Skip to main content

August 1, 2024. A move from DEI to DEA. Toilet Bowl Update

This posting is not about The Drug Enforcement Agency (DEA) but about Deliberative Engineering Assessment.


Thank You to the many who responded to my inquiry about my Toilet Bowl ring. Suggestions included using a pumice stone (one reader even had Bezos send me some) all the way to using muriatic acid. 

At this point (just like with homebrew ham gear that has gone awry) we first come up with a list of the possible scenarios to follow. (DEI part.) But critical to those possible solutions is the secondary impacts. Thus, our DEA is a risk assessment of the proposed solutions. How many times have we said let's just apply power only to see a mushroom cloud over the workbench and quickly following the smell of burnt parts. 

Scraping the bowl with pumice stone may clean the ring. However, will this scar the ceramic coating so that subsequent ring build up will appear as black mold. I would classify this as High Risk to several critical parts of your anatomy when seated at the bowl. The muriatic acid presents that same scaring problem but likely needs hazmat gear during the application including breathing apparatus and now that becomes a risk to life.

My DEA is telling me to get another piece of paper and to fully assess the risks of each of the proposed solutions. Suddenly the baking soda and vinegar appears the least risk as a starting place and the muriatic acid as the highest risk.

I will keep you posted. But we at least have a process to start our toilet bowl cleaning adventure.

TYGNYB

73's
Pete N6QW

Popular posts from this blog

January 26, 2024. A simple CW Transceiver/Transmitter

Cruise through the lower part of the ham bands bands and what do you hear? Well, FT-8 and CW. Often you will not hear any SSB stations yet go to the lower part of the bands, and it is a cacophony (I love that word) of bad sounding signals and some high-speed keying. Fast is not so much of the issue as is bad, run together and jerky keying. But none the less our hobby started there.    So, you could crank down your ICOM 7300 and watch the waterfall on CW or you could homebrew a radio. Actually, to do CW right you need more thought up front than you do with a SSB transceiver. Often, I will state that a CW Transceiver is much more difficult to build than a simple SSB rig. I published two articles in QRP Quarterly on CW transceivers and all I got was a yawn so maybe history will repeat itself.  Yawn!   30M CW Transceiver with RIT!   Of interest is that the LO is a Varactor tuned LC oscillator using a NE602. Look closely at the RIT circuit which is only activated on ...

August 30, 2024. A PNP 20M SSB Transceiver

Shown below is the Block Diagram for the 20M PNP SSB Transceiver steered in the  Transmit Mode . The components shown in the dotted block are relay steered so that the block module is single pass and amplifies in a single direction. The Block diagram show steered in Transmit.  Essentially the steering process works so that the IF Module input follows the Balanced Modulator on Transmit and then the input side follows the Receive Mixer on Receive. All done with some relays and a bit of RG174U coax. For those who count things in detail, this block diagram is not unlike what was used for the PSSST Transceiver which can be found on my website . Yes, a warmed over P3ST only using PNP devices. TYGNYBNT. 73's Pete N6QW

March 31, 2024. Happy Easter to those who celebrate this day.

What a great day to Binge on Chocolate and experience the pain of that filling that has been leaking.  I would be in that category with the leaking filling(s) had I not just spent an amount equivalent to one of the fancy new uptown appliance box transceivers on two filling repairs. Well at least I can binge on the Chocolate bunnies without fear of pain. Regrettably everything appears to have jumped in price including the price of parts. Well not so much the parts as the shipping costs.  That notably is seen in the eBay treasures. I spotted a nice heathkit DX-20 for about $50 and the shipping was $65. Likely it is a twofer with part being a way to in effect charge a higher price by inflating the shipping and in part by increased shipping costs. Shipping with insurance across the US was about $150 for this jewel and that was three years ago. 6AM on the Left Coast ~ 20M Easter Sunday! My only hope is the cost of Chocolate Bunnies remains steady although a pound of See's Candies f...