Differences

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--- packet:9k6-rig-support [2024/01/14 23:40] – [The measurement setup] g7bcs
+++ packet:9k6-rig-support [2025/03/16 16:53] (current) – g7bcs
@@ Line 45: / Line 45: @@
 ===== The Rigs =====
-The three rigs I tested were the Tait TM8200, an Icom IC-E208 and a Yaesu FT-7800. The latter two had both failed to perform at 9k6. The former is well proven to work flawlessly. I had previously also tried a Yaesu FT-817 on 9k6 packet, unsuccessfully, more to have another sample than anything else, but since this radio is limited to 5W TX power, and also uses relays to switch the signal path from RX to TX, I didn't proceed further with this rig, since 9k6 packet will never be its forte.
+The three rigs I tested were the Tait TM8200, an Icom IC-E208 and a Yaesu FT-7800. The latter two had both failed to perform at 9k6. The former is well proven to work flawlessly. I had previously also tried a Yaesu FT-817 on 9k6 packet, unsuccessfully, more to have another sample than anything else, but since this radio is limited to 5W TX power, and also uses relays to switch the signal path from RX to TX, I didn't proceed further with this rig, since 9k6 packet will never be its forte. All rigs were tested in the 70cm band, at a frequency of 432.625MHz.
 ===== The Measurements =====
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 The top trace shows PTT being released at the end of a transmission (the RX frequency already has a modulated signal present). Bottom trace shows the demodulated output arriving from the rig as it recovers.
 {{:packet:ice208torxclose.png?nolink&400|}}
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-To be continued...
+===== Update =====
+Some time after writing this page I tried the IC-E208 again and found that it actually worked perfectly at 9k6. I didn't record the NinoTNC firmware version that I had used for my initial experimentation and I believe at some point it received an update to make it tolerant of inverted modulation polarity. This might mean other radios are now good candidates for 9600 IL2P links where they weren't before.