What should the value of the base resistor for Q2 be in the GPS-synchronised Clock Driver?

I am in the process of building the GPS-synchronised Clock Driver from VOL 42 No 2 Feb 2018 of EPE. I note that the design has recently been under development, I bought the "Rev C" PCB from the EPE PCB service and whilst populating it I noticed that the resistor for the base of Q2 is given in the circuit diagram as 270 Ohm but on the PCB silkscreen it is given as 4.7K Ohm.  Which is correct?
Furthermore the text of the article makes reference, on page 16 column three, to L1 the 47uH inductor as "The parts list provides two alternatives" but I do not see this in the parts list on page 18. Can you help?
Many thanks.

Hi Miles,

Thanks for the query which I will send to Editorial, as soon as I hear back I'll post any more information here. Please allow a short time for a reply to be received.

Thanks for your interest,

Alan W / EPE

hi milesi have built this up on a breadboard with a 270ohm and it works okalso i have a rev c board and the value is marked as 270 ohmbil

"bump"...can anyone else help with my questions?

milesi used a low tech method for the coili found a toroid in my junk box that looked about the samei used a wire that looked about the same sizei put a single layer of turns on the toroid if you look at the data sheet for the chip it mentions changing the induction to improve performance so i dont think it is criticali used one of those ten quid component testers and my coil came out at 50uh first timethe board also worked fist timehalf the fun is seeing what you what you can get to work with bits you have in your parts box
hope this helpsbill

Dear MilesI guess by now you have simply tried both values to see which worked, as I did. I was the same as you, confused by the difference from the schematic value for the base resister for Q2 and that printed on the silk screen of the Rev C PCB that was supplied to me when ordered. Thinking that the value may have been increased to conserve battery power, I fitted the 4K7 value. But when I eventually came to test the completed assembly the base current was insufficient to keep the transistor on so the GPS module was being powered on and off continually and I never got the 4 LED flashes. I changed the value to 270R and it worked immediately.So to answer this part of your question, there is no doubt that the value should be 270R.