Mayhem Signature Edition Portapack H4M Transparent Shell with Speaker and 2500 mAh Lithium Battery

The Mayhem Signature Edition Portapack H4M represents the latest evolution in the Portapack lineup, focusing on improved usability, performance, and everyday practicality. Built for advanced users and enthusiasts, it features refined hardware, a transparent shell, integrated speaker, and a high-capacity 2500 mAh lithium battery.

Key improvements and features include:

Single power on/off switch that fully cuts power when the device is off, eliminating phantom battery drain and preserving battery life.
Advanced battery management IC with real-time monitoring of battery percentage, voltage, current draw, and charging status.
Matte display for improved outdoor visibility and reduced glare in direct sunlight.
Flat 360-degree knob button inspired by the classic click-wheel design, offering precise and intuitive navigation.
Dedicated GPIO port enabling future user-developed add-ons and hardware expansions.
Improved charging performance for faster and more efficient recharging.
Built-in microphone with hardware toggle, allowing quick switching between the internal microphone and external audio devices.
Automatic audio switching that seamlessly changes from speaker output to headphones when plugged in.

This product includes only the Portapack H4M unit with transparent shell, integrated speaker, and 2500 mAh lithium battery. It does not include a HackRF board.

The HackRF board must be purchased separately, or you may choose the complete bundle available here: Complete HackRF + Portapack H4M Mayhem Signature Edition package.

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Anonymous

02/16/2025

5

They helped very wel and friendly.

Advantages

Great product, what makes a HackRF even more valuable.
I can recommend the PortaPack, so you can go portable and to alle the nice things HackRF can do, without the need of a computer.

Disadvantages

I had a problem with the PortaPack, but it was solved very correctly by SDRStore.
Remember only that they're very busy, so be patient and everything comes allright.

Anonymous

02/04/2025

5

Good trustworthy shop to buy, with great service.

Advantages

Great addition for the HackRF One.
It gives many options, tools etc, without having a computer at hand.
Had a little bit problems with my Portapack but SDRSTORE solved it perfectily.
They're very busy, so be patient for there answers.
For the rest, I'm very happy with it :-)

Disadvantages

Only thing what is, for me, a minor is the dialwheel, it feels a bit "flimsy", and personaly I would prefer a dial knop instead of a wheel.

Ask our team about this product, or start a discussion in the community.

3 answered questions

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Frequently asked questions

Reviewed by SDRstore

Answers prepared with AI from staff replies and reviewed by SDRstore.

Which HackRF One hardware revisions are compatible with the Mayhem Signature Edition PortaPack H4M?

The Mayhem Signature Edition PortaPack H4M is compatible with most HackRF One boards, including the R10-P1 and older revisions. It does not require the R10C revision.

Verified by SDRstore · 11/01/2026

Is the H4M and transparent shell compatible with early pre-v6 HackRF clones?

Compatibility with very early pre-v6 HackRF clones from around 2014 cannot be guaranteed. Older clones may differ from the later standard HackRF One layout in header alignment, PCB dimensions, and mechanical fit, so the transparent shell may not fit correctly. The H4M and shell are best suited for later standard HackRF One layouts or newer compatible boards.

Verified by SDRstore · 11/01/2026

Customer questions

Pepijn03/18/2026 Answered

I have an old version. Pre v6, clone from 2014. Would that fit? https://imgur.com/a/E7Vo932 Kind regards, Pepijn

SDRstore Support SDRstore reply03/18/2026

Hello, Thank you for your question. Based on the photo, that appears to be a very early pre-v6 HackRF clone from around 2014. For boards of that type, compatibility with the Portapack H4M is unfortunately not something we can guarantee. The main issue is that older clones often differ from the later standard HackRF One layout in terms of header alignment, PCB dimensions, and overall mechanical fit. Because of that, the transparent shell especially may not fit correctly even if the board looks similar. So in this case, we would not recommend assuming it will fit. The H4M and shell are best suited for the later standard HackRF One layout / newer compatible boards. Kind regards.

Joachim Ażgin-Gontarek12/01/2025 Answered

Dear Sir/Madam I would like to ask if this version of PortaPack (MYHM-HCKR-JM6WGO) is compatibile with HackRf R10-P1. I'm PhD student of Warsaw University of Technology in Poland. Am I eligible for student discount? If yes what is amount of this discount and what documents i should sent do receive this discount? Kind regards, Joachim Ażgin-Gontarek

SDRstore Support SDRstore reply12/04/2025

Dear Joachim, Thank you for your message and for your interest in our Mayhem Signature Edition Portapack H4M. Compatibility with HackRF R10-P1 Yes, this Portapack H4M (code: MYHM-HCKR-JM6WGO) is compatible with the HackRF One, including the R10-P1 hardware revision. You can use them together without any issues. Student / Academic Discount As a PhD student at Warsaw University of Technology, you are eligible for our academic discount. Discount amount: 7% What we need from you as proof: A valid proof of affiliation with Warsaw University of Technology, for example: Student ID (both sides if relevant), or Current enrollment/confirmation letter from the university, or Any official document clearly showing your name and affiliation (e.g. PhD student status or staff card). Please send the proof from your academic email address if possible (e.g. ending in .edu, .pw.edu.pl, or your university’s official domain) to help us verify more quickly. Once we receive and verify the documents, we will: Generate a personal discount code for you Kind regards, The SDRstore Team

vcatpt05/24/2025 Answered

Is this comaptible with hackrf without being r10c revision?

SDRstore Support SDRstore reply05/24/2025

Yes, the Mayhem Signature Edition PortaPack H4M is compatible with the HackRF even if it's not the R10C revision. It works with most HackRF One boards, including older revisions.

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