Looks like Steve Webber’s (KD1JV) first batch of MTRs has sold out in the usual record time.
This rig reverts to the original Altoids form factor and is a dual bander, unlike the plug in band change options in the ATS 3 series rigs.
Hopefully my order went through before they were all gone.
I’ll be building mine as soon as it arrives and it will see immediate action on some hills.
If it’s as good as the ATS4 it will be winner.
I expect he will be doing another run at some time, so if anyone is interested they should keep their eye on the ATS group and Steve’s ordering page at Error 404 - Page Cannot Be Found
Thanks. That one had passed under the 'CWI radar. Looks good. Steve’s
kits are always popular and get good reviews.
An email received from Steve at 1830 this evening, indicated that he had 100+ orders already since ordering opened less than 12 hours ago. The first batch is for 150 kits however there will be another run shortly.
If it’s as good as my ATS4 I’ll be happy
For info the spec is as follows:
The Mountain Topper
A very small, very efficient, two band rig
KD1JV Designs http://kd1jv.qrpradio.com email@example.com
Dual band, 20 M and 40 M typical, 30 M and 80 M possible.
MDS: ~0.2 uV
Small signal band width ~ 500 Hz
Audio output limited to ~ 800 mv p-p
Headphone output, 16 ohms min recommended.
Minimum current (no signal) ~35 ma
2.5 watts @ 9 volt supply typical
Spurs -50 dBc or better
Thanks for the video on the new MTR, glad to work you on the first outing.
I have been looking without success for a design description of the MTR, the receiver selectivity seems quite impressive, it does not appear to receive the whole band as in the Rockmite description by Tom M1EYP ???
Perhaps you can point me and I am sure other interested people in the right direction ??
In reply to G4ISJ:
Great video Pete and glad to be included in your log for the first outing of your MTR. What luck to work someone else with a MTR! Nice to see the top of G/CE-001 as I hope to activate this one myself on 22nd June. That fence is very handy.
I have downloaded the MTR manual. It looks to be a real neat rig, I enjoyed looking at the schematic. I wonder if you had any soldering issues building the MTR ?
I have been looking without success for a design description of the
MTR, the receiver selectivity seems quite impressive, it does not
appear to receive the whole band as in the Rockmite description by Tom
Ken, as you will probably now know, the MTR is a Superhet with a 4 crystal IF filter - It’s a whole different world to the direct conversion RockMite! One disadvantage is that you don’t get to hear the guy calling CQ on the other ‘channel’ at the same time
I had a brief play with my MTR into a dipole the other evening whilst setting the RX band pass filter trimmers - the radio sounds like a modern digital system - there seems to be no background noise, but boy those wanted signals come through nice and clear! I love my RockMites though - long live the RockMite!
In reply to M0CGH:
Had a look at the circuit diagram for the MT, it has a remarkably simple receiver and seems to manage without any RF or IF amplifier stages, there must be quite a bit of low noise gain in the active balanced mixers.
Thanks to all for satisfying my curiosity, I am afraid I have a nostalgic interest in simple receivers as a result of building my first amateur band receiver which was a three valve TRF from a design by F.G.Rayer G3OGR in Practical Wireless some 49 years ago when I was a virtually penniless schoolboy.
Look forward to helping you christen your MT in the near future Colin.