Yes, that is the ICSP port where you can program it. But .... if indeed the ATTiny45 is put into 'USB' mode, it may be that also PB5 is used, that means that it can't be programmed 'normally', but you need to HV program it. (Google on it)
Posts by PA3FYM
-
-
Looks like the USB interface is made from an ATTiny45 , same as USBTiny programmer for e.g. other ATTiny's.
So perhaps George you can look into that direction?
-
Can you also transmit over there?
-
SP3OSJ Nice, but 'kooikerhondje' ? That sounds Dutch ; -)
-
Having laughed at IRC, I (re)viewed your movie twice, but I am not convinced. It's not the Bodnar (assuming you use(d) that) but I suspect the instability of the IC-402.
I think you need more samples with all LO's GPS locked and also accelerate en slow down etc ; -)
Anyway, creative and nice experiment! : -)
-
Japanese EME window is from 2424.000 - 2424.500 MHz (iirc)
-
DB2OS In my previous post I made an edit. This weekend is the ARRL EME contest 2.3 GHz and up. So it could be well an EME station 'just wanting to try' 2400 MHz instead of 2304/2320 MHz.
-
DB2OS I like your post, but I don't like its contents : -(
It was not a matter 'if' , but 'when' this should/could occur. Unfortunately you can't force 'the customer' (like for 'normal' transponder rentals) to reduce uplink power, but hopefully you and your team have sufficient measures to prevent TPX mute.
Edit: This weekend is the ARRL EME contest 2.3 GHz and up ....
-
That is a P-HEMT , haha : -)
-
Cap multiplier is used to denoise the powersupply, not to stabilize it.
-
I am a left handed (and forced ambidexter .. e.g. with scissors), so I am used to think 'different' (i.e. right handed) ;; -)
After all, a BC547 is not a 2N2222 ; -) -
2N2222 is also TUN ; -)
-
After some experimenting the following crystallized from mainly junkbox parts for the portable setup, see here.
It can be done with less components, e.g. omitting the xtal filter and 432 MHz LPF, but with this setup I got best SNR and P/N.
-
Keep up the good work George.
PS Don't forget to make some QSO's ;; -)
-
Very nice work Kurt !
-
Nice! What kind of power amp do you use?
It looks like a PE1CMO amplifier, so I reckon it's a PE1CMO amplifier ; -)
-
DK8KW Thanks, I was looking through a straw to reality ; -)
-
DK8KW Holger, where did you buy these feedthrough caps?
-
It'll be switched off soon. It was switched on to facilitate the monthly transmission of PI4AA last Friday.
-
https://eshail.batc.org.uk/point <-- click here.