The Russian Federation is a member of CEPT (European Conference of Postal and 
Telecommunications Administrations) which has reciprocal operating authority 
with the US. The CEPT document outlining operating 
(http://www.erodocdb.dk/docs/doc98/official/pdf/TR6101.PDF) shows that the call 
sign prefixes to be used when visiting Russia are:

 

Russian Federation: R

Moscow & Other Regions: R3A

St. Petersburg: R1A

 

The document also states:

 

“When transmitting in the visited country the licence holder must use his 
national call sign preceded by the call sign prefix of the visited country as 
indicated in Appendices II and IV. The call sign prefix and the national call 
sign must be separated by the character “/” (telegraphy) or the word “stroke” 
(telephony).”

 

This manner of identification (location/home call sign)is also specified in the 
FCC’s rules:

 

97.119(g) When the station is transmitting under the authority of §97.107 of 
this part, an indicator consisting of the appropriate letter-numeral 
designating the station location must be included before the call sign that was 
issued to the station by the country granting the license. For an amateur 
service license granted by the Government of Canada, however, the indicator 
must be included after the call sign. At least once during each 
intercommunication, the identification announcement must include the 
geographical location as nearly as possible by city and state, commonwealth or 
possession

 

(Note: 97.107 = Reciprocal operating authority.)

 

So the net result of this is that if I went to Russia, I would ID as R/K4AC, 
R3A/K4AC, OR R1A/K4AC- NOT as K4AC/R.

 

Likewise, the only possible suffixes that would conflict with the FCC rules are:

 

KT For a control operator who has requested a license modification from Novice 
to Technician Class

 

AG For a control operator who has requested a license modification from Novice, 
Technician or Technician Plus Class to General Class

 

AE For a control operator who has requested a license modification from Novice, 
Technician, Technician Plus, General, or Advanced Class operator to Amateur 
Extra Class

 

KP or KH and a number For a Canadian amateur in the US

 

W and a number For a Canadian amateur in the US

 

Since there are no conflicts with an “R” in the suffix, it would be perfectly 
legal to identify a repeater in the US as K4AC/R.

 

On a side note, it is interesting how many Canadians don’t realize that they 
should be identifying with the W# after their call instead of before it. 

 

Doug

K4AC

 

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