[Lowfer] 29.501 QRSS30 today

[Dexter McIntyre W4DEX]

jrusgrove at comcast.net wrote:
> What's the transformer turns ratio? Any idea what the inductance of 
> the loading coil is ... or how much L was required on 137 or 500 kHz 
> if using the same antenna? Antenna current? Inquiring minds want to know.
Jay,

I still can get an idea about the coil inductance for each band since I 
know the coil arrangement but I never tried to measure the current on 
any band until today.  While sorting through boxes that was stored when 
I left home after high school in 65 I found a pair of rf amp meters.   I 
used them with open wire feed line before I discovered coax.  Actually I 
knew about coax but old electric fence wire was free :)

I'll count the matching transformer turns later today.  Initially I 
think the input was 10t so it's now 12t turns.  After adding two turns 
to the primary I needed to add three to the secondary to get a nice 
scope match display.

https://www.dropbox.com/s/s2bnsh96shc33jp/rf-amp-meters.jpg

This is the present stack of coils:

https://www.dropbox.com/s/g1s8s3mczmzjfwx/29.501khz_coils.jpg

Initially I was using the 73 kHz coil plus two buckets of hookup wire 
nesting on over the other for tuning and additional inductance:

https://www.dropbox.com/s/cc1y8gl2drshq2l/DSCN1548.jpg

Now with the amp meters I should see which method of loading is more 
efficient. 

I changed to QRSS60 which you probably know by now.

Dex