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What is the supply voltage for the QDX?
Wondering if the 4.1 watts shown is the output during or after tuning (or both). I assume both, unless you reduce the power output somehow. Reason for asking: It's been mentioned that possible extreme SWR excursions during tuning (30m?) can damage the PA transistors, if they are already dissipating their power limit before tuning starts. 73 Andy WM8Q |
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Hi Andy,
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On that shot, the supply V was 12.2V and the 4V was after tuning.? Power out fluctuates as it's tuning, according to the readout.? I'm one who reported about burning up the BS170s and IC5 --and then posted a photo of the burned lead on the BS170 ;) .? And yes, I really do think it was because I was using like 1.8/higher SWR, it turns out.... I've spent the last two weeks using the LDG AT-100ProII tuner.? Works great, tunes everything on my OCF to about 1.0.?? But the little AT-10 was too tempting and looked like a nice option for portable.? Tuning not as broad as the LDG of course, but decent.?? The good news, the little AT-10 tunes quickly.? And I have more spare BS170's and IC5's ;)? AND it's such a perfect pairing to the QDX.? Anyhow, thought it was worth a post.? I ordered from eBay, and used the "recommended seller" that was mentioned on here a couple of weeks ago.? 73, Mark M8MH What is the supply voltage for the QDX?Wondering if the 4.1 watts shown is the output during or after tuning (or both). I assume both, unless you reduce the power output somehow.Reason for asking: It's been mentioned that possible extreme SWR excursions during tuning (30m?) can damage the PA transistors, if they are already dissipating their power limit before tuning starts.73AndyWM8Q |
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Speaking of the ATU-10, I have a like new, tested good copy for sale. Reason for selling: I decided I like my ZM-2 manual tuner better. These are around $115 shipped from China - followed by the ensuing torture waiting for it to arrive, and not knowing if its a good copy. I am asking $100 Shipped to lower 48 US only, Price is Firm. Happy to take Venmo, Zelle or if you must insist, PayPal. Please reply to me directly and don't?clutter the group.
73 de k1jbd bammi good on QRZ :-) |
WS1M - bammi