Kenwood TS-50 Service Menu and Some Mods

Kenwood TS-50 Factory Adjustments Hold down NB and MHz keys + ower !N" Turn t#e Fre$uency Tun%n& kno' to c#an&e menu num'er"  A0  A1  A#  A'  A*  A+  A/  A  A"  A  AA  A  AC  A4

Conta ct author : Joe, DL6IB

Checksum diplay (version of YOUR installed pgm) R! center nitial value "0 $%&hift center nitial value "0 & carrier point nitial value 0 U& carrier point nitial value 0 &%meter ad,ust &1 (not $-) nitial value #. &%meter ad,ust & (not $-) nitial value ' &%meter ad,ust full (not $-) nitial value C# &%meter $- start nitial value 1 &%meter $- full scale nitial value CC R$%meter ad,ust lo2 (103) nitial value 'C R$%meter ad,ust middle (+03) nitial value "0 R$%meter ad,ust high (1003) nitial value 1 3rite to .prom 5y pressing U6 or 4O37 key8

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As t#e most o( you TS-50-)sers surely know* %t %s oss%'le to %ncrease t#e Med%um-ower* t#e ,ow-ower 'ut not t#e H%&#-ower-Sett%n&" H%&#-ower-Sett%n&" eason. T#ere %s no Tr%m-ot* %t %s a small SM/-es%stor" %t# t#at small Mod%(%cat%on you1ll &et a Tr%m-ot and t#e TS-50 %s a'le to run u to 230  outut w%t#out any ro'lems" 2" emo4e emo4e To-o4er To-o4er and #ook #ook out t#e %nternal %nternal seaker seaker"" lace t#e r%& to u* d%slay to you" T#e area you need %s closed to t#e le(t s%de o(

t#e -F%lter-Board on t#e ma%n-F-Board* w#ere t#e F%lter-Board %s screwed on" !n t#e 'oard %s r%nted on 1,1* 1M1* 1H1 and an arrow" A'o4e are two ots and two l%ttle 'lack c#%s* t#e r%&#t one 6SM/-es%stor7 %s 4ery closed to t#e second ot" 8" emo4e t#%s SM/-es%stor 6829* 20k7* w%c# %s located closed a'o4e t#e two ots (or Med and ,ow" :t %s a ;<= small 'lack c#%* marked w%t# 120>1" Be A" Make yoursel(e a small Board* 85 mm lon&* 3-20 mm w%de" At one end dr%ll a centered >mm-#ole closed to t#e ed&e o( t#e 'oard" 9" Solder one kon4ent%onal 9k@-es%tor 6stand%n&* a 5k or k3 also can do %t7 and a kon4ent%onal 20k-Tr%m-ot 6ly%n&7 %n ser%al order on t#%s 'oard" Make sure* you make no s#orts and 'u%ld t#e c%rcu%t as narrow as oss%'le and 4ery closed to t#e re4erse end* (rom w#ere you dr%lled t#e #ole %n - you later need 20mm sace at t#e dr%lled end?

5" onnect two two (%ne w%res 6len&t# aro" 80 mm7 at t#e ends o( t#%s l%ttle c%rcu%t and solder %t 6A0 Ams?7* a ower-meter* a dummy-load and sw%tc# %t on" No smokeD So you m%&#t #a4e done e4eryt#%n& all r%&#t E-7 3" us# a FM-arr%er on 29M#z and set t#e 1new1 ot on t#e des%red

outut" My TS-50 can do ma 235 atts 'ut : #a4e adjustet %t to 25020* so %t modulates (%ne 2>0 atts SSB w%t# t#e or%&%nal m%ke - w#at a d%((erence to t#at @0 'e(ore""" /on1t adjust %t to #%&#* t#%nk a'out your (%nals and (%lters?

T#anks to %m /uarte (or t#%s #oto" Note. =ou are mak%n& t#%s Mod on your own r%sk* : am N!T resons%'le?