Hello Farhan
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My feedback on your question...
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Iambic A with a delay of 350 works for me safely up to 28 wpm, mistakes up to that and with higher speeds are mostly made by myself ;-)
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Straight key works with slow keying and no pauses between words, but with an external K3NG keyer only from the third letter onwards, a lot is lost before that. If I key VVV in a row, the first 2 Vs are incomplete. This happens after every T/R switching and regardless of the speed.
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The T/R switching is generally too slow and makes full BK, DXing and Contesting very difficult if not impossible. But keying without BK operation and iambic A is now possible.
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These are my observations regarding cw operation with my zBITX-2501051. Hope this is of any help.
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73, Gerald - HB9CEY
