[Boatanchors] Parts, materials, and methodologies

[rbethman]

One can used quality G-10 PCBs and then support them with a 1/2" plate 
of Cloth layered Phenolic Sheet.

This type of Phenolic sheet is "still" used in power plants.

I've got some here and do use it.  The only place I don't is in my 
Microwave circuits ans systems.  That particular system of circuits uses 
FR4 PCBs.  It becomes critical in the GHz circuits, along with layouts, 
striplines, and cutoff strips to eliminate the frequencies undesired in 
these.

Each type of system requires different materials and methods to achieve 
the desired results.

So don't discard other methodologies, and materials!

Example of this:

>     There are many workable solutions to the RF connections to and
>     from your synthesizer, the UT-141 is inconvenient to bend but good
>     for loss at microwave and very good for leakage compared to single
>     shielded RG58A. LMR cables have lower loss and less leakage. I
>     don't think that's a problem but I don't know your planned uses
>     either. 

I am using UT-141, LMR-400 cabling, and in very few instances, RG-316 
and RG-174.

Now back to my Tensolite 2-SMSM-86SFD cables and the test/assembly 
boards and the GHz range of frequencies.  My start point is aVDS-6000 
Frequency synthesizer that runs from 1.13-1.76 GHz .5 GHz, and then into 
a double balanced mixer to double that output. Every single piece of 
this is Surface Mount and is very tiny, tedious, requires an SMT 
Station, and requires frequent breaks to rest eyes, brain, and hands!

Regards, Bob - N0DGN

On 1/12/2016 9:38 PM, Rob Atkinson wrote:
> yes the sad much maligned "value engineering" days when Gates went
> super cheap to be affordable to 1 KWs on a budget.  Compare it to the
> BC1-F.  They aren't on the same planet.
>
> 73
>
> Rob
> K5UJ
>
> On Tue, Jan 12, 2016 at 5:26 PM, Sheldon Daitch <SDAITCH at bbg.gov> wrote:
>> Even Gates/Harris did that on the audio driver boards and perhaps the RF driver boards of the BC-1T series transmitters.
>>
>>
> __