z-817H.  Then  connect  the  antenna  feedline  to the 

ANT

  jack  on  the  Z-817H.  Finally,  connect  the  supplied  CAT  radio  interface  cable  from  the  8-pin 

mini-DIN  jack  marked  “

Radio

”  on  the  rear  of  the  Z-817H  to  the  jack  marked  “

ACC

”  on  the rear 

of the  FT-817.  

Grounding  the  Z-817H  tuner  will  enhance  its  performance  and  safety.  LDG  recommends  that 

you  connect  your  tuner  to  a  suitable  ground;  a  common  ground  rod  connected  to  buried  radials  is 
preferred,  but  a  single  ground  rod,  a  cold  water  pipe,  or  the  screw  that  holds  the  cover  on  an  AC 
outlet  can  provide  a  serviceable  ground.  LDG  strongly  recommends  the  use  of  a  properly 
installed,  high  quality  lightning  arrestor,  such  as the LDG  SP-200, on all  antenna  cables. 

 

 

 

Once  the  cables  are  all  hooked  up,  turn  on  the  FT-817  radio,  then  press  and  hold  the  “F” 

button  on  the  front  panel  for  one  second,  to  enter  the  extended  menu.  Rotate  the  SEL  knob  until 
menu  #  14,  “CAT  RATE”  is  showing.  Rotate  the  tuning  dial  until  “38400”  is  displayed.  Now 
press and hold  the  “F”  button  again  to resume  normal  operation. 

Содержание Z-817H

Страница 1: ...AGE 1 LDG Z 817H 75 Watt Automatic Tuner for Yaesu FT 817 and Other QRP Radios with Amplifiers LDG Electronics 1445 Parran Road St Leonard MD 20685 2903 USA Phone 410 586 2177 Fax 410 586 8475 ldg ldg...

Страница 2: ...Installation 12 Hookup For Radios Other Than FT 817 12 Operation 12 Power up 12 Basic Tuning Operation Using With The FT 817 Radio 12 Toggle Bypass Mode 13 Initiate a Memory Tune Cycle 14 Force a Full...

Страница 3: ...ing it serial commands The Z 817H takes advantage of this interface to simplify the tuning process one button push is all that is needed in order to switch the radio to PKT mode transmit a carrier rea...

Страница 4: ...nd changing Power 6V power supplied from long lasting internal AA alkaline batteries Designed specifically for the Yaesu FT 817 transceiver Will also work with non FT 817 radios but without automation...

Страница 5: ...pecifications will definitely damage or destroy your Z 817H If your tuner fails during overload it could also damage your transmitter or transceiver Be sure to observe the specified power limitations...

Страница 6: ...e tuned configuration indefinitely even when DC power is completely removed Tuning memories are stored in non volatile FLASH memory The Z 817H has 2 000 frequency memories When tuning on or near a pre...

Страница 7: ...port is optional it is provided for those hams who would like to control their radio via computer This is a pass thru port to the RADIO port and is switched under software control by the Z 817H s mic...

Страница 8: ...xternal balun is required The LDG RBA 4 1 or RBA 1 1 is ideal depending on the antenna and transmission line used Always turn your radio off before plugging or unplugging anything The radio may be dam...

Страница 9: ...to be used ONLY with the following Yaesu transceivers FT 817 FT 817ND WARNING Do not attempt to use the Z 817H s radio interface cable with any other transceivers even if the CAT plug fits At best the...

Страница 10: ...mmends that you connect your tuner to a suitable ground a common ground rod connected to buried radials is preferred but a single ground rod a cold water pipe or the screw that holds the cover on an A...

Страница 11: ...rear of the Z 817H If your amplifier interfaces directly with the FT 817 s ACC port you may plug the amplifier s interface cable into the PC port on the rear of the Z 817H Amplifiers such as the Toky...

Страница 12: ...s does not correct the situation try turning the radio off and back on again Basic Tuning Operation Using With The FT 817 Radio The Z 817H is operated from the front panel TUNE button on the Z 817H Tw...

Страница 13: ...the Z 817H momentarily The Status LED will flash three times to indicate that the tuner is in bypass mode Press the front panel Tune button momentarily again to recall the previous tuner settings The...

Страница 14: ...tuning is complete the transceiver will return to the operating mode and power level previously set Place the amplifier back in active mode and begin transmitting You will notice that the radio toggle...

Страница 15: ...e the Z 817H to seek a better match than the match already stored in memory for this frequency To force a full tuning cycle first bypass the amplifier Then press and hold the Tune button on the front...

Страница 16: ...t key the radio during tuning Tuning operation is the same as for tuning with an FT 817 except that you must key the radio manually during the entire tuning process CW or AM modes work best for tuning...

Страница 17: ...ing cycle When the tuning cycle is complete control of the CAT interface is returned to the PC This procedure is completely automatic and is transparent to the user Simply hook up a PC and use the rig...

Страница 18: ...d and maximum transfer of power from the transmitter to the antenna occurs While the transmitter output circuit and transmission line are of fixed carefully designed impedance the antenna presents 50...

Страница 19: ...The LDG Electronics Z 817H automates this process No tuner will fix a bad antenna If the antenna is far from resonance the inefficiencies inherent in such operation are inescapable it s simple physic...

Страница 20: ...e proportional to RF power These two voltages are read by the ADCs in the microprocessor and are used to compute SWR in real time The relays are a latching type and so they consume no current when not...

Страница 21: ...ls just in case you lose this one When you are thinking about the purchase of other LDG products our website also has complete product specifications and photographs you can use to help make your purc...

Страница 22: ...urate and complete Ask your shipper for a tracking number or a delivery verification receipt This way you know the product arrived safely at LDG Be sure to give us your email address so our shipper ca...

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