Confused on Hermes Terminology

npope
Posts: 2
Joined: Tue Apr 11, 2017 10:25 am

Confused on Hermes Terminology

Postby npope » Wed Apr 19, 2017 10:57 pm

Sorry if this is a naive question, but I can't seem to find a definitive answer.

I have an Anan 10e, which I understand is a Hermes-based radio. However, I see firmware loads on the TAPR github listed for Hermes and the 10e/100b separately. I understand the 10e/100b is a 14-bit Hermes vs the 10/100 which is 16-bit Hermes.

So, finally the question: Does Hermes-labeled firmware apply to *all* the Hermes radios, or just the 16-bit? IOW, Is the "Hermes" firmware ok to install on the 14-bit radios, or do I need to stick to "14 bit Hermes" firmware?

-Nick

K4NGP
K5SO
Posts: 13
Joined: Mon Apr 17, 2017 2:20 pm

Re: Confused on Hermes Terminology

Postby K5SO » Wed Apr 19, 2017 11:38 pm

Hi Nick,

The answer is no you can't use Hermes firmware in the Hermes10E (ANAN-10E). These are two very different platforms, not simply due to the fact that they use different Tx DACs. They also do not use the same Altera Cyclone III FPGAs. The 10E FPGA has fewer logic elements in it (25,000 vs 40,000 in the standard Hermes) and is too small to hold the standard Hermes firmware.

73, Joe K5SO
npope
Posts: 2
Joined: Tue Apr 11, 2017 10:25 am

Re: Confused on Hermes Terminology

Postby npope » Thu Apr 20, 2017 1:43 am

Joe,

Thanks for the quick and clear reply!

-Nick

K4NGP
VE3YTZ
Posts: 4
Joined: Mon Apr 24, 2017 12:28 pm

Re: Confused on Hermes Terminology

Postby VE3YTZ » Sat Apr 29, 2017 11:08 pm

One big hurdle to getting a grasp on the HPSDR project is understanding the terminology. Can someone help me with a couple of (very) basic questions:

Can I assume the original TAPR Hermes was the 14 bit version? If not how does one distinguish a 14 from a 16 bit Hermes?

Can I assume that the original TAPR Hermes board used in conjunction with the Apache Labs ANAN-10 PA Kit (see https://www.gigaparts.com/pa-and-housing-kit-for-anan-10-anan-10-pa-kit-2.html) is simply a 14 bit Hermes board with a PA, and not, for the purposes of this board, an ANAN-10 or any other version of Anan radio?

Thanks for helping a newbie?

Greg

VE3YTZ
User avatar
w-u-2-o
Posts: 1875
Joined: Fri Mar 10, 2017 1:47 pm

Re: Confused on Hermes Terminology

Postby w-u-2-o » Sun Apr 30, 2017 12:31 am

The original TAPR Hermes is the 16-bit version with the larger FPGA. To identify it you have to look at the board and note the part numbers on the IC's in question.

An original TAPR Hermes with an ANAN-10 PA Kit is essentially an ANAN-10 (not an ANAN-10E).

73,

Scott
VE3YTZ
Posts: 4
Joined: Mon Apr 24, 2017 12:28 pm

Re: Confused on Hermes Terminology

Postby VE3YTZ » Sun Apr 30, 2017 12:37 am

Thank you, Scott. You have totally answered my question.

Very much appreciated

73

Greg/VE3YTZ

Return to “Hermes 14-bit (10E, 100B)”