Calling all IC-R1 owners...

[TassieJay]

Hi all,
Creating what I hope to be the most definitive reference (review, restoration guide, modifications, technical information etc) article of the venerable Icom IC-R1, and I'd like to get some assistance from other owners.
If you are comfortable, can you reply - or PM if you prefer - your R1's serial number, blanking out the last four digits. Most only have a five digit serial number, so you'd be sending 0xxxx, 1xxxx, 2xxxx etc.
From this, it is hoped to work out:
1) the highest serial number / batch released of the IC-R1
2) were serial numbers 10xxxx and 11xxxx only released in Japan
and 3) trying to confirm rumours of slight circuit improvements in later batches.

Would definitely appreciate the assistance.
Thanks,
Jason

 

[bkantor]

I have 2:
1) 4xxxx
2) 0xxxx

Hope this helps

 

[LesWurk]

Have 7xxx series R-1. Needs new battery and is 5khz off frequency.

 

[TassieJay]

Thank you both for those observations.
bkantor, would you say that your later serial number R1 receives less interference than the earlier one, all other things being equal?