Category Archives: Radios

The Wacky and Rare Toshiba RP-2000F Now on Ebay

Is this a receiver designed by MacGyverThe Toshiba RP-2000F was a portable radio designed for the 1970s Japanese BCL (Broadcast Listener) and is not often seen on the used market.

A fine example of this model is on the USA Ebay site right now: https://www.ebay.com/itm/TOSHIBA-RP-2000F-Shortwave-Radio-Full-88-108-FM-Dial-Great-Cosmetic-Condition/253300518829

 

The $495.00 starting price is steep, but probably inline with the radio’s rarity and condition. Do any SWLing Post readers have first-hand experience with this model? How does it perform? Let us know in the comments below!

Guy Atkins is a Sr. Graphic Designer for T-Mobile and lives near Seattle, Washington.  He’s a regular contributor to the SWLing Post.

Pete reports new developments with the uBITX transceiver

Many thanks to SWLing Post contributor, Pete Eaton (WB9FLW), who writes:

Last March, Ashhar Farhan (VU2ESE) the designer of the very popular BITX20 and BITX40 series of mono-band HF Transceivers announced a new low cost rig called the uBITX (micro BITX) a full blown 80-10m 10 Watt SSB/CW Transceiver. Now comes word that after many months of very hard development work by Ashhar this much anticipated Rig will soon be available.

For those not familiar with the project this is *not* a kit, rather like its sibling (the BITX40) it consists of two assembled and tested Circuit Boards. The RF board measures 5.5 x 6 inches and a second small plug in daughter card that takes care of the digital portion of the design including the 2X16 LCD, Arduino Nano, and Si5351 which are used in the VFO.

Add a cabinet, knobs, and connectors and you have a full blown HF Rig! An added plus is that except for the Gerber PCB files everything else (including the firmware) is Open Sourced!

The original description can be found here:

http://www.phonestack.com/farhan/ubitx/ubitx.html

Farhan has just released the Firmware, Schematics, and Wiring Diagram for the production version on GitHub

Arduino Sketch:

https://github.com/afarhan/ubitx

RF Board Schematic:

https://github.com/afarhan/ubitx/blob/e481ea2a2457fc4e7be7a6a4bc9a0fba12bf2cde/ubitxv3.pdf

Digital (Raduino) Board Schematic:

http://www.phonestack.com/farhan/ubitx/raduino.pdf

Wiring Diagram:

https://github.com/afarhan/ubitx/blob/e481ea2a2457fc4e7be7a6a4bc9a0fba12bf2cde/ubitx_wiring.png

Farhan has a social conscience as well giving several local ladies much needed employment for final assembly and checkout of the Rigs.

There are still a few final tweaks being done to the design so pricing is still to be determined. But if it’s offered at a similar price point as his earlier Transceivers it should sell like hotcakes!

For the latest info check out the BITX User Group at:

https://groups.io/g/BITX20

Wow!  Amazing project!  Thanks for the tip and updates, Pete!

Keith is impressed with the Digitech AR-1780

Many thanks to SWLing Post contributor, Keith Batari, who shares the following:

I have just got the AR1780 and comparing with others I’ve had especially the PL-660 and PL-880 beats them both. Firstly the SSB does have an annoying mute when running, but the sensitivity and sound quality is fantastic, and that goes for all bands.

The airband sensitivity is also impressive with excellent squelch. Long wave sensitivity is low[…]. Tuning is without the quirks of the PL-880 and great on general coverage bands.

Headphones sound great. I’ve opened mine and the build quality is good with band trimmers and transformers.

If anyone has acquired the circuit diagram could the post it on the Google site.

If you want a radio with a lot of bang for your bucks, then look no further.

Agreed, Keith! The AR-1780 is certainly a value performer. Click here to read our comprehensive review.

I should add that while LW performance is not stellar on the AR-1780, it should suffice for LW listening in Europe, for example. The C. Crane Skywave series does not include longwave, so if you’re looking for a compact travel portable with LW service, the AR-1780 is a better bet.

Rocky is pleased with the CC Skywave SSB

Many thanks to SWLing Post contributor,Rocky Robello (KA7EII), who writes:

Just got my new C. Crane Skywave SSB radio. Same size as my wife’s C. Crane Skywave. AM, FM, WX and Airband all work just as well on the Skywave SSB as the regular Skywave.

So far, I am very satisfied with the SSB reception on the new Skywave SSB. It has one strange quirk – when you press the SSB button, it takes about 3 to 4 seconds to go into SSB mode. Five dashes appear on the display during this wait. After that, it is great.

I enjoy aeronautical communications and I get good reception of San Francisco radio and aircraft flying between the west coast and Hawaii. This is on the built in whip antenna.

Also been tuning through the ham bands and it does a nice job. There is an extra 0.5 KHz bandwidth on SSB mode so it is possible to do some casual CW listening. I like how the “Band” button works on shortwave.

When in AM mode, it cycles through the shortwave broadcasting bands. In the SSB mode, it cycles through the ham radio bands. It even selects LSB on 160-30 meters and USB on 20 through 10.

The only other receiver I have to compare it with (other than my wife’s Skywave) is my 18-year old Sangean ATS-909. The ‘909 is a bit more sensitive on MW AM broadcast band but selectivity is as good or better on the Skywave SSB.

FM sensitivity is great and the FM selectivity of the Skywave SSB beats the ‘909 hands down. Using the built in whip antennas, the Skywave SSB is more sensitive than the ‘909 on shortwave. Haven’t tried the included roll-up antenna on the Skywave SSB yet.

Having a squelch is really nice for monitoring the VHF Airband. One thing the Skywave SSB does that the regular Skywave does not do – you can scan 10 VHF Airband frequencies on the Skywave SSB.

