The radio amateur SV2CZF makes some very interesting antennas and sells them on his website for a small fee: https://www.sv2czf.com
For a long time I had been tempted by the MWA30 (https://www.sv2czf.com/mwa30.html), which is a very small portable mini-whip that runs on battery power. Unfortunately, mini-whips must be well grounded, so I decided to use his latest antenna, the SAR32M. This one works even without good grounding and you can connect an antenna via a whip antenna like a telescopic or a loop.
Reception from 50 KHz to 175 MHz
Built-in rechargeable battery which can be charged via Micro USB port (approx. 10 hours battery power)
A normal whip antenna, like a telescopic antenna, can be connected
A loop can be connected
A loop and a telescopic antenna can be connected in parallel
Impedance adjustment for shortwave
Built-in Pre Amp for amplification
Only suitable for receiving, when transmitting the SAR32M will be damaged directly
How to order
The SARM32M is already shown on the homepage, but cannot be ordered through it yet.
By default, the SARM32M is delivered with BNC connectors. But you can also ask SV2CZF to install SMA connectors
Antenna 94,99 € and shipping 6,99 €. The antenna is shipped in a bubble envelope and passed customs without any problems for me
The shipping took for me from Greece to Germany only 5 days.
Experience in practice
I use the SAR32M mainly with my Malahit DSP2. Here, the SMA32M with the same 70 cm telescopic antenna, depending on the frequency range, can get out again about the 3 S-stages (for example, in the 40 m band). Unfortunately, the reception breaks in from about 50 MHz, so that e.g. 2 m works better without the SAR32M in between.
On the other hand, if you connect a loop, the SAR32M shows its potential. You can compare it well with the MLA 30 +, which also provides very good reception results. The loop made of wire, which is supplied with the MLA 30 +, also fits optimally to the SAR32M. However, any piece of wire or cable can also be used.
The battery life is about 3 times longer than the Malahits DSP2 with a 3400 mah cell. The great thing is that this makes the SAR32M perfect for portable use.
Here are two examples on the 40m band, received with the SARM32M and a 70 cm telescopic antenna. First CW:
Again with SSB with only a 70 cm telescopic antenna:
The performance is very very good.
On Facebook I found the following picture of the inside view. The legs are firmly glued and usually break off when you try to open the lid (yes, I tried 😉 )