Differences between PB-010AA and PB-010AB ?

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cb4ever104
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Differences between PB-010AA and PB-010AB ?

Post by cb4ever104 »

Hi All .

That's the question . Anyone have the answer ?

Sammy
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Re: Differences between PB-010AA and PB-010AB ?

Post by M1JWR »

Can't answer the question but i was always led to believe the AA version
was a tad better, i will leave the technical part to those who know why if
thats the case.
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Re: Differences between PB-010AA and PB-010AB ?

Post by 14CS06 »

ssjenkins wrote:Hi All .

That's the question . Anyone have the answer ?

Sammy
Hello Sammy

The answers are here

PThe PB-010AA Chassis was the First Cobra 148 GTL-DX MK2 version produced. There are a few notible differences between the AA and AB Chassis. The below picture is of a 010AA Chassis, notice how the 3 tuning pots VR3, VR4 & VR6 are all orientated the same way round.

http://www.cobraworxshopz.com/cobra_148gtl-dx_13.html

@+
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George EI7KO
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Re: Differences between PB-010AA and PB-010AB ?

Post by George EI7KO »

Lol.....cobbledtogetherfcukedupslopz. What would he know????
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Re: Differences between PB-010AA and PB-010AB ?

Post by warhorse »

Depends what mode your talking about if eprom'd... standard all the way if for a mk1 aa board if for ssb! i mean front end on a mk1 is well known to be sensitive standard i never liked the delay in a mk 1 when converting beep to on/off! - just for starters!
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Re: Differences between PB-010AA and PB-010AB ?

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warhorse wrote:Depends what mode your talking about if eprom'd... standard all the way if for a mk1 aa board if for ssb! i mean front end on a mk1 is well known to be sensitive standard i never liked the delay in a mk 1 when converting beep to on/off! - just for starters!
The mkII has the PB-010 . The Superstar 360s I have allhave the AB variant and I was just wondering what the difference was between them .

Sammy
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Re: Differences between PB-010AA and PB-010AB ?

Post by 163TM847 »

The front of the board differs slightly from AA to AB, IE: Beep circuit but apart from that not much else at all.

I have seen a few AB's where both sets of crystals are present with 6 tuning inductors, But not for a long time.

warhorse wrote:i never liked the delay in a mk 1 when converting beep to on/off!
What do you mean, Got me a bit lost there.
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Re: Differences between PB-010AA and PB-010AB ?

Post by warhorse »

From what i remember after the beep mod the dekey is still there but no beep just like its still going through the switching ~ cycle! never noticed that in a mk2 Ab board!
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Re: Differences between PB-010AA and PB-010AB ?

Post by 163TM847 »

warhorse wrote:From what i remember after the beep mod the dekey is still there but no beep just like its still going through the switching ~ cycle! never noticed that in a mk2 Ab board!
Then its being switched wrong, I have seen it done before in the PC-879AB where one leg of TR33 is switched to ground which only mutes the beep tone, Simply switching the one leg of C146 [beep timer] will knock the beep off completely with no delay.
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Re: Differences between PB-010AA and PB-010AB ?

Post by cb4ever104 »

Black Spirit wrote:The front of the board differs slightly from AA to AB, IE: Beep circuit but apart from that not much else at all.

I have seen a few AB's where both sets of crystals are present with 6 tuning inductors, But not for a long time.
Thanks Nick . That's good to know .

Sammy
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Paul aka "Sammy". (108) PY60 Old Paisley DX Group (RIP Rab Markie)
Ex GM0 , now EA5 .
Handle "Fortune Hunter" back in "the day"
Radios ....? Anything that says "TAIWAN R.O.C" on the back.
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