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[CCinPA]

Update: I gathered up your suggestions; Planning to work on them today. 
Then, a friend reminded me that I have a box of X-10 stuff from one of my house-moves... He was correct. 
In the box I found two Power-house RR501 transceivers.  I decided to eliminate/isolate.  I hope I did not over-simplify this...
I plugged the RR501 and the TM51 into an outlet in my garage.
Bottom-line… Neither unit would activate after moving 10-feet from them.  It seems to me the common-denominator is the KR19A transmitter?  Checked the new battery again…Fully charged.   
 The HR12A PalmPad Remote Control is a bit large/clumsy.  Are there any other transmitters other than the HR12A and the KR19A?

[dhouston]

Are there any other transmitters other than the HR12A and the KR19A?

KR22A

[CCinPA]

i need a nap... The kr22a is the transmitter I think might be the culprit. 

[Brian H]

The RR501 and TM751 are both X10 RF to power line transceivers. You should not have both of them on the same circuit at the same time.
The TM751 is not polite and will step on any other X10 signals on the power lines. As it has no power line receiver.
The RR501 also has a power line receiver in it and in theory should wait until the TM751 has completed its commands.

Will the KR19A turn the RR501's or TM751's internal relay on and off directly? If you are directly near it and not through the cinder block wall?

[Tuicemen]

 The KR19A  
I prefered over the KR22A as far as flobs were concerned. There is a security flob which I believe only works with the X10 security consoles

[Tuicemen]

I did  a passive antenna mod on a KR22A credi card flob once and was able to improve its transmit range however it also made it very directional.  You could try a pasive antenna  mod on the transceiver as well.

[brobin]

Plug one transceiver into an indoor outlet close to wherever you typically use the remote - same room is best.  Now plug the various lights into modules without regard to distance from the remote.  The modules do NOT receive RF signals from the remote so RF range is not an issue. The transceiver receives the the RF from the remote and the transmits the X10 signals (hence the term transceiver) out on the powerline to the modules throughout the house.  The only RF range that matters is the distance between the remote and the transceiver.

[CCinPA]

Success!

I dug thru my box of X-10 goodies and found a "X-10 Wireless Key Chain Remote Control KC674".

Works like a charm in the original layout. 

Couldn't have done it without all your help! 

Thanks!

[Tuicemen]

Glad you found an old flob that works.
Many times newer isn't better.

[Brian H]

Thanks for the update and happy it is now working.
The KC674 may have a stronger RF output or antenna orientation.
I vaguely remember having one of that model but it is not on my list of modules I own.

[bkenobi]

I have one of those in a box I picked up a few years back from someone.  I never considered using that since it's about as big as old school garage door openers, but then if it has a larger antenna that might explain the size.   

[Brian H]

It also has a House Code Dial and slide switch Unit Codes 1-2 or 5-6.
Not programmed with the button and LED flashing sequences.

[dave w]

I have one of those in a box I picked up a few years back from someone.  I never considered using that since it's about as big as old school garage door openers, but then if it has a larger antenna that might explain the size.   

The two AA batts can probably dump more current that the lithium coin cells also. Like Tuicemen said ….newer ain't always better. He has better grammar.