MFA Helsinki :

 

no recordings available

 

this PPC was issued to Lars Lundström in 1974
in 1986, I received this verie on PPC from the foreign ministry (rb)
this friendly mail about the Nicosia embassy gives an outlook on the finnish diplomatic radio system (rb, 2013)
here a very recent answer from the collection of Patrick Robic (2014)

 

this is a listing of all embassies, so you know what to look for

 

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Callsigns:
HKI
OHU20

 

Frequencies Voice:
10746
10748
13434.5
14693
14694.5
15727.5
15871.5
17419.5
17444.5
17562.5
17603.5
18181.5
18192.5
18595.5
18761
18762.5
19315.5
20125.5
20177.5
20187.5
20262

 

Frequencies Radioteletype:
5843.5
7778.5
10737.5
10737.8
10747.5
10886.5
13914.5
14662.5
14693
14694
14694.7
14695
14710
14818
14926.5
14955.5
16135
17576.5
18761
18762.5
18842.5
20262
20263.5

 

Systems used:
50 Bd
ALE
G-TOR
?Burst-301,5Bd