on4aef schreef:Bedankt voor de info omtrent deze TRX.
Ik ben op zoek naar dergelijke type maar kreeg een aanbod van ééntje zonder de WARC banden,blijkbaar hebben die ook bestaan.
IK zoek specifiek ééntje met de WARC banden erop !
Alvast bedankt voor de tips 73's Jean .
Ik heb gelukkig wel de WARC versie
Op het forum van QRZ staat een mooi overzicht welk model de WARC banden heeft en welke niet:
Upon some further research (Internet), I did find these IMPORTANT FACTS
1. LOOK at the Production Lot Serial number of your FT-107 radio.
The FT-107M was made in at least 6 different production runs and some PC board assemblies were changed or updated between these production runs (like ANY other large manufacturing operation of that era)
Example: 01xxxx; 02xxxx; 03xxxx; 04xxxx; 05xxxx; 06xxxx
2. According to the FT-107M schematic diagrams, the major design changes occurred between production runs 2 and 3, then with production run 6 (addition of WARC allocations)
ONLY the LAST production run (serial numbers: 06xxxx and after) had WARC band capabilities
3. You CAN NOT upgrade the earlier FT-107M radios,
since 4 major printed circuit board sub-assemblies were changed
(RF. Local Oscillator, RF Motherboard; Protector).
4. The FT-107M uses a 5.0 - 5.5 MHz VFO, so 60 meter operation will not be possible.
==
The WWV/JJY position is tuned to 5 MHz (not 10 MHz that would be adjacent to 30 meter WARC band).
The WARC bands are three portions of the shortwave radio spectrum used by licensed amateur radio operators.
They consist of:
30 meters (10.100–10.150 MHz)
17 meters (18.068–18.168 MHz) and
12 meters (24.890–24.990 MHz).
