km1h@juno.com wrote:
>
> I never said the MLA-2500 was a work of art Rich. But in the 20 or so
> years I have worked on them I have NEVER seen a blown bandswitch,
> capacitor or other signs of parasitics. You can say what you want but
> that amp is one stable "mutha".
>
> The failures are usually in the PS, relay, fixed loading caps. Plus the
> occasional bozo that drives with 150W and cant understand why his tubes
> failed. OH Yes, and the CBer who tries to get 1500W out on AM.
>
> I also recommend to anyone that they increase the airflow by reducing the
> standby mode fan resistor value. I use 330 Ohms 10W in parallel with the
> existing one whenever one comes thru here.
>
> 73....Carl KM1H
>
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> FAQ on WWW: http://www.contesting.com/ampfaq.html
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> Problems: owner-amps@contesting.com
Hi gang,
I agree with Carl on this one. The MLA 2500 was/is a good amp. I ran
one for several years, only having to replace the filter caps and
rectifiers once. I sold it about 3 weeks ago, still in working condition
for about what I payed for it used. The biggest problem was the tube
prices went up and made un-attractable. It is still popular with the
folks going on expeditions because of its physical size. With the
modification's available using the Sevetlana tube its gaining popularity
again, especially with the VHF guys making single band 6 meter amps.
As I have mentioned before I have opened up new Henry's to find they
would not work out of the box. So I guess you can get a lemon in
anything.
Ron W4WA
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FAQ on WWW: http://www.contesting.com/ampfaq.html
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