The manual that has been put up on the HyGain site is labelled
TH6-DXX.pdf but when you open it you will see that it's headed TH6-DX
Thunderbird, so things are not quite what they seem. With the change
of ownership I suspect there's nobody there who knows the detailed
history of these antennas.
HyGain replaced the 'TH6-DX Thunderbird' with the 'TH6-DXX Super
Thunderbird'. The main change was the mast to boom bracket. The DXX
is the antenna I have; it came with, and its manual shows, the cast
aluminium boom bracket, just the same as on the TH7. I seem to recall
that the 204BA experienced a similar change to its boom to mast
bracket but I'd have to dig out my old HyGain catalogues to check.
My comment about the posted manual was on the basis that they
probably sold many more DXX than they did DX and, in any event, being
the newer of the two (even if it is almost 40 years old!) there would
be more of them about.
How many of today's antennas, expensive as they are, will still be
about in 40 years. I'll wager not many.
At 19:17 15/10/2009, Jim W5IFP wrote:
>Perhaps you are referring to the TH7-DXX boom bracket. The TH7-DX uses a
>side saddle bracket and perhaps that bracket may have been furnished in the
>kit to convert the TH6-DX to a seven element antenna. The TH7-DX manual
>refers to the TH7-DX as the Super Thunderbird.
>I acquired the TH6 and TH7 PDF manuals from the HyGain site several years
>ago. Please note that the manual was titled TH6-DXX.PDF. So perhaps HyGain
>never actually updated the manual. I also have the TH7-DXX manual if anyone
>is interested. It is titled TH7-DXX.PDF, but same as the TH6 manual it only
>shows TH7-DX in the manual title.
>Confusing...Yes. However its a great antenna. I have had mine for about 25
>years and it was a freebie after a tornado took it down along with the
>tower. I re-built it and have enjoyed its great performance since day one. I
>replaced all the trap caps again about 13 years ago.
> * 73's Jim W5IFP *
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