So far, I am very satisfied with this new, tiny shortwave receiver.

Many thanks for sharing your mini review, Rocky!

I’ll also post a CC Skywave SSB review here hopefully by the end of next week–after Thanksgiving travel. My review has been delayed a as my CC Skywave SSB production units have had some QC issues: a very slight internally-generated noise in one and subpar sensitivity in the other.

My pre-production CC Skywave SSB is as Rocky describes: a gem of a compact receiver with sensitivity equal to that of its predecessor and relatively good noise characteristics.

C. Crane engineering is looking into the issues with my early production units and dispatching a replacement. I’ll post an update and review when I receive the replacement.

Dave’s Digitech AR-1780 notes

Many thanks to SWLing Post contributor, David Morton, who comments with assessment of the Digitech AR-1780:

I’ve been using [the Digitech AR-1780] in Australia (southern Tasmania) for about 5 weeks.  In the last 10 or so days, I’ve got a 26m long wire hanging fairly reliably on a N-S bearing.  My history is that I trained as a marine radio operator in the early 1980s, but worked in commercial IT; so no real radio theory and I only just started listening to SW again since being a volunteer in the South Pacific in the mid 1990s.

Now, to this radio.  I quite like it although it has quirks I wish it didn’t have.  In the 1990s, I used a Panasonic RF-B45 and it was rock solid until it died a few years ago.  Every now and then, I try to fix it, but no luck…

Reception here is quite limited and that’s how I discovered the first quirk:  when it scans at SW frequencies it skips. For example it seems to jump from about 9400kHz to 11000kHz.  I also have an old Jaycar AR1747 and it also skips when scanning.  They also skip from about 26100 and restart at 2300kHz.  Whether it’s a design feature, or a fault, I don’t know. Other than that, I think it’s a great radio so far.  The AR1780 lets you type in the frequencies it skips, it just won’t scan them.

Until I start to find some reliable interesting stations (I’ve picked up some Radio NZ Int and BBC World Service), I’m doing a fair bit of listening to WWVH in Hawaii.  Sure listening to the time isn’t as fun, but it serves a purpose when comparing radios side by side.  WWVH broadcasts on 2500, 5000, 10000, 15000, 20000 and 25000 kHZ I think.  I can usually get 15000 subject to propagation at any time.

Until I gave it away, I also had a Jaycar AR1733 and it also skipped; they all probably share a common chip and skip the same frequencies although I haven’t checked closely.  This radio looks identical to the Skywave many of you mention.  The old AR1747 also had a Crane equivalent, and this was helpful as Crane’s manual was much better!

On the first tests with my long wire antenna, the AR1733 had a fairly clear signal, beat the old AR1747 and the AR1780 was the best.  The AR1747 is hard on its D batteries, so may have been handicapped.  As it got dark, I found the signal didn’t change much on 15000 kHz with any radio, but only the AR1780 would find 5000 kHz while scanning (since it skips over 10000 kHZ).  The AR1747 does not have a keypad, so all tuning is by a dial or the scan function.

Oh yes, a hint I’ve learned for Golan.  I gained the habit of punching  then the desired frequency, then .  The precludes the need to type in leading zeroes and trailing zeros.  For example, I get WWVH by  5000 , while 15000 is  15000.  This may go all the way back to the RF-B45, so I’ve had time to acquaint myself.

Next is batteries, the AR1733/Skywave needs 2xAA batteries, the AR1780 takes 4xAA as did the RF-B45.  I haven’t yet run down any batteries in the AR1780 yet, but all my radios with 4 batteries have always worked better than those with only two.  So the extra size is worth it, and the AR-1780 is a fair bit smaller than the old RF-B45.  The AR1747 was an exception, it took 4xAA and 4xD and AA’s were almost a waste of time in it.  But hey, it’s a telephone book size radio with a big speaker; so I keep it plugged in as much as I can.

Anyway, it’s almost 4PM here, we’re on DST so it’s GMT+11 hours.  The bands start opening up soon so I want to get back to the radio.  I’ve still got a lot of work to find the who, what and where of SW broadcasters.  At least logging them is easy these days, when you tune into something, just point the mobile and it and make a movie!

Thanks for your feedback, David!  I also think the AR-1780 is a gem of a little radio.

Click here to read our review of the Digitech AR-1780.

C. Crane CCRadio-EP Pro: a new enhanced version of the EP

Many thanks to SWLing Post contributor, Troy Riedel, who notes that C. Crane has developed an enhanced version of the original CCRadio-EP AM/FM portable.

C. Crane includes the following description on their website:

The new CC Radio-EP PRO is an enhanced version of the original EP. It has the same simple controls and the same high performance with superior selectivity and sensitivity. The portable CCRadio-EP PRO could be considered a super radio; built for ease of use and outstanding long-range AM with our C. Crane patented Twin Coil Ferrite® AM Antenna. FM performance is excellent.

Great for listening to Talk Radio, NPR®, Music, and Sports. The EP PRO has a wide bass and treble adjustment range for defined music and accurate and lively voice reproduction.

A large, 5-inch speaker is combined with a hi-fidelity amplifier and a “Wide/Narrow” enhancement dial to give extra clarity to AM programs. The dial accuracy of the new EP PRO is superior to our original model. Weight: 3.1 lbs. (without batteries). Size: 11.4″ W x 7.3″ H x 2.75″ D. Runs on four optional “D” batteries (not included). AC adapter is included.

C.Crane lists a shipping date of March 30, 2018 or after.

Since I receive so many questions about affordable radios for mediumwave DXing, I’ll certainly review the CCRadio-EP Pro when it’s available. I look forward to evaluating out a radio with such simple controls!

Click here to check the CCRadio-EP Pro on C. Crane’s website.