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OUT  OF WARRANTY  SERVICE 

If  a  product  fails  after  the  warranty  period,  LDG  wants  to  help  you  get  it  fixed.  Send  the 

product  to  us  for  repair  any  time  you  like.  We  will  determine  what  needs  to  be  done  and based on 
your  instructions,  either  contact  you  with  an  estimate  or  fix  it  and  contact  you  with  a  request  to 
pay  any  repair  charges.  Please  contact  LDG  if  you  have  any  questions  before  you  send  us  an  out-
of-warranty  product for  repair.   

RETURNING YOUR  PRODUCT  FOR SERVICE 

Returning  a  product  to  LDG  is  easy.  We  do  not  require  a  return  merchandise  authorization, 

and  there  is  no  need  to  contact  LDG  to  return  your  product.  Visit  the  LDG  web  site  and 
download  the  LDG  Product  Repair  Form.  On  the  Repair  Form  tell  the  LDG  technicians  exactly 
what  happened  or  didn’t  happen  and  why  you  believe  the  product  needs  servicing.  The 
technician  attempts  to  duplicate  the  problem(s)  you  had  based  on  how  well  you  describe  it  so 
take the time  to be accurate  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  can  alert 
you  online  when  your  product  is  en-route  back  to  you.  Please  be  assured  that  our  staff  makes 
every  effort  to complete  repairs  ahead of our  published  wait  time.  Your  patience  is  appreciated.   

Repairs  can  take  up  to  six  to  eight  weeks,  but  are  usually  faster.  The  most  recent  information 

on  returning  products  for  service  is  found  on  the  LDG  website  under  Support,  then  Tech 
Support.  Send your  carefully  packaged unit  with  the Repair  Form  to: 

 

LDG  Electronics,  Inc. 

Attn:  Repair  Department 

1445 Parran  Rd 

St. Leonard,  MD 20685 

PRODUCT  FEEDBACK 

We  encourage  product  feedback!  Tell  us  what  you  really  think  of  your  LDG  product.  In  a 

card,  letter,  or  email  (preferred)  tell  us  how  you  used  the  product  and  how  well  it  worked  in  your 
application.  Send  along  a  photo  or  even  a  schematic  or  drawing  to  illustrate  your  narrative.  We 
like  to  share  your  comments  with  our  staff,  our  dealers,  and  even  other  customers  at  the  LDG 
website: 

http://www.ldgelectronics.com

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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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