Do now know if I would trust some of the websites you listed....
Alltransistors.com has a copyright date on it of 2005, and the site just
"looks" old, did not pull all the sites up, but just by the names I would
question the real availability of what they have listed. E-Bay would not
be a source for a company in the business of repairing, but that is just my
opinion.
Unfortunately this is going to be how things go in the future...
semiconductor companies are only going to produce items they can sell in
high volumes, and we are going to see more and more rigs put out of service
because the parts have become unobtainium... and with SDR rigs most likely
using (or will use) high pin count FPGAs with Ball-Grid footprints... what
a nightmare we are going to be in...
On Thu, Nov 6, 2014 at 12:42 PM, Wade Staggs <tvman1954@gmail.com> wrote:
> *Hello All,*
> * With way too much time on my hands. We decided to
> take a look for the Mixer Board Parts. Below is what I found. Could someone
> please check my work, that we are referencing the correct parts/board. This
> is the Semiconductor list from the 81595 Xtal OSC - L.O. Mixer Board.*
>
> *.................Diodes ......................*
> *1. D1-D8 and D35-D44 Part # 1N4148 Available from Newark.com*
> *2. D9-D22 ..... BA482 Equivalent to NTE 555*
> *3. D-23 ..... Available from Newark.com*
> *4. D25 .......BAT41 Available from Arrow.com*
> *5. D35-D44 ..... BA482 Lot of 10 from Ebay $13.10 *
> *6. D25 ..... SVC321SPA Equivalent to NTE618*
>
> *...............Transistors .......................*
> *1. Q1 ... MPS5179 ...Onlinecomponent.com for $0.90 cents each*
> *2. q8 ... MPS3866 ... Alltransistors.com*
> *3. Q3 Q4 ... MPS6514 realcomponents.com <http://realcomponents.com> 180
> in
> stock*
> *4. Q5 ........2N5087 Digikey.com*
> *5. Q2-Q6-Q7 ... 2N4124 Newark.com*
> *6. Q9 ... J310 ... Equivalent to NTE 2902*
>
> *................... Integrated Circuits ...................*
> *1. U1 ... MC1496 ...Ebay.com ... Lot of 10 for $12.21 Free Shipping*
> *2. U2 ... UDN2985 Alibaba.com 10,000 In Stock. *
>
> *This complete Parts Search took less than 15 Minutes. If the Rig is
> working but just has Noise? It seems that these available parts should be
> Most Helpful. I am now just wondering what parts the factory can't get? And
> maybe the NTE Equivalent Diodes will not work? But.... we have had good
> luck in the past with the NTE replacements. Also, this was just a Really
> Quick Google Search. All Resistors and Capacitors should be Standard parts.
> Chokes, Coils and Transformers should be Good if the Rig is Operational.
> The IC sourced from Alibaba.com is a Chinese Website. The minimum order is
> 5 pieces.*
> * So, there are my quick search results. Nothing
> further to add. *
>
> * 73 to All from
> Wade/KJ4WS*
>
>
>
> On Thu, Nov 6, 2014 at 9:04 AM, <wt4t@reagan.com> wrote:
>
> > Sent my OMNI_VI to ten tec two weeks ago. Just was not running up to
> > snuff,like it used to. Heard from them today. the rig was way out of
> > alignment and also the bandpass and bfo. They told me the noise I had in
> > the rig was caused by the mixer board and that they have no parts left to
> > be able to fix the mixer board. If I found another mixer board ,could it
> be
> > swapped out for the noisy board or is there realignment going to be
> > required? or other changes made to the radio.
> > If a swept,any one have a good board they would part with?
> > 73
> > dale wt4t
> >
> > _______________________________________________
> > TenTec mailing list
> > TenTec@contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> >
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