[Motorola] Info on VHF amp TLD1693 AV

[Brian K. Gaskamp]

Eric are the TLD1692 still available that you know of.

Interesting stuff, Thanks for the info.

73,
Brian
----- Original Message ----- 
From: "Eric Lemmon" <wb6fly at verizon.net>
To: "'Discussion of equipment manufactured by Motorola'" 
<motorola at mailman.qth.net>
Sent: Sunday, June 10, 2007 5:39 PM
Subject: RE: [Motorola] Info on VHF amp TLD1693 AV


> Brian,
>
> The TLD1693 amplifier is designed to cover 150.8 to 162 MHz, and is by far
> the most common PA found on the surplus market.  The good news is that it
> will put out 100 watts continuously.  The bad news is that it usually 
> won't
> tune much below 149 MHz before it starts to become inefficient and a
> spurious signal generator.  The PA needed for the 2m band is the TLD1692,
> which is designed to cover the 132 to 150.8 MHz band.  There are more than
> 80 components that are different between these two amplifiers, and each 
> one
> of them is different for a good reason.  Converting a TLD1693 PA into a
> TLD1692 is an expensive and very time-consuming task, and many Hams who 
> have
> done it swear that they'll never do it again.  Part of the problem is that
> some of the coils and capacitors are unique to Motorola, and are no longer
> available.
>
> Some Hams who start the mod lose interest partway through it and think 
> that
> it "should work okay" with only some of the components changed.  Such
> partial mods all too often backfire, when the PA smokes after a few weeks 
> or
> months of seemingly flawless operation.  Of course, the smoked PA wasn't
> even close to flawless, but the owner didn't have the test equipment to 
> see
> what wasn't right.
>
> The TLD1692 PA was widely used in Canada, and are still available through
> Bro-Comm and other vendors.  The U. S. military used a lot of Micors in 
> the
> 138-140 MHz band, and the TLD1692 PAs may be found at surplus auctions.
>
> 73, Eric Lemmon WB6FLY
>
>
> -----Original Message-----
> From: motorola-bounces at mailman.qth.net
> [mailto:motorola-bounces at mailman.qth.net] On Behalf Of Brian K. Gaskamp
> Sent: Sunday, June 10, 2007 12:17 PM
> To: motorola at mailman.qth.net
> Subject: [Motorola] Info on VHF amp TLD1693 AV
>
> Hello everybody new to the list here.
>
> Does anybody have a link or good info on the above VHF amp.
>
> A friend of mine bought one of these recently off Ebay and wants to
> possibly use it on a 2m ham repeater, but neither he nor I can find
> any info on it.
>
> Thought maybe someone on the list here might be able to help.
>
> Thanks and 73,
> Brian
>
> KA5BKG
>
>
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