Thanks for pointing that out Steve. Are there other receivers of
that vintage that might also suffer from deteriorating front end PIN diodes?
best wishes,
Nick
At 17:38 2018-09-27, STEVE wrote:
Drake uses PIN diodes in the front end switched band filters of the
R8 series (and at least the SW8); those diodes deteriorate over
time, significantly reducing sensitivity. Unless you had those
diodes replaced at your service it's likely that's why your Drake is
less sensitive than the Elad.
Steve
On 9/27/2018 9:34 AM, C B via IRCA wrote:
An OK morning for TPs in CO. I did a preliminary comparison between
my Elad FDM-S2 and the Drake R8A. As Bogey said "This could be the
beginning of a beautiful friendship". I started with comparing the
two JJ powerhouses, JOUB and JOIB. The Drake had weak, barely
discernable audio with both the ALA 1530ln and the NW Corner-Fed
loop. The Elad produced fair to good audio readily understandable
to a JJ speaker. I did not expect the difference to be so evident.
I had my R8A serviced a couple of years ago by a former Drake tech,
so while a bit long in the tooth, it's working fine. More to come....
This morning's results:
594 JOAK w/male in JJ weak (w/Elad, just a het w/Drake)
747 JOIB w/male in JJ good (w/Elad, weaker w/Drake)
774 JOUB w/male in JJ good (w/Elad, weaker w/Drake)
828 JOBB w/ weak audio (w/Elad, threshold audio w/Drake)
A decent assortment of hets.
73 and Best of DX,
Craig BarnesWheat Ridge, CO
Elad FDM-S2, Drake R8A, ALA 1530ln, NW Corner-Fed loop, Quantum Phaser
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Nick Hall-Patch
Victoria, BC
Canada
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