Interfacing a Yaesu MD-100A8X Microphone with a FLEX-3000/1500
Content provided by: Brad, AI0BP
I have a Yaesu MD-100A8X microphone and was interested in connecting it to my FLEX-1500.
The mic has a RJ-45 port and an 8-pin Foster jack on the base of the mic. For my [old] configuration, I had a conversion cable that connected the RJ-45 port on the mic to the 8 pin connector on my FT-1000. W0VB and I traced and mapped out this RJ-45 to 8 pin (Yaesu) conversion cable and applied to to the Flex RJ-45 pinouts:
As expected, the RJ-45 connections are identical. I built a straight through Cat5 cable (I'm a bit rusty - it only took 3 tries. ... but it was worth the laughs with Terry.) After final verification that cabling was correct, I plugged the mic into the FLEX-1500. I didn't spend much time on the up/down switch, but PTT and the mic are working. The audio sounds really good.
This KB article may reference additional files that are available on the FlexRadio Systems web site Downloads page. Please use the URL(s) below to download the referenced materials.
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KB Source Document(s):
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| System Dependencies | |
| Minimum PowerSDR Version: | N/A |
| Applicable Hardware: | FLEX-3000 & FLEX-1500 |
Content provided by: Brad, AI0BP
I have a Yaesu MD-100A8X microphone and was interested in connecting it to my FLEX-1500.
The mic has a RJ-45 port and an 8-pin Foster jack on the base of the mic. For my [old] configuration, I had a conversion cable that connected the RJ-45 port on the mic to the 8 pin connector on my FT-1000. W0VB and I traced and mapped out this RJ-45 to 8 pin (Yaesu) conversion cable and applied to to the Flex RJ-45 pinouts:
| Purpose | 8-PIN Foster (Yaesu) | RJ-45 (Yaesu) | RJ-45 (FLEX) |
| UP | 1 | 1 | 1 |
| Down | 2 | 2 | 2 |
| +5V | 2 | 3 | 3 |
| MIC (-) | 7 | 4 | 4 |
| MIC (+) | 8 | 5 | 5 |
| PTT | 6 | 6 | 6 |
| Ground | 5 | 7 | 7 |
| Fast | 4 | 8 | 8 |
As expected, the RJ-45 connections are identical. I built a straight through Cat5 cable (I'm a bit rusty - it only took 3 tries. ... but it was worth the laughs with Terry.) After final verification that cabling was correct, I plugged the mic into the FLEX-1500. I didn't spend much time on the up/down switch, but PTT and the mic are working. The audio sounds really good.
This KB article may reference additional files that are available on the FlexRadio Systems web site Downloads page. Please use the URL(s) below to download the referenced materials.
An Adobe Acrobat Reader may be required to open the file.You can download Adobe Acrobat from here.
KB Source Document(s):
None Referenced
